SonicScope MULTIPOLE SONIC-WHILE-DRILLING SERVICE

Transcription

1 SonicScope MULTIPOLE SONIC-WHILE-DRILLING SERVICE

2 SonicScope MULTIPOLE SONIC-WHILE-DRILLING SERVICE Bring more confidence to your drilling operations. Combining high-quality monopole and quadrupole measurements, the SonicScope* multipole sonic-while-drilling service delivers real-time compressional and shear slowness along with Stoneley data in any formation, regardless of mud slowness. These measurements enable more confident decisions while drilling, helping you eliminate unnecessary casing strings, mitigate risk and improve safety, reduce nonproductive time, and save drilling days and costs. ii

3 SonicScope 9 SonicScope 82 SonicScope 67 SonicScope 47 iii

4 Applications Borehole stability and pore pressure monitoring Real-time and memory top-of-cement evaluation Cement bond index calculation Synthetic seismogram generation for seismic tie-in Porosity evaluation and hydrocarbon identification Fracture evaluation Perforation optimization Benefits Mitigates risks and reduces costs by enabling real-time decision making Enhances production through optimized completion design Strengthens understanding of cement placement and quality Increases operational flexibility with the ability to run anywhere in BHA configuration even with two reamers Improves understanding of wellbore strength and stability by obtaining compressional and shear data independent of mud slowness, in any formation Enables more effective mud-weight window management Takes station measurements during connections Minimizes well placement and casing positioning uncertainty with accurate sonicto-seismic tie Features 48 digitized receivers with refined interreceiver spacing to prevent aliasing at any depth Wideband multipole transmitter to eliminate complex source selection Flexible multimode, high-resolution acquisition recorded in 2-GB memory Slowness-time-coherence projection, surface labeling, and QC logs Real-time and memory Leaky-P models High-speed acquisition and real-time capability up to 1,8 ft/h for 6-in sampling Automatic labeling Real-time and memory monopole compressional and shear data Real-time and memory quadrupole shear data

5 SonicScope Service Cement evaluation service The cement evaluation component of the SonicScope service was developed to address the industry s need for well integrity assessment while reducing well construction costs. The two parts of the SonicScope service, cement detection and cement bond evaluation, enable rapid assessment of the cementing operation outcome and increase confidence before drilling out the shoe. SonicScope Service combines high-quality monopole and quadrupole measurements for all hole sizes. Drill with confidence. 1

6 2 The SonicScope service offers a variety of logs and plots that enables a thorough quality-control process for data confidence.

7 Real-time wellbore stability By allowing real-time mud-weight window management, the SonicScope service helps you manage wellbore stability while avoiding kicks and losses, reducing stuck pipe risk, and minimizing nonproductive time. This evaluation, independent of formation temperature and salinity effects, helps you properly evaluate the pore pressure and fracture gradient so that the mud-weight window can be adjusted to mitigate drilling risks. Real-time sonic-to-seismic tie The SonicScope service s robust real-time compressional data can be used to build a synthetic seismogram that reduces well position uncertainty. Placing the bit on the surface seismic map enables you to make critical geosteering, landing, and geostopping decisions while drilling. Real-time petrophysical evaluation Robust compressional and shear measurements can help identify gas presence and estimate porosity without using radioactive sources that require complex logistics and added risk. This makes the SonicScope service particularly advantageous in carbonate reservoirs because it only responds to interconnected porosity. Completions optimization A unique firing mode enables Stoneley wave acquisition while drilling, before any washout can develop. The Stoneley wave is sensitive to open, permeable fractures intersecting the wellbore along with formation fluid mobility and formation shear slowness. Integrating Stoneley measurements allows an accurate interpretation of reservoir quality, geology, fracture network, and rock mechanics, helping you optimize completions to maximize production potential. 3

