Coring Tools Core Heads Core Barrels... 45

Transcription

1 Catalog 2012

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3 About Company Rock Destruction Drilling Tools PDC Bits Matrix Bits Impregnated Bits Bits for Rotary Steerable Systems Bicentric Bits Special Bits Roller Cone Bits Underreamers Blade Reamers Coring Tools Core Heads Core Barrels Sidetracking and Well Workover Operation Tools Casing Window Milling Kits Casing Section Milling Tools Openhole Sidetracking Kits Pipe Cutters Mills Reamer Stabilizers Punchers Jars Axial Jars Torsional Jars «SHOCK TURN» BHA Components Stabilizers Dampers Bit Protectors String Reciprocators... 73

4 About Company Founded in 1999 as a scientific and production enterprise, BURINTEKH continues as the premier producer of high-quality tools for well drilling and workover operations. Today, BURINTEKH is the leading Russian developer and manufacturer of drilling tools. The total investment amount to production development from 2007 to 2011 is more than $7 million. Our range of new products increases by 30-40% per annum. BURINTEKH main types of activities are: Development and production tools for well drilling and workover operations; Oilfield service utilizing own products. Our ability to provide for our customers needs has resulted in a long list of major Russian and world oil and gas producers and oilfield service companies including: OJSC Surgutneftegaz, OJSC NK Rosneft, OJSC Gazprom, OJSC TNK- BP, LLC Drilling Company Eurasia, CJSC SSK, RUE PA Belorusneft, Royal Dutch Shell, Eriell Corporation s.r.o. and many more. BURINTEKH is dedicated to manufacturing, but also to development of service branch of oil and gas production. We are a member of Association of Oil and Gas Equipment Producers and the Chamber of Coerce and Industry of the Republic of Bashkortostan. We are passionate about our work and are proud to have a highly-qualified team with a long tenure in the oil and gas industry. Our production activity focuses on the scientific component and we have published more than 50 scientific papers for the oil and gas industry since our inception. Our research concentration is on quality and performance improvement of released and newly designed products. Our research includes the study of processes modeling of rock destruction elements interaction with rocks. This research has been conducted on different testbenches, by means of finite element analysis in corresponding integrated prograing environment. Mathematical group of Drilling Tool Design Center conducts computational modeling of bit hydraulic system, thermodynamic processes of drilling tools manufacturing which are based on strength estimations. The most important aspect of our scientific research is studying bottomhole assembly dynamics. We concentrate on the quality of diamond cutters utilizing bench testing and our testing of cutters is conducted in real drilling conditions. 4 burintekh.com

5 Our dedication to research has resulted in production of matrix PDC and impregnated bits by powder metallurgical techniques. This research allowed for the development of initial binders for impregnated tools manufacturing. Our research base is laboratories studying drilling muds and cement slurries. We create and implement new perspective developments in the realm of process liquids, drilling muds and cement slurries through our research. System (EMS) and Occupational Health and Safety Management System (OHSMS). As a strategic partner, BURINTEKH decreases operational costs by means of comprehensive solutions and utilizing progressive scientific research findings. Since 2002, BURINTEKH has Integrated Management System (IMS) according to regulatory documents GOST R ISO (ISO 9001:2008), GOST R ISO (ISO 14001:2004), GOST R (OHSAS 18001:2007). IMS includes: Quality Management System (QMS), Environmental Management burintekh.com 5

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7 ROCK DESTRUCTION DRILLING TOOLS

8 ROCK DESTRUCTION DRILLING TOOLS Design and development of competitive rock destruction drilling tools are provided by highly qualified specialists. Experienced designers work on creating tools for well drilling and workover operations across the entire territory of Russian Federation and abroad. With our latest software, which allows modeling the process of rock destruction and bit hydraulics, our specialists have the ability to set all necessary characteristics depending on technological and geological drilling conditions. BURINTEKH designs and produces the following rock destruction drilling tools: Steel and Matrix PDC Bits; Impregnated Bits; Milled Tooth and Tungsten Carbide Insert Roller Cone Bits; Special Bits for drilling cement and sand plugs, liner equipment, low abrasive soft formations and reaming wellbore; Bicentric Bits for reaming while drilling; Underreamers for reaming any intervals of a borehole and reaming while drilling as part of BHA comprising pilot drill bit; Blade Reamers for reaming previously drilled intervals and reaming while drilling as part of BHA comprising pilot drill bit. 8 burintekh.com

9 PDC Bits Nomenclature and options BIT 215,9 ВТ 613 YBM.02 Bit diameter Bit series Quantity of blades Dominant size of cutters Additional options Design features Conventional designation of PDC Bits produced by BURINTEKH, Ltd. Cutter sizes Bit element Main cutting structure Second row of cutting structure Literal character designation T Y E O C High wear-resistant cutters Highest abrasion-resistant cutters Description Additional row of PDC cutting structure placed behind main one Additional tungsten carbide inserts with impregnated diamonds placed behind main cutting structure Additional stabilizing inserts placed behind main cutting structure B Backreaming PDC cutters on gauge back taper Gauge A Gauge reinforced with thermally stable diamond inserts X Gauge protected by tungsten carbide inserts with impregnated diamonds Hydraulics H Unchangeable nozzles Body M Matrix body Thread P Box connection burintekh.com 9

10 ROCK DESTRUCTION DRILLING TOOLS PDC Bit application area, Extending opportunities Type of Bit Formations Hardness 4-blades 5-blades 6-blades with code.3xx with code E.3XX 7-blades 8-blades with code E.4XX with code E.5XX Clay, sand, uncemented sandstone, clayey siltstone S Claystone, siltstone, sandstone, loose limestone, rock salt SM Laminated mudstone, siltstone, limestone, marl, dolomite, sandstone M Limestone, dolomite, marl, siltstone, sandstone MH Limestone, dolomite, marl, sandstone H Basic design bit application area Extended bit application area by means of T and Y options 10 burintekh.com

11 Main cutting structure Gauge High wear-resistant cutters Backreaming PDC cutters on gauge back taper Highest abrasion-resistant cutters Gauge protected by tungsten carbide inserts with impregnated diamonds Second row of cutting structure Additional row of PDC cutting structure placed behind main one Gauge reinforced with thermally stable diamond inserts Hydraulics Additional stabilizing inserts placed behind main cutting structure Unchangeable nozzles Additional tungsten carbide inserts with impregnated diamonds placed behind main cutting structure Body Matrix body Thread Box connection burintekh.com 11

12 ROCK DESTRUCTION DRILLING TOOLS Soft formation PDC Bits This bit series is designed for drilling soft formations of I-IV category of hardness. Series features Due to maximum diameter of cutters and their aggressive arrangement drilling is carried out at high ROP. Specially designed bit profile provides uniform wear and the most comprehensive tool run. Optimally designed junk slot area prevents from creation of stagnation zones and accumulation of drilled cuttings. Flushing nozzles directed in such a way that bit cutting structure and maximally loaded zones are permanently flushed. Mud flow direction is chosen taking into account optimal correlation to volume of drilled rocks. Manufacturing of different tool sizes (81 444,5 / ½ ). Optimally designed junk slot area prevents from creation of stagnation zones and accumulation of drilled cuttings. Main mud flow is directed to the most loaded zones allowing timely clean out bit cutting structure. 12 burintekh.com

13 As a result of using BIT 215,9 B 313 CH penetration rate increased by 20% Location: Orenburg region, Russia Type: BIT 215,9 B 313 CH IADC: S223 Formations: Clay, limestone Development objective: preservation of durability while drilling shallow wells at high penetration rate Benefit: 20% increase in ROP relative to bits with larger quantity of blades ROP, m/h As a result of using BIT 295,3 BT 419 cost per meter decreased by 18% Location: Western Siberia, Russia Type: BIT 295,3 BT 419 IADC: S123 Formations: Clay, sandstone, siltstone Development objective: drilling at high ROP and maintaining excellent steerability. Used with high-speed motors Benefit: Cost per meter decreased by 18%. ROP growth of 16% was observed on Priobskoe field. ROP increased by 40% on the Yamal-Nenets Autonomous District fields burintekh.com 13

14 ROCK DESTRUCTION DRILLING TOOLS Soft to medium formation PDC Bits This bit series is designed for drilling soft interbedded with medium formations of II-V category of hardness. Series features Analysis of multiple bit runs allowed designers to develop a bit with optimal quantity of cutters on minimum quantity of blades. Aggressive cutting structure provides maximum ROP. Due to specially developed bit cleaning method (the effectiveness of which has been repeatedly proven in practice) enhanced hydraulics coping with large volume of drilled cuttings was created for applications where balling is present. In spite of low blade quantity designers preserved steerability without speed loss which is paramount while directional drilling. Manufacturing of different tool sizes (81 444,5 / ½ ). All mentioned features were proven in field runs, and have become market leading bits in their areas. Specially designed back part of bit allows avoiding overpulls while pulling out of the hole. Optimally designed junk slot area prevents from creation of stagnation zones and accumulation of drilled cuttings. 14 burintekh.com

