3 7/8-12 1/4 ROCK BITS. Digital Catalog. Current January, 2008 GT ENGINEERING, INC.

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1 3 7/8-12 1/4 ROCK BITS Digital Catalog Current January, 2008 ENGINEERING, INC.

2 For decades, the Gault family has been providing quality rock bits to the drilling industry. What began as a small fabricating shop in Allen, OK is now a state of the art manufacturing facility in Shawnee, Oklahoma. Our attention to detail and hands-on philosophy have been demonstrated throughout this long history. By working closely with drillers, we developed our first jet bit in 1946 and patented it in This patent, (#2,524,428), was for the jetted rock bit that revolutionized the hydraulics at the bottom of the hole. Today this relationship is still evident when we are able to produce new and improved cutting structures for specific fields in a matter of weeks. We regularly expand our product line to meet more and more drilling challenges. Our in-house carbide plant allows us to produce high quality, specialty carbides for numerous applications. We are dedicated to improving manufacturing processes but we never shortchange our quality. Every bit we make is to the highest standards in materials, metallurgical processes and workmanship. This dedication ensures the consistency that drillers rely on day after day. GT Bit Page 04X 3 09X 4 15X 5 18X 6 22X 7 23X 8 24X 9 25X 10 25Y 11 31X 12 33Y 13 35X 14 35Y 15 38Y 16 40A 17 40AG 18 42X 19 This forging means you have a genuine Bit. It means reliablity, performability & superior ROP. GT04X 12 1/4 43X 20 44X 21 44Y 22 45Y 23 55Y 24 Bits are Made in the USA and Shipped World Wide Engineering, Inc. 7 American Way Shawnee, OK (405) info@gtengineering.com Cross Reference Availability Coming Coming Bit photographs in this catalog are shown in grayscale for optimal clarity and detail. GT is a registered trademark of Engineering, Inc. 2 Engineering, Inc.

IADC 417 Application Range 417-427 04X ASSY # 3540 12 1/4 (311mm)

Number of Rows: 9 Inner Row Inserts: 42-3/4 & 7/8 Chisel Heel Row

Weight on Bit Range: 1500-4000 lb/in of bit diameter Normal Rotary

3 IADC 417 Application Range X ASSY # /4 (311mm) Effective in low compressive strength, soft sedimentary formations Number of Rows: 9 Inner Row Inserts: 42-3/4 & 7/8 Chisel Heel Row Inserts: 39-7/8 Chisel Bit Connection: 6 5/8 API Reg. Weight on Bit Range: lb/in of bit diameter Normal Rotary Speed Range: RPM Hughes: GX-03 Reed: TD41 Security: XS03 Smith: GFS /4 (311mm) 8 3/4 (222MM) 3

IADC 437 Application Range 427-447 09X 7 7/8 (200mm) ASSY # 3410 This bit has a very

formations. The small dome inserts keep the bit in gage without slowing it down.

Dome Uses same nozzles as 7 7/8 Weight on Bit Range: 1500-5000 lb/in of bit diameter

4 IADC 437 Application Range X 7 7/8 (200mm) ASSY # 3410 This bit has a very aggressive offset for an outstanding penetration rate in very soft and poorly consolidated formations. The small dome inserts keep the bit in gage without slowing it down. Number of Rows: 12 Inner Row Inserts: 50-9/16 Chisel Heel Row Inserts: 60-9/16 WCC & 1/4 Dome Uses same nozzles as 7 7/8 Weight on Bit Range: lb/in of bit diameter Normal Rotary Speed Range: RPM 6 (152mm) 6 (152mm) Hughes: GT09 Reed: HP43 Security: XS09, XS10 Smith: F1 4

IADC 437 Application Range 427-437 15X 7 7/8 (200mm) Shown ASSY # 2710 Effective in low compressive strength, soft sedimentary formations.