8 The SonicScope service computes real-time and recorded compressional and shear (P&S) data in both fast and slow formations. Comprehensive data quality control To reduce uncertainties with data, the SonicScope service offers a variety of logs and plots as part of a thorough quality-control process, enabling operators to evaluate data from the acquisition of waveforms to the computed compressional and shear data. Monopole Slowness-Time Coherence Shear 4 24 Delta-T Shear, Receiver Array - Monopole P&S 4 24 Quadrupole Shear 4 24 Spectrum 8 Hz Quadrupole Coherence Projection 4 24 Quadrupole Coherence Quadrupole Shear 4 24 Quadrupole Slowness Frequency Analysis 4 24 Quadrupole Shear 4 24 Dispersion Quality Control 8, Hz Minimum Frequency 8, Hz Maximum Frequency 8, Hz Semblance Spectrum 8 Hz Waveform Variable Density Log, us Integrated Transit Time us Slowness, ( Depth = 27, ft ) ( Depth = 27, ft ) Frequency, 1 khz1 Dispersion Plot 3 3 Amplitude, db db Slowness, ( ( 3 3 Slowness, ( Depth = 27,2 ft ) ( Depth = 27,2 ft ) Frequency, 1 khz1 3 3 Amplitude, db db Slowness, ( ( 3 3 Slowness, 3 ( Depth = 27,3 ft ) 3 Amplitude, db 1 1 Slowness, Depth 27, ft ( Depth = 27, ft ) Frequency, 1 khz1 3 3 Amplitude, db db Slowness, Depth 27,3 ft ( Depth = 27,3 ft ) Frequency, 1 khz1 3 3 Amplitude, db db Slowness, Depth ( Depth 3 3 Freq Freq A. Slowness time coherence provides full visualization of coherent arrivals and associated slowness. B. Quadrupole spectrum details the frequency content of the waveforms; the darker the spectrum, the stronger the energy. C. Quadrupole coherence projection represents the accuracy of the shear inversion. D. Quadrupole slowness frequency analysis determines the energy of the propagating waves by projecting the dispersions onto the slowness axis at each depth. E. Dispersion QC identifies how well the model from quadrupole inversion results fits the data. Slowness, F. Semblance spectrum highlights the frequency bandwidth over which the quadruple data is coherent. Slowness, Frequency, 1 khz1 3 3 G. Waveforms variable density log 1 1 Frequency, 1 khz1 enables QC of the waveform from a specific reservoir for compressional arrival and also checks if borehole washouts affect waveform amplitude. Depth 27,2 ft ( Depth = 27,2 ft ) 3 3 A B C D E F G H Depth 27,3 ft ( Depth = 27,3 ft ) 3 3 Amplitude, db db Amplitude, db db Slowness, 3 3 Depth 27,4 ft ( Depth = 27,4 ft ) Frequency, 1 khz1 Amplitude, db db H. Dispersion plot aids in understanding the different acoustic modes propagating in the borehole and is key for quality control of the processed slowness answers. Slowness, Slowness, Depth ( Depth 3 3 Freq Freq Depth ( Depth 3 3 Freq Freq 4

9 SonicScope service dispersion plot Dispersion plots help you understand the different acoustic modes propagating in the borehole and are key for quality control of the processed slowness measurements. They allow validating that the proper mode has been selected in the case of monopole, quadrupole, or Stoneley as well as that the processing has been correctly applied. Slowness, Slow Formation Depth = X,71 ft Not present in slow formations 1 6 Amplitude, db Slowness dispersion plot in slow formations answer is identified in the higherfrequency range of the monopole source data as a nondispersive compressional head wave. Quadrupole shear answer is extracted from the low-frequency part of borehole quadrupole mode using model-based inversion ,, 7, 1, 12, Frequency, Hz Slowness, Fast Formation Depth = X,641 ft Amplitude, db Slowness dispersion plot in fast formations answer is identified in the higherfrequency range of the monopole source data as a nondispersive compressional head wave. Shear answer can be extracted from both monopole source data as a shear head wave, quadrupole source data, or both. Quadrupole shear answer is extracted from the low-frequency part of borehole quadrupole mode using model-based inversion ,, 7, 1, 12, Frequency, Hz Stoneley mode Borehole quadrupole mode Collar quadrupole mode 4 Modeled dispersion curve of borehole quadrupole mode (solid red line) for the shear slowness output from the inversion (dashed red line) Shear head wave or pseudo-rayleigh mode Dispersive second-order quadrupole mode head wave Frequency spectra for monopole (green) and quadrupole (red)

