Drill Bit Technical Support

Standard: API Spec Q1 & API Spec 7
Specification: 4"-121/4''

Usage: The Drill Collar is used between the drill pipe and the bit in the drill stem. It is used to put weight on the bit so that the bit can drill.

We can manufacture different kinds of drilling bits (4"-121/4'' in sizes) for different purposes, ranging from PDC bit, triangle polycrystalline diamond drilling bit, cylindrical PDC bit, coring bit, cast bit, PDC deflecting bit, double faces bit and so on. Meanwhile, we also would like to design and manufacture different types of drilling bits according to the special requirements of customers.

Description:

Highly reliable bits suitable for straight hole and directional well drilling applications. In addition to its excellent bearing system, our bits also have finely designed and selected cutting structures, carbide insert materials and hardfacing materials for steel tooth bits, so that the Bit size code: OD size & ID size to drill various complex formations is largely improved and this sufficiently reflected the constant charm of the standard product.

Diamond bits

  1. Optimally designed bit profile for drilling soft to medium hard formations.
  2. Cutting structure is force balanced, bit blade is asymmetrically designed, and spiral blade and spiral gage are also designed so that the load on bit is balanced that resulting better stability of the bit.
  3. Multiple types of high performance PDC cutters are strategically arranged on the bit for improved service life of the bit.
  4. Hydraulic system of the bit is optimized using CFD technology to enhance cleaning and cooling effects of the bit as well as the ability to effectively prevent bit from balling.
  5. Erosion on bit surface is effectively prevented by utilizing hardfacing material of highly erosion resistant and applying advanced base metal enhancement technology.
  6. Ports on bit are also optimally designed to prevent erosion of water courses inside the bit.
  7. Up-reaming features are also designed to make the bit more suitable for various drilling processes.

  1. Bit size code: ODsize IDsize
  2. Cutter type code：F，K，S，R，J，D
  3. Bit type code：M，S，X，B，Q
  4. Cutter density code: PDC and TSP, indicate with number 1-4 and 6-8, respectively from sparse to dense
  5. Bit crown shape code:NO.1 fishtail bit, NO.2 shallow cone, NO.3 short parabola, NO.4 parabola.
  6. Design and classification code:1-9 .
  7. Additional specifications: generally includes the material grand and other additional explanations

Diamond Drilling Bits Series

Series

Bit Type

O.D

API Pin Conn

Construction Styles

inch

mm

PDC

KM Series King Cutter PDC Drilling Bit

12KM226

12 1/4

311.1

6 5/8 REG

1.King compact cutten

2.Parabolic crown profile

12KM203

3.Super wide and deep junk  slot

84KM223

8 1/2

215.9

4 1/2 REG

4.Matrix-bodied,wing type cutting blade arrangement

12KM206

12 1/4

311.1

6 5/8 REG

1.Double king and stand conpacts

2.Short parabolic crown profile

3.Deep and wide junk slot

4.Matrix-bodied,wing type cutting blade arrangement

FM Series Standard Cutter PDC Drilling Bit

12FM226

1.Standard compact cutters

2.Parabolic crown profile

3.Super wide and deep junk slot

12KM236

4.Matrix-bodied,wing type cutting blade arrangement

12FM281

1.Short compact cutters

12FM282

2.Short parabolic crown profile

84FM202

8 1/2

215.9

4 1/2 REG

3.Deep and wide junk slot

94FM281

9 1/2

241.3

6 5/8 REG

4.Matrix-bodied,wing type cutting blade arrangement

86FM281

8 3/4

222.3

4 1/2 REG

　

84FM281

8 1/2

215.9

4 1/2 REG

　

84FM284

　

84FM285

　

84FM286

　

77FM284

C

200

4 1/2 REG

　

77FM202

70FM202

7

177.8

　

45FM202

4 5/8

117.5

2 3/8 REG

118FM202

　

118

　

12FM235

12 1/4

311.1

6 5/8 REG

94FM235

9 1/2

241.3

84FM235

8 1/2

215.9

4 1/2 REG

12FM212

12 1/4

311.1

6 5/8 REG

1.Standard compact cutters

84FM212

8 1/2

215.9

4 1/2 REG

2.Shallow cone crown profile

84FM282

3.Spiral scatterad cutters arrangement

77FM282

7 7/8

200

4.Matrix-bodied type

60FM222

6

152.4

3 1/2 REG

　