5 IADC 437 Application Range X 7 7/8 (200mm) Shown ASSY # 2710 Effective in low compressive strength, soft sedimentary formations. Number of Rows: 10 Inner Row Inserts: 47-9/16 Chisel Heel Row Inserts: 33-1/2 WCC Silver-plated Thrust Washer Weight on Bit Range: lb/in of bit diameter Normal Rotary Speed Range: RPM Hughes: GT09 Reed: TD43 Security: XS10 Smith: F1 This bit has very blunt ovoid inserts on the inner rows and domes on the gage row for very hard and abrasive formations that have a high compressive strength. 5

IADC 447 Application Range 437-517 18X 7 7/8 (200mm) Shown ASSY # 2750 Effective in low compressive strength, soft sedimentary formations Number of Rows: 10 Inner Row Inserts: 47-9/16 Chisel Heel Row

6 IADC 447 Application Range X 7 7/8 (200mm) Shown ASSY # 2750 Effective in low compressive strength, soft sedimentary formations Number of Rows: 10 Inner Row Inserts: 47-9/16 Chisel Heel Row Inserts: 33-1/2 WCC Weight on Bit Range: lb/in of bit diameter Normal Rotary Speed Range: RPM Hughes: GT09 Reed: TD43 Security: XS10 Smith: F1 Slightly denser carbide drill pattern than the GT15X with the same offset for fast drilling through slightly harder formations. 6

IADC 517 Application Range 517-527 22X 8 3/4 (200mm) Shown ASSY # 3740 Most effective in soft,

Number of Rows: 10 Inner Row Inserts: 57-9/16 & 5/8 Chisel Heel Row Inserts: 44-9/16 Chisel Uses same

7 IADC 517 Application Range X 8 3/4 (200mm) Shown ASSY # 3740 Most effective in soft, low-compressive strength formation that respond to sharp, chisel inserts. Number of Rows: 10 Inner Row Inserts: 57-9/16 & 5/8 Chisel Heel Row Inserts: 44-9/16 Chisel Uses same nozzles as 7 7/8 Weight on Bit Range: lb/in of bit diameter Normal Rotary Speed Range: RPM Hughes: GX22 Reed: TD51X Security: XS22 Smith: FH22 7

IADC 517 Application Range 517-527 23X 8 3/4 (222mm) Shown ASSY # 3760 For use in soft, low-compressive strength formations that respond to the gouging, cutting action of more rounded inserts.

8 IADC 517 Application Range X 8 3/4 (222mm) Shown ASSY # 3760 For use in soft, low-compressive strength formations that respond to the gouging, cutting action of more rounded inserts. Number of Rows: 10 Inner Row Inserts: 57-9/16 & 5/8 SC Chisel Heel Row Inserts: 44-9/16 WC Chisel Uses same nozzles as 7 7/8 Weight on Bit Range: lb/in of bit diameter Normal Rotary Speed Range: RPM Hughes: GX23 Reed: HP51 Security: XS23 Smith: FH23 8

IADC 517 24X 7 7/8 (200mm) Shown ASSY # 2850 Soft, low-compressive strength formations.

9 IADC X 7 7/8 (200mm) Shown ASSY # 2850 Soft, low-compressive strength formations. Number of Rows: 10 Inner Row Inserts: 55-9/16 & 1/2 Chisel Heel Row Inserts: 37-9/16 Chisel Weight on Bit Range: lb/in of bit diameter Normal Rotary Speed Range: RPM Hughes: GT20 Reed: TD51X Security: XS20 Smith: F2 9

IADC 517 Application Range 437-527 25X 7 7/8 (200mm) Shown ASSY # 3510 Most effective in softer formations.

10 IADC 517 Application Range X 7 7/8 (200mm) Shown ASSY # 3510 Most effective in softer formations. Addition of dome shaped inserts in the gage row prevents undersize holes in abrasive formations. Number of Rows: 11 Inner Row Inserts: 59-9/16 Chisel Heel Row Inserts: 40-7/16 WCC & 3/8 Dome Weight on Bit Range: lb/in of bit diameter Normal Rotary Speed Range: RPM Hughes: GX25 Reed: HP52X Security: XS24 Smith: FH26 The GT25X has sturdy chisel inserts on the inner rows and a combination of wedge-crested chisels and domes on the gage row to keep the hole in gage through more abrasive formations. 10