10 Case Studies SonicScope Service Enables Reliable Acoustic Data Acquisition in Complex Appraisal Well, Northern Australian Basin Obtain high-quality LWD measurements in challenging appraisal wells In a field in the Northern Australian basin, the upper formations consist of soft, unconsolidated sediments, while deeper zones pose drilling challenges such as reactive shale, circulation losses, and stick/slip. In previous wells, these attributes led to high risk of wellbore instability, BHA damage, stuck pipe, and more. An operator planned to drill and evaluate an appraisal well. With limited evaluation data from the formations in the upper sections, the operator wanted to acquire high-quality LWD acoustic measurements that would reduce uncertainty and mitigate overall operational risk. Deliver accurate, real-time acoustic measurements Schlumberger recommended using the SonicScope multipole sonic-while-drilling service in the 9 tool size with the arcvision* array resistivity compensated service in the 16-in section. The SonicScope service delivers robust compressional, shear, and Stoneley wave data for accurate pore pressure and fracture gradient estimates, and the arcvision service provides real-time resistivity, gamma ray, inclination, and annular pressure-while-drilling measurements. 6

11 MD 9 (m) 1: 3 WL Gamma Ray 1 gapi Mudcake Rate of Penetration WL Caliper Axis 1 in 2 1 m/h WL Cable Tension WL Caliper Axis 2 lbf 2, 7, 1 in 2 LWD Gamma Ray gapi SeAttenuation a rch b a n d o ffse t: u s Se a rch b a n d w id th : u s Slo w n e ss lo w e r lim it: 4 u s/ft Sh e a r o n ly p ro ce ssin g : N o Resistivity 4 in ST C sta ck in g : N o Slo w n e ss u p p e r lim it: 24 u s/ft C o m pohm.m u te SF A : Ye s M a x fre q u e n cy : 1 H z M o d e l o rd e r: 2 M a tchmonopole in g to le ra n ce : LWD WL Monopole Phase Shift C o m p re ssio n a l lo w e r lim it: 9 u s/ft C o m p re ssio n a l u p p e r lim it: 22. u s/ft Slowness Coherence Resistivity 4it:in1112 u s/ft Slowness Sh e a r u p p e r lim T im e ste pcoherence : 12 u s.2 T im e w id th : 1946 u s R e fe re n ce re ce iv e r: 6 Washout Bit Size in 2 Se m b la n ce th re sh o ld :.3 Slo w n e ss ste p : 2 u s/ft Slo w n e ss w id th : 2 u s/ft M in fre q u e n cy : H z T im e lo w e r lim it: 48 u s Sh e a r lo w e r lim it: 16 u s/ft T im e u p p e r lim it: 432 u s W a v e fo rm : W F A_M H S LWD Quadrupole WL Dipole LWD Monopole Slowness Coherence Slowness Coherence LWD Quadrupole Shear In te g ra tio n tim e w in d o w : 4 u s D TSH 3 ohm.m R e ce iv e r se le ctio n : R 1;R 2;R 3;R 4;R ;R 6;R 7;R 8;R 9;R 1;R 11;R Phase Shift 4 us /ft Resistivity 28 in DT 3 D T C O _MH _R DTCO 3 ohm.m.2 4 us /ft WL Monopole us /ft LWD Monopole WL Monopole Phase Shift WL Dipole Shear LWD Quadrupole Shear WL Dipole Shear Resistivity 16 in 6 ohm.m LWD Dispersion Analysis 1 Dispersion Plot SonicScope service Current Depth: 1,XXX ft X2XX Slowness, ft Amplitude, ft X3XX 1 4 Slowness, ft Amplitude, ft XXX 1 Dispersion Plot SonicScope service Current Depth: 1,XXX ft Amplitude, ft 36 Slowness, ft 1 Dispersion Plot SonicScope service Current Depth: 1,XXX ft X9XX Amplitude, ft The operator achieved an ROP of up to 24 m/h [84 ft/h] while drilling the 16-in section, doubling the planned ROP of m/h [328 ft/h]. Using the SonicScope and arcvision services, the operator was able to acquire accurate, reliable acoustic data even in the unconsolidated upper section Slowness, ft Drilled with ROP up to 24 m/h while capturing high-resolution LWD data Dispersion Plot SonicScope service Current Depth: 1,XXX ft 1 4 Dispersion Plot SonicScope service Current Depth: 1,XXX ft X2XX Amplitude, ft 4 3 Slowness, ft 41 1 Dispersion Plot SonicScope service Current Depth: 1,XXX ft X4XX Slowness, ft Amplitude, ft 43 1 Dispersion Plot SonicScope service Current Depth: 1,XXX ft Slowness, ft 3 14X6XX Amplitude, ft 14XXX 14X7XX 1 Dispersion Plot SonicScope service Current Depth: 1,XXX ft Amplitude, ft 48 Slowness, ft Standard monopole and quadrupole measurements were compared with Sonic Scanner* acoustic scanning platform data. This comparison helped the operator to understand the limitations of the borehole geomechanics, ensuring optimal well path designs for future development wells and, ultimately, improving project economics