15 As a result of using BIT 220,7 BT 416 CB penetration rate increased by 30% Location: Western Siberia, Russia Type: BIT 220,7 BT 416 CB IADC: S222 Formations: Claystone, sandstone Development objective: drilling at high ROP and maintaining perfect steerability Benefit: ROP increased by 30%. Due to good performances this type of bit is used instead of earlier ones ROP, m/h As a result of using BIT 295,3 B 519 C cost per meter decreased Location: Western Siberia, Russia Type: BIT 295,3 B 519 C IADC: S223 Formations: Claystone, sandstone Development objective: drilling at high penetration rate. Stability behavior of bit on the bottomhole due to radial movement stabilization Benefit: Decrease of gauge cutter chipping and reducing bit balling while drilling burintekh.com 15

16 ROCK DESTRUCTION DRILLING TOOLS Medium formation PDC Bits This bit series is designed for drilling medium formations of III- VI category of hardness. Series features More compact overlapping cutter arrangement provides high bit durability. Specially designed cutting structure, taking into account selection of optimum cutting angles, provides high penetration rate. Equipping bit with the set of additional options like stabilizing inserts promotes smoother cutting by limiting axial and radial movements. Bits of this series are designed for directional wells. A key characteristic such as steerability provides high accuracy of well drilling into the target zone. Manufacturing of different tool sizes (81 444,5 / ½ ). Unique selected cutting angle correlations provide maximum speeds and high durability. Steerability is achieved due to controlled torque growth on bit affecting on toolface orientation while directional drilling. 16 burintekh.com

17 As a result of using BIT 215,9 BT total meterage per bit increased on the Western Siberia fields Location: Western Siberia, Russia Type: BIT 215,9 BT IADC: S333 Formations: Sandstone, siltstone, claystone Development objective: increasing cutting structure durability and maintaining perfect steerability Benefit: Increasing total meterage per bit on the Western Siberia fields from 4,000 to 6,000 m, from 8,000 to 10,000 m (at observing recoended drilling regimes) As a result of using BIT 220,7 BT 613 CB ROP in top intervals increased Location: Western Siberia, Russia Type: BIT 220,7 BT 613 CB IADC: S333 Formations: Sandstone, siltstone, claystone Development objective: increasing cutting structure durability, ROP and maintaining perfect steerability Benefit: ROP in top intervals increased. Total meterage per bit increased by 1,500-2,000 m (at observing recoended drilling practice) ROP, m/h burintekh.com 17

18 ROCK DESTRUCTION DRILLING TOOLS Medium hard formation PDC Bits This bit series is designed for drilling medium interbedded with hard formations of IV-VI category of hardness. Series features More compact overlapping cutter arrangement provides high durability. Specially designed cutting structure, taking into account selection of optimum cutting angles, provides high penetration rate. Spiral shape of blades provides stable bit behavior while directional drilling. Most loaded zones are calculated on internal CAD software DOLOTO that provides uniform distribution of load and minimizes disbalance of forces. Equipping bit with the set of additional options like stabilizing inserts promotes smoother cutting by limiting axial and radial movements. Set of design solutions implemented in bits of this series allows achieving maximum ROP, high total meterage and excellent steerability while drilling both vertical and directional wells. Manufacturing of different tool sizes (81 444,5 / ½ ). Calculations on internal software system allow to determine and exclude stress zones and minimize disbalance of forces. Compact overlapping cutter arrangement decreases wear, maintains high ROP and steerability. 18 burintekh.com

19 As a result of using BIT 215,9 B 616 ECAM.382 total meterage per bit increased Location: Orenburg region and Eastern Siberia, Russia Type: BIT 215,9 B 616 ECAM.382 IADC: S423 Formations: Limestone, dolomite, siltstone Development objective: drilling with increased radial and axial vibration resistance Benefit: Total meterage per bit increased by 30% relative to earlier used designs As a result of using BIT 311,2 BT 619 CB.382 vibration resistance increased Location: United Arab Emirates Type: BIT 311,2 BT 619 CB.382 IADC: S322 Formations: Claystone, dolomite, siltstone Development objective: drilling with increased radial and axial vibration resistance Benefit: Earlier used bit had dull grading code: 2-6-CT-A-X-IN-ER-TD. New design bit is rerunable: 0-0-CT,WT-S-X-IN-ER-TD burintekh.com 19

20 ROCK DESTRUCTION DRILLING TOOLS Hard formation PDC Bits This bit series is specially designed for drilling hard formations of IV-VII category of hardness. Series features Highest shock- and abrasion-resistant cutters are used in production of these bits. Specially designed bit profile and optimally selected quantity of blades provide maximum overlap of cutters protecting bit from early wear. Thoroughly calculated bit cutting structure on internal software system allowed to minimize disbalance of forces. Spiral shape of blades is used to increase stability behavior of bit on the bottomhole. Manufacturing of different tool sizes (81 444,5 / ½ ). Active gauge protection allows to drill considerable intervals without diameter loss. Thoughtful bit design made it possible to optimally arrange flushing channels providing maximum cutter cooling. Set of design solutions implemented in these bits allows achieving maximum values of penetration rate, total meterage and excellent steerability while drilling both vertical and directional wells. Use of increased shock resistant cutters increase life of tool thus providing higher penetration rate by means of preserving cutting structure of bit. Spiral shape of blades promotes more stable bit performance and allows to place more cutters on bit. 20 burintekh.com

21 As a result of using BIT 215,9 B 716 CM.382 penetration rate increased by 30% Location: Orenburg region, Russia Type: BIT 215,9 B 716 CM.382 IADC: S422 Formations: Limestone, dolomite Development objective: drilling with increased vibration resistance and eddying prevention Benefit: ROP increased by 30% relative to earlier used designs of bits As a result of using BIT 215,9 B 713 CB vibration resistance increased Location: Eastern Siberia, Russia Type: BIT 215,9 B 713 CB IADC: S432 Formations: Claystone, dolomite, siltstone Development objective: Drilling with increased axial and radial vibration resistance Benefit: High penetration rate through complex drilling intervals while maintaining durability burintekh.com 21

22 ROCK DESTRUCTION DRILLING TOOLS Matrix Bits Matrix Bits are optimal solution for well drilling where use of ordinary steel bits lead to their rapid erosive wear. Manufacturing a matrix bit body from a composite material based on tungsten carbide allows bits to drill in high abrasive formations using weighted drilling mud. Specially selected material compositions provide high reliability and durability for continuous bit runs. Improved designing and manufacturing technologies make it possible to produce a wide range of drilling tools. Matrix body bit Specially developed unique manufacturing technology guarantees high quality and reliable production tools 22 burintekh.com

23 Impregnated Bits Our impregnated rock destruction tools are capable of drilling formations up to XI category of hardness and XII category of abrasiveness. Bits have composite layers made up of specially selected mixtures of diamond powder of different sizes and alloy. Mixture composition is defined individually depending on drilling conditions. This type of tool is effective in drilling with high-speed hydraulic motors and turbines. High rotational speed allows maximum rock destruction. Specially designed bit profile allows use of large volume of diamond material. This feature increases durability of gauge and front parts and protects gauge in abrasive formations. BIT 215,9 D A IADC: М842 PURPOSE Bit is designed for drilling at high ROP in hard and strong formations of VII-XI categories of hardness and up to XII category of abrasiveness. DESCRIPTION Blades of bit are reinforced with specially selected mixture of high quality diamonds, which allows increasing bit durability at high ROP. Center of bit is equipped with PDC cutters. Bit cutting structure made up of hot-pressed inserts with impregnated diamonds allows achieving higher ROP. TECHNICAL SPECIFICATIONS Outside diameter, / inch 215,9 / 8 ½ Total quantity of hot-pressed inserts, pcs 81 Total quantity of 13 PDC cutters, pcs 5 Quantity of sectors 15 Diameter, / Quantity of flushing holes 12 / 9 Total flow area, 2 / sq. inch 1017 / Gauge length, / inch 105 / 4.13 Connecting thread (GOST / API) Z-117 / 4 ½ Reg Height, / inch 450 / Height without thread, / inch 350 / Weight, kg / lb 90 / BIT 215,9 D А Outside diameter Diamond cutting structure Quantity of sectors Quantity of flushing holes Impregnated bit Thermally stable diamond inserts burintekh.com 23

24 ROCK DESTRUCTION DRILLING TOOLS Bits for Rotary Steerable Systems Appearance of Rotary Steerable Systems (RSS) allowed changing of traditional technology and increasing of techno-economic performance of well drilling. As a result of use BIT 219,1 B 519 YCB bit durability for drilling 3 sections of well (5,000 m) was provided One of the components of successfully carrying out drilling operations with use of RSS is a competent approach to selection of drilling tools capable to realize all the potential of this system. Special attention should be given in accounting for two main types of RSS according to method of bit displacement control relative to well axis: 1. Push the bit radial displacement of whole assembly or its major part with respect to well axis; 2. Point the bit positioning of bit is achieved by means of tilting drive shaft with respect to BHA. Two different RSS types require widely different bit designs. Lateral and axial loads are accounted for in the cutting structure s gauge length and its aggressiveness. Cutting structure durability must correspond to RSS requirements. Location: Eastern Siberia, Russia Type: BIT 219,1 B 519 YCB IADC: S323 Formations: Sandstone, siltstone, claystone Development objective: drilling of complex-profile wells in RSS BHA composition Benefit: Bit durability for drilling 3 sections (5,000 m) BURINTEKH produces bits for both types of RSS. Bit performance data and drilling companies responses allow us to proudly state that our bits are competitive with world manufacturers bits and surpass them in some rates. BIT 219,1 B 519 YCB burintekh.com