84FM233

8 1/2

215.9

4 1/2 REG

1.Stand and wedge cuttes

2.Shallow cone crown profile

3.Radioactive cutters arrangements

4.Matritx-bodied type

FX Series Standard Cutter PDC Directional Drikking Bit

12FX212

12 1/4

311.1

6 5/8 REG

1.Standard compact cutters

84FX203

8 1/2

215.9

4 1/2 REG

2.Shallow cone crown profile

84FX282

3.Radioactive cutters arrangements

60FX203

6

152.4

3 1/2 REG

4.Short gange length,Matix-bodied type

45FX202

4 5/8

117.5

2 3/8 REG

　

JM Series Triangular Polycrystalline Drilling Bit

84JM448

8 1/2

215.9

4 1/2 REG

1.Triangular polycrystalline cutters

60JM403

6

152.4

3 1/2 REG

2.Long cone crown profile

45JM403

4 5/8

117.5

2 7/8 REG

3.Matrix-bodied type

41JM403

4 1/8

104.8

2 3/8 REG

　

RM Series Cylindrical Polycrystalline Drilling Bit

60RM303

6

152.4

3 1/2 REG

1.Cylindrical polycrystalline cutters

57RM355

5 7/8

149.2

2.Long cone crown profile

45RM303

4 5/8

117.5

2 7/8 REG

3.Matrix-bodied type

41RM303

4 1/8

104.8

2 3/8 REG

　

 

BI-CENTER BITS

Series

Bit Type

O.D

API Pin Conn

Pilot O.D.

Drill O.D.

inch

mm

FB Series Standard PDC BI-Center Bit

45FB3551

4 5/8

117.6

2 7/8 REG

92

130

60FB4667

6

152.4

3 1/2 REG

120.65

174.6

JB Series Triangular Polycrystalline BI-Center Bit

45JB3551

4 5/8

117.6

2 7/8 REG

92

130

60JB4667

6

152.4

3 1/2 REG

120.65

174.6

 

Provide with the best bit selection！

　

　

　

　

　

　

　

　

　

IADC Code

Formation

Rock Type

Dagang Rock Bit

King Cutter Bits

PDC Bit

TSP Bit

Core Bit

Special Bit

111-126

Soft Formation with low layers and low compressive strength

Gumbo Clay Marl

ATJ-1/J2

KM203

　

　

　

　

417

ATX-1

KM226

　

ATJ-05

　

　

ATM-05

　

111-126

Soft formation with low compressive strength and high drillability

Marl Salt Anhydrite Shale

ATJ-1/J2

KM203

FM203

　

FQ11

FX212

417-447

ATJ-05

KM223

FM226

FQ12

FX282

　

ATM-05

KM226

FM212

　

　

　

ATJ-11

　

FM202

　

　

　

ATM-11

　

FM284

　

　

136-216

Soft to Medium formation with low compressive strength interbedded with hard layers

Sand Shale Chalk

J3-J4

KM226

FM236

　

FQ11

FX212

517-537

ATJ-22

KM206

FM235

FQ12

FX282

　

ATM-22

　

FM281

FQ203

　

　

ATJ-33

　

FM282

　

　

　

ATM-33

　

FM285

　

　

　

　

　

FM286

　

　

537-627

Medium to hard formation with high compressive Strength & small abrasive layers

Shale Mudstone Limestone Sandstone

ATJ-33

　

FM282

RM303

RQ302

　

ATM-33

FM233

JM403

RQ303

ATJ-44

　

JM448

RQ306

ATJ-44C

　

　

JQ402

ATJ-55R

　

　

JQ403

　

　

　

JQ406

637-737

Hard and dense formation with very high cimpressive strength but no abrasive layers

Limestone Dolomite Anhydrite

ATJ-55

　

　

RM303

RQ301

　

ATJ-77

JM403

RQ322

　

JM413

RQ316

　

JM448

JQ402

　

　

JQ403

　

　

JQ406

　

　

JQ407

837

Extremely hard and abrasive formation

Quartzite Volcanic

ATJ-99

　

　

　

DQ551

　

DG502

DG506