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Welcome to the website of Jiangxi Feilong Rock Bit Manufacture Co., Ltd.!

Rubber sealed insert bit

2021-12-0126Author:Jiangxi Feilong Rock Bit Manufacture Co., Ltd.

1、Summarize

Tri-cone Rock Bit has a widest variety of uses. Cutting teeth cut the bottom alternately. The rock breaking torsion and the contact area between teeth and bottom are small, while the specific pressure is high. This makes the bit easier to enter the stratum. The total working blade is long, which can reduce formation abrasion. Tri-cone Rock Bit is suitable for various formations from soft to hard.

2、Structural features

Insert bit is a tri-cone rock bit with sleeve or rolling  bearing and jet design. It has the merit of optimized teeth placement, different teeth shape and height for different formations, well gauge protection, anti-attrition alloy on bearing system, silver plating, elaborate processing, anti-seizure, high strength and long working life. It is widely used in oil and gas exploitation and geological prospecting with a high drilling efficiency.

High strength and high tenacity carbide inserts are applied on the bit. The optimized teeth placement, height and shapes provide a well performance of high abrasion resistance and cutting capacity.

3、Recommended drilling parameters

Formation

Bit Type

Drilling Weight  

(KN/mm)

Rotary Speed

(r/m)

Very soft: such as soft marl, unconsolidated sand-stone, salt, etc.

437

0.4-0.7

100-50

Soft strata with low compressive strength and high drill ability, such as shale, clay, sandstone, soft limestone, etc

515

0.25-0.7

140-80

Soft strata with low compressive strength and high drill ability, such as shale, clay, sandstone, soft limestone, etc

517

0.35-0.9

100-50

Low compressive strength, medium and soft, and relatively hard abrasive interlayer strata, such as hard shale, hard gypsum, soft limestone, sandstone, laminated dolomite, etc

537

0.5-0.9

180-40

Formation with moderate hardness with high compressive strength ,Such as hard shale, limestone, sandstone, etc

617

0.5-1.0

80-40

With hard abrasive streak,such as hard shale,anhydrite,soft lime-stone,dolomite,etc

637

0.55-1.05

70-30

Note: The upper limits of drilling weight and rotary speed recommended in 

4、Main Models 

Bit size

Bit type

inch

mm

3 3/8

85.7

GY537

3 7/8

98.4

GY537

4 9/16

115.9

GY437

4 5/8

117.5

GY437、GY537

5 1/8

130.2

GY537

5 1/4

133.4

GY537

5 1/2

139.7

GY537

5 5/8

142.9

GY537、GY637

5 3/4

146.1

GY537、GY637

5 7/8

149.2

GY517

6

152.4

GY537、GY617、GY637、GY737

6 1/8

155.6

GY517

6 1/2

165.1

GY547、GY637

7 1/2

190.5

GY547

7 5/8

193.7

GY537

7 7/8

200.0

GY517、GY617、GY647

8 3/8

212.7

GY517

8 1/2

215.9

GY437、GY517、GY537、GY617、GY637

8 5/8

219.1

GY617

8 3/4

222.3

GY437、GY517、GY537、GY637

9

228.6

GY537、GY637

9 1/2

241.3

GY437、GY517、GY537、GY637

9 5/8

244.5

GY537、GY617

9 3/4

247.7

GY437

9 7/8

250.8

GY437、GY517、GY537、GY617、GY637

10 5/8

269.9

GY437、GY537、GY637

11

279.4

GY617

11 5/8

295.3

GY437、GY517、GY537

12 3/8

314.3

GY517

12 1/4

311.2

GY437、GY517、GY537、GY637

12 3/4

323.9

GY537

13 1/8

333.4

GY537

13 5/8

346.1

GY517、GY537、GY617、GY637

13 3/4

349.3

GY417、GY637

14 1/4

368.3

GY537

14 3/4

374.7

GY515、GY517、GY537

15

381.0

GY515

15 1/2

393.7

GY435、GY545、GY637

16

406.4

GY435、GY515、GY617、GY637

17 1/2

444.5

GY515、GY517、GY537、GY637

18 1/2

469.9

GY537

20

508.0

GY535

23

584.2

GY435、GY515

26

660.4

GY515

Additional features can be selected according to SY/T 5164-2016 table 2.