25 Bicentric Bits Bicentric Bits allow drilling wells of bigger diameter than it is usually possible with diameter of earlier inserted casing string. Design features of bicentric bits provide good steerability, high ROP and qualitative hole enlargement. Special attention is paid to the performance of these bits. We have gained extensive experience, protecting designs by patents and offer bicentric bits which satisfy customer requirements. BIT 120,6/132/106 B 510 H-02 IADC: S342 PURPOSE Bit is designed for simultaneous drilling and reaming wellbore from to 132 in soft interbedded with medium formations. TECHNICAL SPECIFICATIONS Outside diameter, / inch 120,6 / 4 ¾ Reaming diameter, / inch 132 / Maximal tool diameter, / inch 106 / Cutter diameter, / inch 10 / Total quantity of cutters, pcs ( / inch) 23 (10 / 0.394); 1 (13 / 0.512) Quantity of blades on reamer 5 Quantity of nozzles 5 Connecting thread (GOST / API) Z-76 / 2 ⅞ Reg Height, / inch 365 / Height without thread, / inch 275 / Weight, kg / lb 17 / BIT 120,6/132/106 B 510 Н-02 Outside diameter Reaming diameter Maximal diameter of above bit tool Manufacturer code Quantity of blades on reamer Dominant size of cutters Unchangeable nozzles Design number burintekh.com 25

26 ROCK DESTRUCTION DRILLING TOOLS Special Bits BC type bits Bits are equipped with tungsten carbide teeth. Small and medium diameter ( ) bits are designed for drilling liner equipment, cement and sand plugs and other operations in cased hole. Bits of big diameter ( ) are ideally suited for drilling sections for conductor and surface casing which are represented by low abrasive soft and medium formations. BC-93 BC-295,3 P Sp BP type bits Bits are designed for wiper trips and reaming in low abrasive soft and medium formations at high ROP. Body profile and cutting structure prevent from accidental sidetracking in abnormal bore. Bits are equipped with tungsten carbide teeth and PDC cutters. ВР-142,9 Р 26 burintekh.com

27 Roller Cone Bits As the competition in the oilfield increases BURINTEKH, as a market leader, aims to satisfy all our customers requirements. Currently we are developing a new product-line Roller Cone Bits. In 2010 roller cone bit manufacturing facility was acquired in USA having more than 37 year experience of creating high quality rock destruction tools, smoothly running and permanently upgradable manufacturing technologies, which produce API/ISO certified production for internal and external (including Russian) markets. In 2012 roller cone bit manufacturing was organized in Ufa city. Big work was done, up-to-date equipment was purchased, specialists with wide experience in roller cone bit manufacturing were staffed who are regularly sent to USA for training and qualification upgrade. American professionals permanently present at manufacturing, control the quality of operations at each production phase. We have a modernized researching laboratory and test-bench, which help to control and improve quality of production. Currently we produce milled tooth and tungsten carbide insert tricone bits of the unibody and sectional types meeting demands of most exacting consumers concerning quality, effectiveness and reliability. BURINTEKH USA headquarters burintekh.com 27

28 ROCK DESTRUCTION DRILLING TOOLS Nomenclature and options 215,9 Z 45 RD1 SD Bit size Manufacturer code Code of hardness Additional options XXX Z Bit size Designation of all BURINTEKH, Ltd. roller cone bits 45 Code for all bits (increasing with rise of drilling formation hardness) Option designation of tungsten carbide inserts, gauge, shirttail and arm rear flank protection: K V M R D RD RD1 RD2 DRD J S SD T Conical Inserts Vectored Inserts Tough Carbide Grade Reaming Gauge Row Diamond Protected Gauge/Heel Row Diamond Protected Reaming Gauge Row (25% diamond) Diamond Protected Reaming Gauge Row (50% diamond) Diamond Protected Reaming Gauge Row (100% diamond) 100% diamond Gauge and 25% diamond Reaming Gauge Center Jet Leg Inserts Diamond Protected Leg Inserts Torch Applied Cone Hardfacing 28 burintekh.com

29 Main cutting structure Shirttail К Conical insert Conical and spherical shapes increase bending resistance of insert. Recoended for hard and very hard formations S Shirttail hardfacing and leg equipped with increased quantity of tungsten carbide inserts M Tough carbide grade. Tungsten carbide material with unique correlation of elasticity and wear resistance SD Additional to S option. Diamond protected leg inserts. Improve gauge protection Reaming gauge Hydraulics D Diamond protected heel row (100%). Increases bit durability in abrasive formations, prevents diameter loss J Center jet. Improves bottomhole cleaning. Recoended for 393,7 (15 ½ ) and larger bits R Additional reaming gauge row. Protects shirttail and reduces thermal effect on sealing, thereby increasing bearing life RD Diamond protected reaming gauge row (25%) RD1 Diamond protected reaming gauge row (50%) RD2 Diamond protected reaming gauge row (100%) Other T Torch applied cone hardfacing. Protects cone material from washout. Recoended for use with high sand content in drilling mud burintekh.com 29

30 ROCK DESTRUCTION DRILLING TOOLS Bit bearing Patented bearing configuration maximizes load capacity. Proprietary high alloy steel with special heat treatment allows increasing metal strength. Bearings are designed for maximal size and load capacity. All materials are continually being refined and improved. Since 2012, all our roller cone bits have new strengthened sealing material of increased durability. Bearing sleeves and thrust washers made up of extremely hard material, covered with silver, decrease friction coefficient and increase bearing life. Labyrinth sealing with special tortuous path prevents penetration of abrasives into the bearing for increased life. Special geometry of reaming gauge surface prevents cuttings from accumulating. 30 burintekh.com

31 Lubricating system Special grease distribution and circulation system provides effective heat transfer from bearing. Proprietary synthetic grease combined with compatible seal material increase seal life. The function of the pressure compensating system is to equalize the pressure inside the bearing section with downhole annular pressure. Leakage test of all bit sections guarantees hundred-percent reliability of lubricating system. Gauge All roller cone bits have full set of options for directional drilling: Enhanced gauge, reinforced with double quantity of tungsten carbide inserts, perfectly protects bit while high dogleg severity drilling and allows maintaining nominal well diameter; Shirttail hardfacing protects seals from early wear; Additional reaming gauge rows patented technology protecting seals from overheating due to friction between bit and wellbore. burintekh.com 31

32 Bit size chart* Size (inch) 3 7 /8 4 1 /2 4 5 /8 4 3 /4 4 7 /8 5 5 /8 5 3 / /8 6 1 /4 7 7 /8 8 3 /8 8 1 /2 8 5 /8 8 3 /4 Size () 98,4 114,3 117,5 120,6 123,8 142, ,4 155,6 158, ,7 215,9 219,1 222,3 Type Z1RS Z2RS Z05RS Z07RS Z10RS Z12RS Z15RS Z18RS Z20RS Z21RS Z22RS Z23RS Z25RS Z27KRS Z28RS Z29KRS Z30RS Z34RS Z37RS Z37KRS Z39RS Z39KRS Z40RS Z45RS Z47KRS Z47KRSJ Z50RS Z57KRS Z59KRS Z67KRS Z70KRS Z80KRS Z95KS Z95KRS Z67KRSD * Bits can be designed and manufactured of different tool sizes. 32 burintekh.com

33 9 7 / / / / / / / / , ,9 295,3 311,1 374,6 393,7 406,4 444, ,8 584,2 660,4 711,2 812,8 914,4 burintekh.com 33

34 BURINTEKH Bits Comparison Table IADC Code Milled Tooth Bit Series Formation Type 4. Sealed Roller Bearing 5. Sealed Roller Bearing Gauge Protected BUSA HCC RTC SEC SII BUSA HCC RTC SEC SII Milled Tooth 1 2 Soft, Low-Compressive Strength Medium to Medium Hard, High- Compressive Strength 1 Z1 GTX-1 SDS Z1 2 Z2 Z2 3 Z3 GTX3 MGG Z3 GTX-G1, MAX- GT1, MXL-1, MXL-1V GTX-G3, MAX- GT3 T11, EMS11G, ETS11G T13, EMS13G, ETS13G XT1, XT1S, XL1N XT3, EBXT3 XR+, GSSH+, TCTi+ GGH+, MSDGH 1 XT4, XT4S SVH Hard, Semi-Abrasive IADC Code Milled Tooth Bit Series Formation Type 6. Sealed Friction Bearing 7. Sealed Friction Bearing Gauge Protected BUSA HCC RTC SEC SII BUSA HCC RTC SEC SII Milled Tooth 1 2 Soft, Low-Compressive Strength Medium to Medium Hard, High- Compressive Strength 1 Z1 HP11 XS1, XSC1 FDS Z1 GT-1, MX-1, MXL-1, MXL-1V, STR-1, STX-1 TC10, TC11, SL11, TD11, D11 2 Z2 HP12 XSC2 FDT Z2 SL12, HP12 XSC1, XLC1, EBXS1, EBXSC1, EBXLC 3 Z3 HP13 Z3 MX-3 HP13G, D13 XS3, XL3 XR+, FDS+, TCTi+ MFDGH, FDGH 1 ATJ-4 M44NF ATJ-G4 HP21G XS4, XL3 GFVH, FVH Hard, Semi-Abrasive 1 2 H77F 3 4 ATJ-G8 34 burintekh.com