11 IADC 527 Application Range Y 7 7/8 (200mm) Shown ASSY # 2610 Most effective in soft to medium strength sedimetary formations. Number of Rows: 11 Inner Row Inserts: 64-9/16 Conical Heel Row Inserts: 41-7/16 WCC & 3/8 Dome Weight on Bit Range: lb/in of bit diameter Normal Rotary Speed Range: RPM Hughes: GT20C Reed: TD521 Security: XS27 Smith: F27 Identicle to the GT25X except it has substituted long, conical inserts in the inner rows. This is best used in formations that respond to conical inserts. 11

IADC 527 Application Range 527-537 31X 8 3/4 (222mm) Shown ASSY # 3220 This bit is a very aggressive, medium bit;

Number of Rows: 12 Inner Row Inserts: 90-9/16 Chisel Heel Row Inserts: 47-7/16 WCC Uses same nozzles as 7 7/8

12 IADC 527 Application Range X 8 3/4 (222mm) Shown ASSY # 3220 This bit is a very aggressive, medium bit; fast and tough. It has double gage packs to give it full heelrow protection to maintain gage. Number of Rows: 12 Inner Row Inserts: 90-9/16 Chisel Heel Row Inserts: 47-7/16 WCC Uses same nozzles as 7 7/8 Weight on Bit Range: lb/in of bit diameter Normal Rotary Speed Range: RPM Hughes: GX30 Reed: R28AM Security: XS31 Smith: FH30 12

IADC 537 Application Range 537-547 33Y 7 7/8 (200mm) Shown ASSY # 3830 Most effective in medium hard formations that have

Journal Angle: 36º Number of Rows: 11 Inner Row Inserts: 73-9/16 Conical Heel Row Inserts: 41-7/16 Dome Weight on Bit

13 IADC 537 Application Range Y 7 7/8 (200mm) Shown ASSY # 3830 Most effective in medium hard formations that have frequent stringers of harder material. It combines the toughness of harder formations with the exposure of softer ones. Journal Angle: 36º Number of Rows: 11 Inner Row Inserts: 73-9/16 Conical Heel Row Inserts: 41-7/16 Dome Weight on Bit Range: lb/in of bit diameter Normal Rotary Speed Range: RPM Hughes: GX30C Reed: HP53 Security: XS33 Smith: FH32 13

IADC 537 Application Range 537-547 35X 8 3/4 (222mm) Shown ASSY # 3790 Most effective in soft to medium formations with harder streaks.

14 IADC 537 Application Range X 8 3/4 (222mm) Shown ASSY # 3790 Most effective in soft to medium formations with harder streaks. Number of Rows: 11 Inner Row Inserts: 66-9/16 & 5/8 Chisel Heel Row Inserts: 46-1/2 WCC Uses same nozzles as 7 7/8 Weight on Bit Range: lb/in of bit diameter Normal Rotary Speed Range: RPM Hughes: GX35 Reed: TD53 Security: XS33 Smith: FH35 This bit combines the aggressive skew with durable, chisel inserts that will provide a high rate of penetration and not be damaged by any hard stringers found in the well bore. 14

IADC 547 Application Range 547-617 35Y 7 7/8 (200mm) Shown ASSY # 2551 Most effective in medium-strength formations with streaks of harder materials.

15 IADC 547 Application Range Y 7 7/8 (200mm) Shown ASSY # 2551 Most effective in medium-strength formations with streaks of harder materials. Number of Rows: 11 Inner Row Inserts: 69-9/16 Conical Heel Row Inserts: 40-7/16 WCC Weight on Bit Range: lb/in of bit diameter Normal Rotary Speed Range: RPM Identicle to the GT35X but with conical inserts. This bit has wedge-crested, gage row inserts just like the GT35X. Hughes: GT30C Reed: HP54 Security: XS30 Smith: F35 15

IADC 547 Application Range 547-617 38Y 7 7/8 (200mm) Shown ASSY # 2630 Most effective in medium-strength formations with streaks of harder materials.