12 Case Studies Offshore Operator Avoids Potential Kick, Improves Depth Control with Real-Time Acoustic Data, Gulf of Mexico Mitigate exploration drilling challenges in the Gulf of Mexico An operator was running an appraisal campaign in the GOM. While resistivity was previously the only available measurement for predicting pore pressure due to the large hole size in the shallow section, estimates from sonic data had proved more precise. The operator needed to acquire high-quality data to eliminate operational gaps while meeting directional and other drilling objectives. Deploy BHA with LWD technology to achieve directional drilling and geological objectives Because the planned well path would cross a sand layer, it was important to land the 17 7/8-in shoe carefully and use real-time modeling to avoid the pressure ramp and mitigate risk. Before drilling, Schlumberger recommended that the operator deploy the SonicScope service, paired with the arcvision array resistivity compensated service, across the 26-in, 18 1/8-in 21-in, and 16 1/2-in 19-in sections to capture high-quality LWD measurements. This would be the first time the service was run in the 26-in section worldwide. Operations commenced per the predrill plan, and the operator tracked the location of the anticipated pore pressure ramp in real time. 8

13 Attenuation Resistivity 4 in.2 ohm.m Prevented potential kick and avoided setting casing in known pressure ramp The use of the SonicScope service enabled an accurate seismic tie-in to a nearby well, which showed a possible 6-ft depth discrepancy in the pressure ramp s location. With this information, the operator decided to set the 17 7/8-in casing ft shallower to avoid drilling into the pressure ramp. The high-resolution seismic tie, coupled with the real-time pore pressure prediction, enabled the operator to prevent a potential kick situation near the 17 7/8-in shoe, saving an estimated USD, to 3, in drilling costs. The operator used the high-quality acoustic measurements obtained using the SonicScope service to help confirm predrill models and avoid a potential kick through better depth control. The multipole sonic-while-drilling capabilities of the SonicScope service provided results that exceeded those achieved using alternative technologies in comparable situations. MD,ft X,32 X,3 X,37 X,4 X,42 Phase Shift Resistivity 4 in.2 ohm.m Gamma Ray 28 in gapi 1.2 ohm.m Well Deviation 16 in Monopole Slowness Coherence Monopole Signal Frequency Analysis Monopole Transit Time 448 4,48 Variable Density Log deg 9.2 ohm.m ,48 Slowness, ft Slowness, ft Slowness, ft Dispersion Analysis Dispersion Plot SonicScope service Current Depth: X, ft Dispersion Plot SonicScope service Current Depth: X, ft Amplitude, ft Amplitude, ft Amplitude, ft The SonicScope service delivers reliable compressional data in 26-in tophole sections. 9