35 IADC Code TCI Bit Series Formation Type 5. Sealed Roller Bearing & Gauge Protection 7. Sealed Friction Bearing & Gauge Protection BUSA HCC RTC SEC SII BUSA HCC RTC SEC SII 1 Z05 GTX-00, GTX-03, GX-00, GX- 03, GX-00, GX-03 EMS41H, T41 EBXT00-05, XT00-05, SS80, XT00-05, SS80 GO38V, GO4BV Z05 GT-00, GT-03, H-03, STR-03, GX-00, GX-03 EBXS00-05, XS00- TD41H, TD41, 05, ERA03, SS80F, TD41A, TD41A ERA03, SS80F FH05V, GF05BV, FHG05V, FHG05V 4 Soft 2 Z10 GTX-03C EMS42H, T42 3 Z12, Z15 4 Z18 GTX-09, GTX-09H, GTX-11, GTX-11H, GX-11, GX11C EMS44H, EMS44A EBXT06-09, XT00-09, XT08, SS81, ERA07 EBXT(D)14-17, XT(D)14-17 MD5S, GO5BV GS10BV, MGS10, 10GM GS17BV, 15M Z10 Z12, Z15 Z18 STR-05C, HX- 05C GT-09, GT-09C, STR-09, STX- 09, STX-09C, H-09C, HX-09 GX-11, GX-11C GT-18, GT-18C, STR-18, H-18, H-18C, GX-18, GX18C TD42H SL43H, TD43, TD43A, TD43H, D43, HP43A, HP43H TD44, TD44H, TD44X, D44, HP44H EBXS06-09, XS06-09, S81F, ERA07 FEBXL(D)12, EBXS(D)10-13, SS82FD, ERA13, ERA14, HZSD82F EBXS(D)14-17, ERA17, S83F, XS(D)14-17, SS83FD FHG06V, FHG08BV FH08V, XR10/T, GF10, GFH11Y, F12Y, 12MF F12V, FH158V, FH16V, XR15/T, GF15, GF18, GF15, GF18 1 Z20, Z20K, Z21, Z22, Z23, Z23K GTX-20, GTX-20G, GTX-22, GX-20, GX- 22, GX-22S EMS51H, EMS51A EBXT(D) 18-23, XT(D) JS, 20M Z20, Z20K, Z21, Z22, Z23, Z23K GT-20, GT-20S, STR-20, H-20, HX-20, GX-20, GX-22, GX-22S, GX-23 SL51H, TD51, TD51A, D51, TD51H, HP51, HP51A, HP51X FEBXL20, EBXS18-23, XS18-23, S84F, SS84F, ERA22, ERA18, RA22 FH16V, FH18V, GF20, FH20V, XR20, FH23V, F2HV, XR20T, XR26W Tungsten Carbide 5 Medium Soft 2 Z25, Z27K, Z28, Z29 GTX-20C, GX-20, GX- 22, GX20C, GX22S, GX-23 3 Z30 GX-30 4 Z30K, Z34, Z37K, Z39, Z39K GTX-30C, GTX033, GX-30, GX35, HR- 38CH EMS52H, T52 EMS53, ET53, ETS53A, EMS53A T54 EBXT(D) 24-27, XT(D) 28-33, SS86 EBXT(D) 28-33, SS86 EBXT(D) 34-39, XT(D) 34-39, SS88C EJS, M3S Z25, Z27K, Z28, Z29 Z30 Z30K, Z34, Z37K, Z39, Z39K GT-20C, GT-28, H-28, H-20C, HX-28, GX-20C, GX-28, GX-28C STR-30, STX- 30C, STX-35, GT-30, H-30, HX-30 GT-30C, STR- 30C, STR-35C, HR-38C, HR-35, GX-30C, GX- 30C, GX-35, HR-38CH TD52, TD52A, TD52H, TD521, TD52X, HP52, HP52X SL53(A), TD53(A), D53, HP53, JA53 TD54A, TD54X, TD54 EBXS9D)24-27, XS(D)24-27, S85F, ERA25 EBXS28-33, S86F, ERA33, SS86F EBXS(D)34-39, XS(D)34-39,S88F F25, KR25W, FH26YN, F27IV, FH28V, XR20TY F3HV, FH30V, FH31V, XR30/T, XR32, GF30 F35V, FH35V, F37HY, F38Y, XR30TY, XR30Y 6 Medium 1 Z40, Z45 ETS61A 2 Z47K GT-40C EMS62 EBXT(D) 40-45, XT(D) 40-45, M84 EBXT(D) 46-51, MM88 4JS Z40, Z45 Z47K 3 Z57K M57DOD Z57K 4 Z67K Z67K STR-40, HR-40, HR-44, HR- 44G, STX-40 STR-40C, STR-44C, STX- 44C, HR-40C, GX-44C STR-50, STX- 50, HR-50, HR- 55, HR-55H, HR-55R HR-60, HR-66, HR-68, STX-60 EHP61, HP61, SL61, TD61 HP62, SP62, TD62, JA62 EHP63, HP63, SL63, TD63 HP64, TD64 EBXS40-45, M84F, ERAD44 EBXS46-51, M85F, M86, M89, M84CF EBXS52-58, M89F, HZM89, XS52-58 XS61/63/65 /67/69 F4, F4H, FH43Y, FH45, XR4C, GF40, GH40, GH45Y FH45, FH50, F5, F47HY, MF5, XR40Y, GF45Y FH50, F5, XR50, F59Y, XR50Y, F57Y F59Y, F67Y, F68Y 7 8 Hard Xtra Hard 1 3 Z70K STR-70, STX- 70, HR-70 HP73, SL73 4 Z80K HP74, TD74 1 HR-80, HR-88, STX-80, STX- 88, STR-80 2 HR-89 3 Z90K, Z95K HR-90, HR-99, STX-90, STX- 99, HSTR-90, HR-95 HP81, SL81 HP83, SL83, TD83 EBXS71/73/75, XS71/73/75 EBXS(D)77/ 79/81, XS(D)77/79/81 XS(D)83/ 85/87/89 EBXS(D)91/93, XS(D)91/93, H89F EBXS(D)95/97, XS(D)95/97 EBXS(D)99, XS(D)99, H100F FH70, XR68Y, XR70, XR70HY GFH80Y, F8, F80Y, XR80Y F85Y, F90Y, XR90Y burintekh.com 35

36 ROCK DESTRUCTION DRILLING TOOLS Roller cone bit nozzles Bit diameter inch Nozzle series Fixation type 3 ¾ nail 6 1/8 3 ¾ snap ring 7 7/ snap ring Recoended torque values for roller cone bits thread joints Connecting thread Bit diameter Recoended torque values API GOST Inch ft lbf kn m 2 3/8 Reg Z-66 3 ½ 4 ½ ,000 3, /8 Reg Z / ,500 5, ½ Reg Z /8 7 3/ ,000 9, ½ Reg Z / ,000 16, /8 Reg Z ½ ,000 32, /8 Reg Z ¾ ,000 40, /8 Reg Z ,500 78, /8 Reg Z ½ ,000 60, /8 reg Z , , burintekh.com

37 Underreamers RR RR type underreamers are designed for enlarging any interval of wellbore (for liners, profile shutter, repair and insulation work intervals) in soft and medium hard formations. RR H type underreamers are designed for reaming while drilling as a part of BHA comprising pilot drill bit or previously drilled interval. RR Sp type underreamers are designed for carrying out special operations in openhole intended to form a cavity within a wellbore for further intentional sidetracking from original hole. Expansion of blades, equiped with high quality PDC cutters, into operating position is provided by the effect of differential fluid pressure between flowbore and wellbore annulus. Delivery set of all types of underreamers includes back pressure valve which prevents tool from sludging during round-trip operations and interchangeable blades easily replaceable in rig conditions, significantly reducing repair and maintenance costs. RR technical specifications Tool series Body diameter, Centralizer diameter, Opening diameter, Overall length, Connection thread GOST RR Z /8 Reg RR Z-86 NC-31 RR Z-86 NC-31 RR Z-86 NC-31 RR Z-86 NC-31 RR Z-86 NC-31 RR Z-86 NC-31 RR Z-86 NC-31 RR Z-86 NC-31 RR Z-86 NC-31 RR Z-86 NC-31 RR Z-86 NC-31 RR Z-102 NC-38 RR Z-102 NC-38 RR Z-102 NC-38 RR , , Z-102 NC-38 RR , , Z-102 NC-38 RR Z-102 NC-38 RR Z-102 NC-38 RR Z-102 NC-38 RR Z ½ FH RR Z ½ FH RR Z ½ FH API burintekh.com 37

38 ROCK DESTRUCTION DRILLING TOOLS RR H technical specifications Tool series Body diameter, Centralizer diameter, Opening diameter, Overall length, Connection thread GOST API RR Н Z-86 NC-31 RR Н Z-86 NC-31 RR Н Z-86 NC-31 RR Н Z-102 NC-38 RR Н Z-133 NC-50 RR Н Z ½ FH RR Н Z ½ FH RR Sp technical specifications Tool series Body diameter, Centralizer diameter, Opening diameter, Overall length, Connection thread GOST API RR Sp Z /8 Reg RR Sp Z-86 NC-31 RR Sp Z-86 NC burintekh.com