16 IADC 547 Application Range Y 7 7/8 (200mm) Shown ASSY # 2630 Most effective in medium-strength formations with streaks of harder materials. Number of Rows: 11 Inner Row Inserts: 69-9/16 Conical Heel Row Inserts: 40-7/16 Dome Weight on Bit Range: lb/in of bit diameter Normal Rotary Speed Range: RPM Hughes: GT30C Reed: TD54 Security: XS37 Smith: F37 Conical, inner-row inserts and domed, gage row inserts, situated on an aggressive skew, make this an ideal bit for medium-soft formations with harder streaks. 16

IADC 617 Application Range 617-627 40A 8 3/4 (222mm) Shown ASSY # 3320 Small, tightly packed inserts provide a rapid penetration rate when using air drilling.

Journal Angle: 36º Number of Rows: 13 Inner Row Inserts: 97-1/2 Conical Heel Row Inserts: 58-7/16 Dome Dense Cutting Structure Minimal Offset Uses same nozzles as 7-7/8 Weight on

17 IADC 617 Application Range A 8 3/4 (222mm) Shown ASSY # 3320 Small, tightly packed inserts provide a rapid penetration rate when using air drilling. Double rows of gage packs provide full, heel-row coverage. Journal Angle: 36º Number of Rows: 13 Inner Row Inserts: 97-1/2 Conical Heel Row Inserts: 58-7/16 Dome Dense Cutting Structure Minimal Offset Uses same nozzles as 7-7/8 Weight on Bit Range: lb/in of bit diameter Normal Rotary Speed Range: RPM Hughes: XL40A Reed: TD61A Smith: F47A The GT40A is an extremely durable and aggressive air drilling, sealed-bearing bit. This bit has a very dense insert pattern of conical inserts on the inner rows and domed inserts on the gage rows. 17

IADC 617 Application Range 617-627 40AG 11 (279mm) Shown ASSY # 3320 Small,

Double rows of gage packs provide full, heel-row coverage.

Dome Dense Cutting Structure Minimal Offset Uses same nozzles as 7-7/8 Weight on

18 IADC 617 Application Range AG 11 (279mm) Shown ASSY # 3320 Small, tightly packed inserts provide a rapid penetration rate when using air drilling. Double rows of gage packs provide full, heel-row coverage. Number of Rows: 13 Inner Row Inserts: 97-1/2 Conical Heel Row Inserts: 58-7/16 Dome Dense Cutting Structure Minimal Offset Uses same nozzles as 7-7/8 Weight on Bit Range: lb/in of bit diameter Normal Rotary Speed Range: RPM Hughes: XL40A Reed: TD61A Smith: F47A 18

IADC 617 Application Range 547-617 42X 8 3/4 (222mm) Shown ASSY # 3840 Best used in medium formations with hard streaks.

Bit Range: 3000-6000 lb/in of bit diameter Normal Rotary Speed Range: 50-110 RPM Hughes: GX44 Reed: TD61 Security: XS42 Smith: F47 Less skew than that found

19 IADC 617 Application Range X 8 3/4 (222mm) Shown ASSY # 3840 Best used in medium formations with hard streaks. Number of Rows: 15 Inner Row Inserts: 107-3/8 & 7/16 Dome, 1/2 Chisel Heel Row Inserts: 50-7/16 Contoured Wedge Chisel Uses same nozzles as 7-7/8 Weight on Bit Range: lb/in of bit diameter Normal Rotary Speed Range: RPM Hughes: GX44 Reed: TD61 Security: XS42 Smith: F47 Less skew than that found on the softer bits. The GT42X has chisel inserts throughout the cutting structure. The inserts on the gage row are wedge-crested chisels that enable it to cut effectively in medium formations. 19

IADC 617 Application Range 617-627 43X 8 3/4 (222mm) Shown ASSY # 3860 The GT43X is best used in medium

Journal Angle: 36º Number of Rows: 15 Inner Row Inserts: 108-3/8 & 7/16 Dome, 1/2 Chisel Heel Row