14 Case Studies Operator Uses Multipole Sonic-While-Drilling Service to Drill Complex, Overpressured Shale Diapir Shale formation with limited offset data While drilling a shallow-water well offshore China, an operator needed to better understand the complex, high-pressure formation to successfully drill the 8 1/2-in section with 31.8 deviation in a high stick/slip environment. Without extensive data from a predefined model or offset wells, real-time pore pressure monitoring and seismic tie-in would provide the necessary information to help the operator drill the well and mitigate risk. By using advanced multipole sonic-while-drilling technologies that obtain robust real-time and recorded measurements, the operator could more successfully drill while obtaining insight for future wells. Multipole sonic data while drilling Schlumberger recommended using the SonicScope service, which would enable more confident decisions while drilling, help mitigate risk, and save drilling days and costs. High-quality measurements This operation marked the first time that the SonicScope 67 service was run in China. Using the service, the operator achieved drilling objectives, monitoring pore pressure in real time despite the high stick/slip risk in the shale formation. Using real-time sonic and density logs, high-quality synthetics were generated for accurate surface-to-seismic correlation in the time-depth domain. 1

15 Washout Phase Shift Resistivity, 22-in Spacing.2 ohm.m Real Time Monopole Slowness Coherence 4 24 Bit Size Phase Shift Resistivity, 28-in Spacing Monopole Real Time Monopole 6 in 16.2 ohm.m The data obtained by the SonicScope service enabled the operator to optimize well placement and mitigate risk when drilling the complex, overpressured shale diapir. After pulling out of hole, data recorded by the SonicScope service was delivered to the operator s technical experts for future prestack AVO surface seismic inversions. Density Caliper 6 in 16 Hole Deviation gapi 1 gapi 1 MD X,X1 X,X2 Phase Shift Resistivity, 34-in Spacing.2 ohm.m Phase Shift Resistivity, 4-in Spacing.2 ohm.m Phase Shift Resistivity, 16-in Spacing.2 ohm.m N-D Crossover Bulk Density 1.8 g/cm Thermal Neutron Porosity.4 m 3 /m 3.1 Monopole Shear 4 24 Pumps Off 4 24 Pumps Off Shear 4 24 Monopole Slowness Coherence 4 24 Monopole 4 24 Quadrupole Slowness Coherence 4 24 Quadrupole Shear 4 24 Real Time Monopole Shear 4 24 Monopole Shear 4 24 Monopole 4 24 Monopole Shear 4 24 Quadrupole Shear 4 24 X,X3 X,X4 X,X X,X6 X,X7 X,X8 X,X9 X,X X,X1 The operator concluded during the QC process that there was excellent data consistency between the real-time and record memory and well as the monopole and quadrupole measurements. X,X2 11

16 Case Studies Dual-Reamer BHA Paired With SonicScope Service Saves Operator Logging and Reaming Runs Efficiently develop ultradeepwater wells An NOC planned to drill wells in an exploration campaign in the Gulf of Mexico. Successfully drilling and evaluating ultradeepwater wells is a challenging process involving narrower mud-weight windows, shallow geohazards, and seismic velocity uncertainties affecting pore pressure modeling. The operator needed to find an LWD solution that effectively mitigated these risks and enabled setting the casing at the correct depth. Customize BHA to acquire quality data The operator and Schlumberger collaborated to develop a compact BHA configuration that included the SonicScope and a dual-reamer design. The SonicScope service in the 82 tool size would be placed closer to the bit to enable earlier detection of drilling hazards. Additionally, the shorter BHA would allow drilling a short pilot hole and placing casing at the needed depth. Meet demanding drilling objectives and save 2 days The innovative BHA configuration saved 2 days of rig time by eliminating the need for additional logging and reaming. The quality log data provided by the SonicScope service was used to successfully drill the well and set the casing at the correct depth. The sonic data was used for real-time geomechanics and monitoring of the wells. 12