39 Blade Reamers RL RL type blade reamers are designed for drilling wells with pilot bit or enlarging previously drilled intervals. Service life of reamers is equal to service life of PDC bits in same conditions, herewith enlarging is carried out at high ROP. Reamers blades, equipped with PDC cutting structure, have backreaming cutters and reinforced gauge protection. Delivery set of reamers includes interchangeable blades easily replaceable in rig conditions, significantly reducing repair and maintenance costs. For providing effective cuttings removal reamers are equipped with changeable wear resistant nozzles. For enlarging previously drilled intervals reamer can be completed with extending sub and PZU (special tool preventing from accidental sidetracking) equipped with jet nozzles. Technical specifications Tool series Body diameter, Minimum pilot hole (pilot bit) diameter, PZU type Opening diameter, Overall length, Top/Bottom box connection GOST API RL , , ,9 550 Z-102 / Z-88 NC-38 / 3 1 /2 Reg RL , , ,3 780 Z-117 / Z /2 Reg / 4 1 /2 Reg RL , Z-117 / Z /2 Reg / 4 1 /2 Reg RL , RL , RL , , ,5 980 RL , RL , RL , RL , Z-147 / Z-152 Z-171 / Z-152 Z-171 / Z-171 Z-147 / Z-152 Z-171 / Z-152 Z-171 / Z-171 Z-147 / Z-152 Z-171 / Z-152 Z-171 / Z-171 Z-147 / Z-152 Z-171 / Z-152 Z-171 / Z-171 Z-147 / Z-152 Z-171 / Z-152 Z-171 / Z-171 Z-147 / Z-152 Z-171 / Z-152 Z-171 / Z-171 Z-147 / Z-152 Z-171 / Z-152 Z-171 / Z /2 FH / 6 5 Reg 6 5/8FH / 6 5 /8Reg 6 5 /8 FH / 6 5 /8 FH 5 1 /2 FH / 6 5 /8Reg 6 5 /8 FH / 6 5 /8Reg 6 5 /8 FH / 6 5 /8 FH 5 1 /2 FH / 6 5 /8Reg 6 5 /8 FH / 6 5 /8Reg 6 5 /8 FH / 6 5 /8 FH 5 1 /2 FH / 6 5 /8Reg 6 5 /8 FH / 6 5 /8Reg 6 5 /8 FH / 6 5 /8 FH 5 1 /2 FH / 6 5 /8Reg 6 5 /8 FH / 6 5 /8Reg 6 5 /8 FH / 6 5 /8 FH 5 1 /2 FH / 6 5 /8Reg 6 5 /8 FH / 6 5 /8Reg 6 5 /8 FH / 6 5 /8 FH 5 1 /2 FH / 6 5 /8Reg 6 5 /8 FH / 6 5 /8Reg 6 5 /8 FH / 6 5 /8 FH RL , , , Z-171 / Z /8 FH / 6 5 /8 FH RL , Z-171 / Z /8 FH / 6 5 /8 FH burintekh.com 39

40

41 CORING TOOLS

42 CORING TOOLS BURINTEKH develops and produces necessary tools for high quality coring of 52, 80 and 100 in diameter, including core heads for coring in formations of I-X category of hardness and I-XII category of abrasiveness and multi-purpose core barrels of different lengths. The use of BURINTEKH core heads and core barrels together allows carrying out of coring activity with maximum effectiveness and high techno-economical performances. Core Heads BURINTEKH develops and produces steel and matrix body core heads, equipped with PDC cutters, thermally stable polycrystalline (TSP), impregnated diamonds or their combination. Core heads equipped with PDC and TSP cutters are designed for coring in unconsolidated, soft, medium and hard formations providing maximum core recovery at high penetration rates. Specially developed hydraulics prevents core washout. Impregnated core heads are designed for coring in strong formation with maximum core recovery. Due to specially selected proportion of diamond sizes, core head provides high rate of penetration. Core heads are being designed depending on concrete geological-technical data in accordance with customer conditions and priorities for any existing in the world core barrels. 212,7/101,6 B 913 ЕС.22 Core head diameter Core diameter Manufacture code Quantity of blades Dominant size of cutters Additional options Design features Conventional designation of PDC Core Heads produced by BURINTEKH, Ltd. BIT 212,7/101,6 B 913 ЕС.22 IADC: S333 Outside diameter, / inch 212,7 / 8 3 / 8 Core diameter, / inch 101,6 / 4 PDC cutter size, 10, 13 / 0.39, 0.51 Quantity of PDC cutters, pcs 2, 34 Height, / inch 265 / Weight, kg / lb 26 / burintekh.com

43 TSP Core Heads TSP core heads are designed for coring in abrasive hard interbedded with strong formations of VI-IX category of hardness. They are noted for increased cutting structure durability. Core head matrix body allows multiply increase erosive wear resistance. Manufacturing of different tool sizes (32 to / 1 1 /4 to 11 5 /8 ). 215,9/100 В АМ Core head diameter Core diameter Manufacturer code Quantity of sectors Quantity of flushing holes Thermally stable polycrystalline diamonds (TSP) Additional options Conventional designation of TSP Core Heads produced by BURINTEKH, Ltd. BIT 215,9/100 В АМ IADC: M622 Outside diameter, / inch 215,9 / 8 ½ Core diameter, / inch 100 / 3.94 Quantity of flushing holes, pcs 12 Height, / inch 234 / 9.21 Rotating speed, rpm Flow rate, l/s / gpm / Recoended WOB, t / lb 6 15 / 13,000 33,000 Drive type Rotor, mud motor burintekh.com 43

44 CORING TOOLS Impregnated Core Heads Impregnated core heads are designed for coring in abrasive hard and very hard formations of VIII-X category of hardness. They are noted for increased cutting structure durability. Body of core head is made up of tungsten carbide alloy, which allows multiply increase erosive wear resistance. Manufacturing of different tool sizes (32 to / 1 1 /4 to 11 5 /8 ). 144/80 В АМ Core head diameter Core diameter Manufacturer code Quantity of sectors Quantity of flushing holes Diamond impregnated Additional options Conventional designation of Impregnated Core Heads produced by BURINTEKH, Ltd. BIT 144/80 В АМ IADC: D843 Outside diameter, / inch 144 / 5.67 Core diameter, / inch 80 / 3.15 Quantity of flushing holes, pcs 11 Height, / inch 366 / Rotating speed, rpm Flow rate, l/s / gpm / Recoended WOB, t / lb 2 5 / 4,500 11,000 Drive type Rotor, mud motor 44 burintekh.com

45 Core Barrels Core barrels are designed for coring with downhole hydraulic motor or rotor in formations of I-III category of recovery difficulty using core heads equipped with PDC cutters, thermally stable polycrystalline (TSP), impregnated diamonds or its combination. High quality bare pipes of domestic and foreign manufacturers are used in producing core barrels. All components pass strict quality control. Core barrel design is multi-purpose and allows using one barrel for coring isolated and non-isolated core due to using fiberglass core tubes and insulating fluid. Nomenclature SК 178/100 Core barrel Body outside diameter, Core diameter, Distinctive design features of BURINTEKH, Ltd. core barrels: Increased body diameter and reinforced threads increase service life and provide continuous trouble-free operation of core barrel; Core tube tapered thread considerably speeds up make up and lay down operations; Inner core tube suspension design allows making fast clearance adjustment between core head and inner-tube shoe and, if necessary, change standard heavy series thrust bearing within minutes at rig site; Collet core-cutters have necessary elastic characteristics due to special heat treatment technology and equipped with high roughness cover of tungsten carbide throughout inside diameter, which provide reliable core catching during brake-off and pulling-out operations; The variety of toggle-type core catchers allows selecting overlapped core tube cross-section area depending on type of formation for reliable core keeping during pulling out operation; Spiral centralizers decrease vibrations and fluctuations and allow increasing of core recovery percentage in fissured, cavernous and broken formations. Core Barrel burintekh.com 45

46 CORING TOOLS Core barrel includes all auxiliary tools and spare parts necessary for make up and lay down operations at rig site. In accordance with the customer requirements, core barrels can include: Crossover sub with changeable nozzles that limits flow rate through barrel and core head during coring with hydraulic motor, operation of which requires high flow rates; Spiral centralizers, diameter of which is selected depending on concrete drilling conditions; Insulating fluid IZOKOR produced by BURINTEKH, Ltd. with high rheological properties, adhesion, lubricating capacity, which allows preventing filtrate penetration into core material. Core Barrel technical specifications Parameters Tool series SК-178/100 (178/80*) SК-178/100 «Long» SК-127/80 SК-102/52 Applied core head diameter, 212,7 220,7 212,7 220,7 138,1 152, ,9 Core diameter, 100 (80) Outside body diameter, ,6 Centralizer diameter, Quantity of sections Maximal operating length, Core recovery effective length, Connection threads Top box** Z-133 Z-133 Z-102 Z-86 Bottom pin МК 165х6х1:16 Sp МК 165х6х1:16 Sp МК 124х4х1:16 Sp NKT Parameters SК-178/100 «Long4» Tool series SК-178/100 «Long5» SК-178/100 «Long».У Applied core head diameter, 212,7 220,7 212,7 220,7 295, ,2 Core diameter, Outside body diameter, Centralizer diameter, Quantity of sections Maximal operating length, Core recovery effective length, Connection threads Top box** Bottom pin Z-133 МК 165х6х1:16 Z-133 МК 165х6х1:16 Sp Z-171 Z-189 * Core barrel SK-178/80 with core diameter 80 may be produced from core barrel SK-178/100. ** Tool having any connection thread may be produced depending on customer requirements. 46 burintekh.com