20 IADC 617 Application Range X 8 3/4 (222mm) Shown ASSY # 3860 The GT43X is best used in medium formations with hard streaks. Journal Angle: 36º Number of Rows: 15 Inner Row Inserts: 108-3/8 & 7/16 Dome, 1/2 Chisel Heel Row Inserts: 52-7/16 Dome Uses same nozzles as 7 7/8 Weight on Bit Range: lb/in of bit diameter Normal Rotary Speed Range: RPM Hughes: GX44 Reed: TD61 Security: XS42 Smith: F47 20

IADC 627 Application Range 617-627 44X 8 3/4 (222mm) Shown ASSY # 3810 An aggressive bit designed to go through

Journal Angle: 36º Number of Rows: 15 Inner Row Inserts: 108-3/8 & 7/16 Dome, 1/2 Chisel Heel Row Inserts: 52-7/16

21 IADC 627 Application Range X 8 3/4 (222mm) Shown ASSY # 3810 An aggressive bit designed to go through formations with high compressive strength with some harder stringers. Journal Angle: 36º Number of Rows: 15 Inner Row Inserts: 108-3/8 & 7/16 Dome, 1/2 Chisel Heel Row Inserts: 52-7/16 Dome Uses same nozzles as 7 7/8 Weight on Bit Range: lb/in of bit diameter Normal Rotary Speed Range: RPM Hughes: GX44 Reed: TD62 Security: XS46 Smith: F47 21

IADC 627 Application Range 627-637 44Y 8 3/4 (222mm) Shown ASSY # 3820 Effective in formations with high compressive strength with some harder stringers.

on Bit Range: 3500-6000 lb/in of bit diameter Normal Rotary Speed Range: 40-80 RPM Hughes: GX44C Reed: TD62 Security: XS47 Smith: F43Y The GT44Y has ovoid

22 IADC 627 Application Range Y 8 3/4 (222mm) Shown ASSY # 3820 Effective in formations with high compressive strength with some harder stringers. Journal Angle: 36º Number of Rows: 15 Inner Row Inserts: 108-3/8 & 7/16 Dome, 1/2 Conical Heel Row Inserts: 52-7/16 Dome Uses same nozzles as 7 7/8 Weight on Bit Range: lb/in of bit diameter Normal Rotary Speed Range: RPM Hughes: GX44C Reed: TD62 Security: XS47 Smith: F43Y The GT44Y has ovoid inserts on the gage row. It is most effective in harder formations. The GT44Y has proven itself with a rate of penetration superior to comparable bits. 22

IADC 627 Application Range 617-637 45Y 7 7/8 (200mm) Shown ASSY # 2410 Most effective in medium to medium hard formations.

23 IADC 627 Application Range Y 7 7/8 (200mm) Shown ASSY # 2410 Most effective in medium to medium hard formations. Journal Angle: 36º Number of Rows: 13 Inner Row Inserts: 80-1/2 Conical Heel Row Inserts: 48-7/16 Dome Weight on Bit Range: lb/in of bit diameter Normal Rotary Speed Range: RPM Hughes: GX45C Reed: TD63 Security: XS51 Smith: F47Y Slightly more dense than the GT44Y for slightly harder and more abrasive formations. It too has ovoid inserts on the inner rows and domes on the gage row. 23

IADC 637 55Y 7 7/8 (200mm) ASSY # 2800 Use in medium hard formations with abrasive

Journal Angle: 36º Number of Rows: 14 Inner Row Inserts: 79-1/2 Conical Heel Row

24 IADC Y 7 7/8 (200mm) ASSY # 2800 Use in medium hard formations with abrasive qualities. Journal Angle: 36º Number of Rows: 14 Inner Row Inserts: 79-1/2 Conical Heel Row Inserts: 45-7/16 Dome Weight on Bit Range: lb/in of bit diameter Normal Rotary Speed Range: RPM Reed: TD63 Security: XS52 Smith: F57Y 6 1/4 (159mm) 24

TR53 (IADC 5-3-1) MEDIUM SOFT FORMATIONS

TR53 (IADC 5-3-1) MEDIUM SOFT FORMATIONS TR52 (IADC 5-2-1) SOFT TO MEDIUM SOFT FORMATIONS AMS TR52 designed for efficient drilling of soft to medium formations such as shale, red bed, limestone and other strata of low compressive strength with