17 SonicScope Sonic Scanner SonicScope Sonic Scanner Monopole Monopole Slowness Coherence Slowness Coherence Sonic Scanner Quadrupole Dipole Slowness Coherence Slowness Coherence Shear Sonic Scanner As high-quality, real-time data was acquired, the holes were underreamed to deliver a hole size suitable for running the casing designed in the well program. The technology provided by Schlumberger helped the operator drill the wells in an area with high-risk, unconsolidated formations in the shallow sections, along with increasing pore pressure and complex geology in the deeper sections. MD, m,1, Gamma Ray API 1 4 us / ft 24 4 us / ft 24 4 us / ft 24 4 us / ft SonicScope us / ft 46 Shear 8 us / ft 46 8 us / ft 46 Shear 8 us / ft Shear SonicScope 8 46,2,3 The SonicScope service delivered wireline-quality data despite the acoustically complex drilling environment created by having two reamers on the BHA.,3 13

18 Case Studies Full LWD Suite Optimizes Completion Design in High-Angle Offshore Wells Improve production and reduce costs An operator was drilling offshore shallow wells 4,-m long with a horizontal section exceeding 3, m. The company worked closely with Schlumberger to improve production and minimize the costs associated with logging the long horizontal sections. A permanent openhole completion system was selected to enable placing multiple fracturing treatments in a single pumping operation, but the fracturing strategy using logs from nearby pilot or horizontal wells had not been adequate to optimize completion placement selection and to enhance the fracturing design. Drilling a vertical pilot well followed by target layer measurement of reservoir properties was not an option due to economic constraints. Acquire and interpret high-quality data The operator geosteered the well using the PowerDrive X6* rotary steerable system and the PeriScope* bed boundary mapping service while recording triple-combo information for petrophysics; compressional and shear data for rock mechanics; and Stoneley data and images for fracture evaluation. LWD services included the SonicScope service, adnvision* azimuthal density neutron service, and StethoScope* formation pressure-while-drilling service. The data were analyzed by Schlumberger experts, providing petrophysical evaluation (effective porosity, permeability, and oil/water contact location); stress variations for fracturing modeling and design; caliper variations for optimal packer setup; and open permeable fracture location to enhance production and to avoid the risk of draining water. The interpreted data were used to optimize the position of each of the five stages to maximize future production. 14

19 Optimized completion design More than 3, m of data were recorded in one run and interpreted in less than 24 h to optimize the completions design using data acquired along the lateral section. A similar workflow is now being implemented on a well-to-well basis where multistage hydraulic fracturing is planned to enhance hydrocarbon production. The addition of rock mechanics information was crucial to better predict the fracture height and to avoid fracturing the water zone. The information was supported by a 3D mechanical earth model built using the Petrel* E&P software platform, which provided real-time data interpretation and helped maximize production. Evaluation of rock mechanics over the lateral section based on sonic compressional and shear information. These properties are displayed in color from low stress (blue) to high stress (red). Stoneley data for fracture analysis shows several strong reflections interpreted as open permeable fractures. Completion design was changed based on the knowledge of fracture location and the nature of the fluid contained. 1