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48

49 SIDETRACKING AND WELL WORKOVER OPERATION TOOLS

50 SIDETRACKING AND WELL WORKOVER OPERATION TOOLS One of the enterprise activities is producing tools for sidetracking and well workover operations. Wide range of producing tools and ability to design it depending on concrete geological and technological conditions allow effectively solve any challenges. All products are patented and certified in accordance with existing requirements. Casing Window Milling Kits BURINTEKH offers most effective solutions for window milling in 140, 146, 168 and 178 casings and sidetracking in one trip as tool kits Overhead and Overhead Hydro capable to mill a window both with and without cement plug. This considerably decreases well drilling time and cost. All whipstocks and anchors designs provide smooth trip and reliable anchoring, excepting its turning or movement while milling. All mills provide high rates of penetration. For window milling in 245 casing and in high dogleg severity holes we recoend to use two trip system KF. All tool kits, if necessary, supplied with pressure test sub PO for inner pipe surface conditioning, washing, descale and flushing sub PPSH for reverse circulation flushing before casing window milling. Casing Window Milling Kit «OVERHEAD» 50 burintekh.com

51 «OVERHEAD» One trip system Overhead includes: Mechanical anchor Designed for fixation whipstock in casing with support to bottomhole. Anchor design allows, if necessary, retrieving whipstock and anchor from the well. Anchor is multi-purpose and can be used in two casing sizes. Tool series Outside diameter, Overall length, Connection threads Bottom pin GOST Top box GOST YA-140/146 «Divergent» NKT-89 Z-86 YA-168/178 «Divergent» NKT-89 Z-102 Whipstock Designed for providing necessary tilting of milling assembly with respect to bore axis during window milling. Whipstock is multi-purpose and can be used in two casing sizes. Tool series Outside diameter, Overall length, Slot slope, degree Connection thread GOST КО-146 «Overhead» ,5 Z-86 КО-168 «Overhead» ,5 Z-102 Window mill Designed for casing window milling and sidetracking. Cutting structure of all window mills is made up of tungsten carbide plates and granulated hard alloy. Window mill with code Y has consimilar with closest in size drill bit profile, which provides casing window milling and rathole drilling at high rates of penetration. Tool series Outside diameter, Height, Casing diameter / wall thickness, Connection thread GOST FО-102 «Overhead» FО-102Y «Overhead» 396 FО-107 «Overhead» FО-107Y «Overhead» 396 FО-112 «Overhead» FО-112Y «Overhead» 396 FО-127 «Overhead» FО-127Y «Overhead» 445 FО-132 «Overhead» FО-132Y «Overhead» 445 FО-138 «Overhead» FО-138Y «Overhead» / 10,5 Z / 7,7; 146 / 10,7 Z / 8,5 Z / 12,1; 178 / 16,3 Z / 8,9; 178 / 13,7 Z / 10,4 Z-86 burintekh.com 51

52 SIDETRACKING AND WELL WORKOVER OPERATION TOOLS Bottom mill-reamer Designed for reaming casing walls in milled window. Mill-reamer cutting structure is represented by granulated hard alloy. Tool series Outside diameter, Length (total/ without thread), Casing diameter / wall thickness, Connection threads GOST FR «Overhead» / 10,5 Z-65 FR «Overhead» / / 7,7; 146 / 10,7 Z-73 FR «Overhead» / 8,5 Z-73 FR «Overhead» / 12,1; 178 / 16,3 Z-86 FR «Overhead» / / 8,9; 178 / 13,7 Z-86 FR «Overhead» / 10,4 Z-86 Top mill-reamer Designed for reaming walls in milled window. Mill-reamers cutting structure is represented by granulated hard alloy. Tool series Outside diameter, Length (total/ without thread), Casing diameter / wall thickness, Connection threads GOST FR «Overhead» / 10,5 Z-65 FR «Overhead» / / 7,7; 146 / 10,7 Z-73 FR-6-124,5 «Overhead» 124,5 146 / 8,5 Z-73 FR «Overhead» / 12,1; 178 / 16,3 Z / 1550 FR «Overhead» / 8,9; 178 / 13,7 Z-86 FR «Overhead» / / 10,4 Z-86 Sub Designed for joining milling assembly to drill string. Tool series Outside diameter, Length (total/ without thread), Connection threads GOST Top box Bottom pin P-86/65 «Overhead» Z / 280 P-86/73 «Overhead» 108 Z-86 Z-73 P-86/86 «Overhead» 339 / 250 Z-86 P-102/66 «Overhead» / 300 Z-102 Retrieving hook Designed for retrieving whipstock and anchor from well. Tool series Drift diameter, Length, Connection thread (box) GOST КI ±5 1800±10 Z-73 КI ±5 2000±10 Z burintekh.com

53 «OVERHEAD HYDRO» In contrast to Overhead one trip system Overhead Hydro does not require support on bottomhole (cement plug). Fixation of whipstock in casing is provided due to special hydraulic anchor, which activates under the effect of high liquid pressure created in pipes. Whipstock and window mill have special fluid drive providing transmission of hydraulic power to anchor. Other components are the same as for Overhead system. Hydraulic anchor Designed for fixation whipstock in casing without support to bottomhole. Anchor design allows, if necessary, retrieving whipstock and anchor from the well. Anchor is multi-purpose and can be used in two casing sizes. Tool series Outside diameter, Overall length, Connection threads Bottom pin Top box GOST GOST YA-140/146 «Divergent Hydro» NKT-89 Z-86 YA-168/178 «Divergent Hydro» NKT-89 Z-102 Hydraulic pipe anchor Designed for fixation whipstock in casing without support to bottomhole. Anchor provides reliable fixation excluding axial and tangential displacements because of high shearing resistance due to large operating surface. Tool series Outside Connection threads Overall length, diameter, Bottom pin Top box GOST GOST YAGT ±50 NKT-89 Z-86 YAGT ±50 NKT-89 Z-102 Whipstock Designed for providing necessary tilting of milling assembly with respect to bore axis during window milling. Whipstock is multi-purpose and can be used in two casing sizes. Tool series Outside diameter, Overall length, Slot slope, degree Connection thread GOST КО-146 «Overhead Hydro» ,5 Z-86 КО-168 «Overhead Hydro» ,5 Z-102 Window mill Designed for casing window milling and sidetracking. Cutting structure of all window mills is made up of tungsten carbide plates and granulated hard alloy. Tool series Outside diameter, Height, Casing diameter / wall thickness, Connection thread GOST FО-102 «Overhead Hydro» / 10,5 Z-65 FО-107 «Overhead Hydro» / 7,7; 146 / 10,7 Z-73 FО-112 «Overhead Hydro» / 8,5 Z-73 FО-127 «Overhead Hydro» / 12,1; 178 / 16,3 Z-86 FО-132 «Overhead Hydro» / 8,9; 178 / 13,7 Z-86 FО-138 «Overhead Hydro» / 10,4 Z-86 burintekh.com 53

54 SIDETRACKING AND WELL WORKOVER OPERATION TOOLS «КF» KF system is designed for casing window milling and sidetracking in two trips. This system is most efficient in wells with high dogleg severity. Kits are produced for window milling in 140, 146, 168, 178, 245 casings. Two trip system KF includes: Mechanical anchor Designed for fixation whipstock in casing with support to bottomhole. Anchor design allows, if necessary, retrieving whipstock and anchor from the well. Anchor is multipurpose and can be used in two casing sizes. Tool series Outside diameter, Overall length, Connection threads Bottom pin Top box GOST GOST YA-140/ NKT-89 Z-86 YA-168/ NKT-89 Z-102 YA-219/ Z-86* Z-117 * completed with slip collar with connection thread Z-86 (GOST ) for 102 tubing. Whipstock Designed for providing necessary tilting of milling assembly with respect to bore axis during window milling. Whipstock is multi-purpose and can be used in two casing sizes Tool series Outside diameter, Overall length, Slot slope, degree Connection threads GOST КОS ,5 Z-86 КОS ,5 Z-102 КОS Z burintekh.com

55 Starting mill Designed for lowering whipstock into position and milling initial window. KF-245 system is completed with mounting sub PY-245 instead of starting mill. Tool series Outside Connection thread Height, Casing diameter, diameter, GOST KFS Z-73 KFS Z-73 KFS ; 178 Z-86 PY Z-133 Window mill Designed for casing window milling and sidetracking. Cutting structure of all window mills is made up of tungsten carbide plates and granulated hard alloy. Tool series Outside diameter, Connection thread Height, Casing diameter, GOST КFО КFО-124,5 124,5 146 Z-73 КFО КFО Z-86 КFО Z-133 Mill-reamer Designed for reaming walls in milled window. Mill-reamers cutting structure is represented by granulated hard alloy. Tool series Outside diameter, Casing diameter, Connection thread Height, GOST КFR КFR-124,5 124, Z-73 КFR КFR Z-86 КFR Z-133 Retrieving hook Designed for retrieving whipstock and anchor from well. Tool series Drift diameter, Length, Connection thread (box) GOST КI ±5 1800±10 Z-73 КI ±5 2000±10 Z-86 burintekh.com 55

56 SIDETRACKING AND WELL WORKOVER OPERATION TOOLS Casing Section Milling Tools Expandable mill FKR is designed for continuous casing section milling throughout the diameter in any interval of wellbore. Expansion of blades, reinforced with high quality composite material, into operating position is provided by the effect of differential fluid pressure between flowbore and wellbore annulus. FKR delivery set includes back valve, which prevents tool from sludging during round-trip operations and changeable nozzles easily replaceable in rig conditions. Delivery set of expandable mills FKR includes back pressure valve which prevents tool from sludging during round-trip operations and interchangeable blades easily replaceable in rig conditions. Tool series Casing size, Body diameter, Centralizer diameter, Opening diameter, Connection threads GOST FКR Z-73 NC-26 FКR Z-86 NC-31 FКR FКR FКR Z-102 NC FКR FКR Z /2 FH FКR API 56 burintekh.com

57 Openhole Sidetracking Kits KF-C Sidetracking kit KF-C is designed for provision of necessary tilting of drilling assembly with respect to bore axis for intentional sidetracking to bypass an unusable section. Kit is non-retrievable and cemented with preliminary supporting to bottomhole. KF-C kit includes: Anchor Designed for fixation whipstock in openhole with support to bottomhole by cementing. Tool series Outside diameter, Overall length, Connection thread (box) GOST YA-216C Z-147 YA-295C Z-171 Whipstock Designed for necessary tilting of drilling assembly with respect to bore axis during sidetracking. Tool series Outside diameter, Overall length, Slot slope, degree Connection thread (box) GOST Top box Bottom pin КОS-216C ,5 Z-147 Z-147 КОS-295C ,5 Z-147 Z-171 burintekh.com 57

58 SIDETRACKING AND WELL WORKOVER OPERATION TOOLS Pipe Cutters Internal hydromechanical pipe cutters TGMV are designed for cutting part of casing or tubing string in well for further retrieving to surface during repair-and-renewal operations. Expansion of blades, reinforced with high quality composite material, into operating position is provided by the effect of differential fluid pressure between flowbore and annulus. Delivery set includes interchangeable blades easily replaceable in rig conditions. Tool series Body diameter, Centralizer diameter, String diameter, Opening diameter, TGMV Z-35 Connection thread Weight, kg GOST R API TGMV ,5 55 Z-42 TGMV ,1 TGMV Z-73 NC burintekh.com

59 Mills Junk Mills Junk mill FZ2 is effective tools for milling metal objects on the bottomhole. Cutting surface is reinforced with composite material made up of granulated hard alloy and binder material that allows mill to easily operate in difficult milling conditions where high durability of tool is required. Concave junk mill FZV2 is modification of FZ2 with concave working surface that allows centralizing unfixed milling objects relative to mill. FZ2 and FZV2 mills can be produced with increased cover of granulated hard alloy that is designated by Y letter in the end of tool series name. Mill type FZ2 FZV2 Outside diameter, GOST Connection thread API Z-66 2 ⅜ Reg Z-76 2 ⅞ Reg Z-88 3 ½ Reg Z ½ Reg Z ½ FH Z ½ Reg Z ½ FH Special junk mill FZ2 Sp is the most effective and multi-purpose tool for drilling out cement and sand plugs, casing equipment, milling metal objects on the bottomhole. Effective cutting at high ROP is achieved due to tungsten carbide plates and selfsharpening effect. Combined cutting structure considerably increases mill operating characteristics and expands area of application: besides milling light alloy pipes, tubings, drilling out cement plugs at favorable conditions FZ2 Sp successfully recoended itself in milling casing equipment and drill pipes. Mill type FZ2 Sp Outside diameter, GOST Connection thread API 68 Z Z-66 2 ⅜ Reg Z-73 NC Z-76 2 ⅞ Reg Z-86 NC Z ½ Reg 224 Z-102 NC Z ½ Reg burintekh.com 59

60 SIDETRACKING AND WELL WORKOVER OPERATION TOOLS Spiral junk mill FZS2 is designed for drilling out cement and sand plugs, casing equipment, milling metal objects on the bottomhole. Special feature of this tool is cutting face and spiral gauging blades reinforced with granulated hard alloy. Washover Mills Washover mill FK2 has massive cutting edge reinforced with granulated hard alloy and designed for milling big metal objects in heavy conditions. Washover mill FK2 Sp is reinforced with granulated hard alloy and tungsten carbide teeth. Designed for milling stuck drill pipes, tubings and sucker rods. All washover mills are produced with welding bevel. Combined Mills Washover junk mill FZK2 is combination of junk and washover mills. Designed for continuous milling pipes, unfixed metal objects with outrunning milling of annular space in cased well. Washover junk mill FZK2 Sp is combination of washover and special junk mills. Effective cutting at high ROP is achieved due to tungsten carbide plates and self-sharpening effect. Pilot mill FP is designed for milling components of tubings, liners, packers, joints and sleeves during repair-and-renewal operations. Capable to work in heavy milling conditions where high durability of tool is required. Main design feature is cutting surface reinforced with composite material made up of granulated hard alloy and binding material. Magnetic mill FM is multi-porpose tool designed for retrieving metal objects with ferromagnetic properties from well. Cutting mill crown allows milling metal object before retrieving. Mill type FM Outside diameter, GOST Connection thread API Z-66 2 ⅜ Reg Z-76 2 ⅞ Reg Z-88 3 ½ Reg Z ½ Reg Z ½ FH 60 burintekh.com

61 Taper String Mills Taper string mills are designed for reaming elliptical pipes (restoring internal diameter), milling out a collapsed section of pipes, removing an internal surface roughness and cleaning a casing window. Main feature of this tool is a tapered working surface reinforced with granulated hard alloy. Taper string mill FKK2 has cone angle of 10 and taper reamer mill RK2 5. At customer option all mills of FKK2 and RK2 types can be produced with central flushing hole, thus marking will include index C. Mill type FКК2 RК2 Outside diameter, GOST Connection thread API 85 Z Z-66 2 ⅞ Reg Z-76 2 ⅞ Reg Z-88 3 ½ Reg Z ½ FH Z ½ FH 120,6 Z-76 2 ⅞ Reg Z-86 NC Z-88 3 ½ Reg Reamer Mill and Bit-mill Reamer mill FR is designed for drilling-out cement and sand plugs, casing equipment and milling metal objects on the bottomhole. Effective cutting at high ROP is achieved due to tungsten carbide plates and self-sharpening effect. Bit-mill DTF is designed for drilling-out cement and sand plugs, casing equipment in favorable conditions with small impact loads. burintekh.com 61

62 SIDETRACKING AND WELL WORKOVER OPERATION TOOLS Reamer Stabilizers Reamer stabilizer KRp-2ST is designed for calibrating and reaming well sections represented by medium, hard and abrasive formations. Reamer stabilizers allow reaming horizontal and high dogleg severity wells preventing accidental sidetracking and sizing wellbore to nominal diameter. Reamer stabilizers are produced with two tapered surfaces. Tapered surfaces, reinforced with tungsten carbide inserts with cutting edge, comprise reaming part of a tool. Letter p on nomenclature designates box-pin type body, letter S spiral blades, L left-hand thread (designated with an LH at the end of the thread designation), number at the end of code quantity of blades. Tool series Outside Length (total/without Connection threads diameter, thread), GOST API KRpS-95-2SТ /500 Z-66 2 ⅜ Reg KRp-113,5-2SТ 113,5 KRp-117,5-2 SТ 117,5 KRp-120,6-2SТ 756/680 Z-73 NC-26 KRpS-120,6-2SТ KRp-120,6-2SТ L 120,6 Z-73LH NC-26LH Z-76 2⅞ Reg KRp-120,6-2SТ 769/680 Z-86 NC-31 KRp-122,8-2SТ 122,8 KRp-123,8-2SТ 756/680 Z-73 NC-26 KRpS-123,8-2SТ KRp-123,8-2SТ.5 123,8 769/680 Z-86 NC-31 KRp-123,8-2SТ L Z-86LH NC-31LH KRp-123,8-2SТ 780/680 Z-83 KRp-125-2SТ 125 KRp-125,5-2SТ 125,5 KRp-126-2SТ /680 KRpS-126-2SТ Z-86 NC-31 KRp-127-2SТ 127 KRp-127,2-2SТ 127,2 KRp-139,7-2SТ KRp-139,7-2SТ.4 139,7 819/730 KRp-139,7-2SТ Z-76 2⅞ Reg KRp-140-2SТ 140 KRp-142-2SТ 142 KRp-142-2SТ.4 813/724 Z-86 NC-31 KRp-142,6-2SТ 142,6 KRp-142,9-2SТ KRp-142,9-2SТ.4 142,9 KRp-143-2SТ 143,0 KRp-143,9-2SТ 143,9 KRp-144-2SТ /724 KRp-145-2SТ 145 Z-86 NC-31 KRp-146-2SТ 146 KRp-152-2SТ / /898 Z-102 NC-38 KRp-152,4-2SТ 152,4 987/898 KRpS-156-2SТ /861 Z-86 NC-31 KRp-210-2SТ 210 KRp-212-2SТ 212 KRp-213-2SТ /900 Z ½ FH KRp-214,5-2SТ 214,5 KRp-215-2SТ 1098/ KRpS-215-2SТ 1540/1425 Z-133 NC-50 KRp-215,9-2SТ 215,9 KRp-218-2SТ /900 Z ½ FH 62 burintekh.com