20 Measurement Specifications Monopole compressional and shear Quadrupole shear Stoneley slowness Slowness (DT), full waveforms 4 to mud slowness Slowness (DT), full waveforms 4 to mud slowness Slowness (DT), full waveforms 4 to mud slowness Slowness (DT), full waveforms 4 to mud slowness Shear slowness, 6 to 6 7 to 7 7 to 7 7 to 7 Sensors 1 multipole transmitter 2 dedicated transmitters 2 dedicated transmitters 2 dedicated transmitters Receivers 48 receivers 48 receivers 48 receivers 48 receivers Downhole Memory Capacity, GB Recording time 6 d at 1-s record rate recording all modes continuously 1 d at 1-s record rate recording all modes continuously 12 d at 1-s record rate recording all modes continuously 18 d at 1-s record rate recording all modes continuously 12 d at 1-s record rate recording all modes continuously 18 d at 1-s record rate recording all modes continuously 12 d at 1-s record rate recording all modes continuously 18 d at 1-s record rate recording all modes continuously Max. logging speed, ft/h [m/h] 1,8 [49] 1,8 [49] 1,8 [49] 1,8 [49] Battery life d operating on battery only 7 d operating on battery only 7 d operating on battery only 7 d operating on battery only Power supply Battery or MWD turbine Battery or MWD turbine Battery or MWD turbine Battery or MWD turbine Combinability Fully combinable with all Schlumberger tools Fully combinable with all Schlumberger tools Fully combinable with all Schlumberger tools Fully combinable with all Schlumberger tools Mechanical Specifications Hole size, in [mm] 8 to 8 [143 to 23] 8¼ to 1 8 [21 to 27] 1 8 to 17½ [27 to 44] 12.2 to 26 [311 to 66] Collar OD, in [mm] 4.82 [122] 6.9 [17] 8.42 [214] 9. [228.6] Max. collar OD, in [mm].38 [137] 7.6 [194] 9.39 [239] 1 [24] Collar length, ft [m] 3 [9.14] 32 [9.7] 32 [9.7] 32 [812.8] Drill collar connection, in [mm] 4.82 [122] NC38 box 8.42 [214] ½ FH Box 8.42 [214] 6 8 FH Box 7/8 H9 box 16

21 Screw-on stabilizers Three-Blade Three-Blade Four-Blade Four-Blade Uphole and downhole 16.7 [.1] 21 [6.4] 2. [6.26] 2. [6.26] distance apart, ft [m] Max. OD, in [mm]. [14];.7 [146]; 6 [12]; 6. [16] 8.2 [21]; 9.2 [23] 1.2 [26]; 12 [3]; 14.2 [362]; 17.2 [438] 12 [3]; 14.2 [362]; 17.2 [438] Total flow area (TFA) More than 3% More than 3% More than 3% More than 3% Operating Specifications Max. dogleg (sliding), / ft Max. dogleg (rotating), / ft Max. flow rate, galus/min [L/min] 4 [1,14] 8 [3,28] 1, [4,42] 1,6 [6,6] Pressure drop constant (C) 7, 42, 13, 342, Max. pressure, psi [MPa] 2, [172.4] 3, [26.8] 3, [26.8] 2, [172.4] Max. temperature, degf [degc] 3 [149] 3 [149] 3 [149] 3 [149] HT option 3 [177] na na na Max. system shock level 3 min at shock Level 3 (-gn threshold) na = Not applicable. 3 min at shock Level 3 (-gn threshold) Combining monopole and quadrupole acquisition formation signal level required to measure shear is a function of noise level present while logging. Operating envelope for shear slowness is dependent upon hole size and mud slowness. One-second sampling at 1,8 ft/h, or 1-s sampling at 18 ft/h, provides two samples per foot. Tool can also be run without a battery for unlimited time. SonicScope 82 service has been run in hole sizes greater than 9⅝ in. TFA in in 2 is more than 3% of annular flow section (equivalent drill collar). Pressure drop, psi = [(mud weight, lbm/galus) (flow rate, galus/min)2] / C 3 min at shock Level 3 (-gn threshold) 3 min at shock level 3 (-gn, threshold) SonicScope 47 SonicScope 67 SonicScope 82 SonicScope 9 17

22 SonicScope MULTIPOLE SONIC-WHILE-DRILLING SERVICE Drill with confidence. High-quality monopole and quadrupole measurements in real time, in any formation Eliminate unnecessary casing strings Mitigate risk and improve safety Minimize nonproductive time Save drilling days and costs slb.com/sonicscope * Mark of Schlumberger Other company, product, and service names are the properties of their respective owners. Copyright 218 Schlumberger. All rights reserved. 18-DR-44283