63 Puncher Designs of all punchers are protected by patents of Russian Federation. Modernized pipe puncher PTM is designed for punching 8 25 holes in tubing and casing from 60 to 168 of domestic and foreign manufacturers to make a counication between the interior cavity and the exterior annular space. This hole provides circulation restoring, prevents pulling pipes with fluid out of wellbore, and refilling into cement sheath and decreases environmental pollution while well workover operations. Punchers are produced of several series: ordinary K, for application in gas medium G, for application at depth m VD. Punchers are run in a hole on wire, cable, flush-joint pipes or by throwing off. Potential energy of a fluid column and pumping unit pressure are used to actuate a puncher. Tool series Outside diameter, Length, Pipe diameter / wall thickness, Hole diameter, Connection thread (box) Weight, kg PTM-60КS / 5, М33 1,5 10 PTM-73КS / 5, М33 1,5 13 PTM-89КS / 6,5 (7,34) М39 1,5 25 PTM-102КS / 7, М39 1,5 30 PTM-114КS / 7, М39 1,5 35 PTM / 10, Upon customer request 56 PTM / 12, Upon customer request 62 Modernized Pipe Puncher burintekh.com 63

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65 JARS

66 JARS Our hydraulic and mechanical jars are designed for releasing a stuck downhole tool by up-and-down impacts with static axial load (tension) and torque. Jars are included in drilling assemblies for sidetracking. We produce right and left hand fishing and drilling jars. Today, we produce a brand-new torsional jars purposed for releasing a stuck tool by upand-down torsional impacts. Axial Jars Design of axial jar is own BURINTEKH, Ltd. development protected by Russian and foreign patents. Main advantages are: Singular case thread (between body and bottom sub); Compactness which allows transport it on pickup and deliver it to hard-to-reach areas on helicopter without external suspension; Absence of extreme loads to hydraulic cylinder appearing during jar performance; Ability of quick repair by changing hydraulic cylinder; Jars for upward and downward impacts are different tools and can be placed in the drillstring independently from each other or only one of them. Hydraulic jar YAGB-172 is produced of several series: ordinary YAGB-172, for rotary BHA YAGB-172R, for working at high pressure YAGB-172VD. Tool series Outside diameter, Drift diameter, Length in fold position/with pulled out spindle, Connection threads GOST Top Bottom Weight, kg YAGR / 2093 Z-66 (Z-65) Z-66 (Z-65) 56 YAGR-95 95, / 2341 Z-76 Z YAGR ,8 106, / 2818 Z-86 Z YAGB ,8 50, / 2401 Z-86 Z YAMB-114Н 114,8 50, / 2180 Z-86 Z YAGB , / 2384 Z-102 Z YAGB / 2442 Z-133 Z YAGB-172R / 2973 Z-133 Z YAGB-172VD / 2966 Z-133 Z YAMB-172Н / 2442 Z-133 Z YAGB-195-PR / 2860 Z-152 Z Box Pin Axial Jars 66 burintekh.com

67 Torsional Jars SHOCK TURN Design of torsional jar is own BURINTEKH, Ltd. development protected by Russian and foreign patents. Why is stuck tool released by only up-and-down impacts along well axis? In fact, life experience suggests that for pulling, for example, driven nail out it is better not only pull it, but pull with simultaneous turn. Obviously, it is easier to free stuck downhole tool if not only axial impact loads but also shock torsion torque are applied. To solve this challenge, we developed torsional jars SHOCK TURN, which can affect stuck tool by clockwise and counterclockwise and up-and-down impacts in different combinations. Main advantages are: High power capacity. Torsional jar impact strength 5 6 times bigger than ordinary jar; Singular case thread (between body and bottom sub); Compactness which allows transport it on pickup and deliver it to hard-to-reach areas on helicopter without external suspension; Absence of extreme loads to hydraulic cylinder appearing during jar performance; Ability of quick repair by changing hydraulic cylinder; Extended functional capabilities. Tool series Outside diameter, Drift diameter, Length in fold position/with pulled out spindle, Connection threads GOST Top Bottom Box Pin Weight, kg YAGK / 2334 Z-86 Z YAGK ,8 50, / 2400 Z-86 Z YAGK , / 2384 Z-102 Z YAGK / 2700 Z-133 Z Torsional Jar SHOCK TURN burintekh.com 67

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69 BHA COMPONENTS

70 BHA COMPONENTS BURINTEKH permanently expands the range of products, and today, offers several unique solutions in the form of brand new tools like dampers and bit protectors, which provide optimal uniform loading of rock destruction tool, and damping of torsional, axial vibrations and impacts acting on drill bit. One more tool is string reciprocator, which helps to release stuck downhole tool in lateral or horizontal section of well. The use of string reciprocator together with hydraulic jar considerably increases effectiveness of stuck tool releasing. Stabilizers BURINTEKH produces milled and welded stabilizers with straight and spiral blades for working in formations of various categories of hardness. Designed for reaming a wellbore and stabilizing drilling string components. Stabilizers of K and C series have following design features: KP (CP) stabilizer with straight blades; KS (CS) - stabilizer with spiral blades; KLS (CLS) - stabilizer with spiral blades directed opposite to direction of rotation. According to cutting structure, stabilizers can be: ST for working in formations of I-III category of hardness, equipped with tungsten carbide inserts; STK for working in formations of III-IV category of hardness, equipped with tungsten carbide inserts, slugs and impregnated diamond grains; TK - for working in formations of V-VI category of hardness, equipped with tungsten carbide slugs and impregnated diamond grains. 70 burintekh.com

71 Dampers Damper is own original BURINTEKH, Ltd. development protected by patent. Damper KPD is designed for providing optimal uniform loading of rock destruction tool where unbalanced, because of friction, movement of drill string is present, and for damping of axial vibrations acting on drill bit while drilling. Damper is placed above mud motor or MWD and does not require an additional differential pressure to work. Tool series Outside diameter, Drift diameter, Length in fold position/with pulled out spindle, Connection threads GOST Top Bottom Weight, kg KPD , / 2500 Z-133 Z Box Pin Damper burintekh.com 71

72 BHA COMPONENTS Bit Protectors Bit protector is own original BURINTEKH, Ltd. development protected by patent. Bit protector PZ is designed for damping of torsional and axial vibrations, single torsional and axial impacts acting on PDC bit while drilling, and for providing optimal uniform loading of rock destruction tool. Bit protector is placed above drill bit while drilling with top drive or hydraulic motor. Tool series Outside diameter, Drift diameter, Length in fold position/with pulled out spindle, Connection threads GOST Top Bottom Weight, kg Box Pin PZ / 586 Z-76 Z PZ ,8 958 / 998 Z-114 Z PZ / 1606 Z-152 Z Bit Protector 72 burintekh.com

73 String Reciprocators String reciprocator is own original BURINTEKH, Ltd. development protected by patent. String reciprocator RKM is designed for releasing a stuck downhole tool or equipment by up-and-down impacts with static axial load (tension) and torque. Main advantages: increase of effectiveness of stuck tool releasing in lateral or horizontal section due to working together with axial or torsional jar of YAGR(B) series; minimum influence on a drilling process; ability of installing in tensile or compressed string section, moreover on inclined or horizontal well interval; smooth, because of design features, passing through milled casing window while lateral well drilling; absence of severe restrictions on depth and temperature. Tool series Outside diameter, Drift diameter, Length in fold position/with pulled out spindle, Connection threads GOST Weight, kg Top Bottom Box Pin RКМ , / 2097 Z-86 Z RКМ / 2420 Z-133 Z String Reciprocator burintekh.com 73

74 BURINTEKH, Ltd. 4/1 Yubileinaya Street, Ufa Republic of Bashkortostan, Russia , burintekh.com Representatives RUSSIA Orenburg Buzuluk burinteh-buzuluk@yandex.ru Nefteyugansk Safarov_EV@burinteh.com Nizhnevartovsk var@burinteh.com Noyabrsk nbr@burinteh.com Gubkinsky gub@burinteh.com Krasnoyarsk kr@burinteh.com Irkutsk and Ust -Kyt Chernokalov_IA@burinteh.com Tyumen kylish75@mail.ru Nyagan nyagan@burinteh.com Surgut surgut@burinteh.com Kogalym kogalym@burinteh.com Novy Urengoy urengoi_bit@mail.ru Tomsk tomsk@burinteh.com 74 burintekh.com

75 KAZAKHSTAN AZERBAIJAN TURKMENISTAN USA CANADA burintekh.com 75