API 7-1 Standard Drill Collar

Model: API 7-1 drilling tools/downhole tools
Place of Origin: Shaanxi,China (Mainland)
Machine Type: Drilling Tool
Certification: API
Use: Well Drilling
Material: AISI 4145H
Length: 9150 or 9450 mm
Connection: NC23-31,NC31-41,NC35-47,NC38-50
OD: 79.4 - 279.4 mm
Condition: new
Manufacture technique: Hot forged and heat treated

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Product Description

Payment & Shipping Terms Supply Capacity
Unit Price:1.0 USDProduction Capacity:500 Piece/Pieces per...
Trade Term:FOB,CFR,CIF,DDP,DAP,CIP,CPT,FCA,EXWPacking:bundled
Payment Terms:T/TDelivery Date:10~30 days
Min. Order:1 Piece/Pieces
Means of Transport:Ocean, Air, Land

Drill collar

 

1.Meeting to API7-1

2.OD:3 1/8",3 1/2",4 1/8",4 3/4",5",6",,6 1/4',6 1/2",6 3/4",7",7 1/4",7 3/4",8",8 1/4",9",10",11"

3.Length:5"-31"

4.Type: slick drill collar,spiral drill collar,spiral drill collar with elevator groove and slip groove and non-magnetic drill collar

5.Material:ANSI4137 ,4145H,4145HM alloy steel.


Standard Drill Collar

Drill Collar Number*

Outside Diameter

Inside Diameter

Length

Approximate Weight

Bevel Diametre

 

 Bending Strength Ratio

in.

in.

ft  ±6in

lb/ft

NC 23-31

3 1/8

1 1/2

30

22

76.2

2.57:1

NC 26-35 (2-3/8 IF)

3 1/2

1 1/2

30

27

82.9

2.42:1

NC 31-41 (2-7/8 IF)

4 1/8

2

30 or 31

34

100.4

2.43:1

NC 35-47

4 3/4

2

30 or 31

47

114.7

2.58:1

NC 38-50 (3-1/2 IF)

5

2 1/4

30 or 31

54

121

2.38:1

NC 44-60

6

2 1/4

30 or 31

83

144.5

2.49:1

NC 44-60

6

2 13/16

30 or 31

76

144.5

2.84:1

NC 44-62

6 1/4

2 1/4

30 or 31

91

149.2

2.91:1

NC 46-62 (4 IF)

6 1/4

2 13/16

30 or 31

84

150

2.63:1

NC 46-65 (4 IF)

6 1/2

2 1/4

30 or 31

100

154.8

2.76:1

NC 46-65 (4 IF)

6 1/2

2 13/16

30 or 31

93

154.8

3.05:1

NC 46-67 (4 IF)

6 3/4

2 1/4

30 or 31

109

159.5

3.18:1

NC 50-70 (4-1/2 IF)

7

2 1/4

30 or 31

118

164.7

2.54:1

NC 50-70 (4-1/2 IF)

7 1/4

2 13/16

30 or 31

111

169.5

2.73:1

NC 50-72 (4-1/2 IF)

7 3/4

2 13/16

30 or 31

120

185.3

3.12:1

NC 56-77

8

2 13/16

30 or 31

140

190.1

2.70:1

NC 56-80

8 1/4

2 13/16

30 or 31

151

195.7

3.02:1

6-5/8 API Reg

9

2 13/16

30 or 31

162

212.6

2.93:1

NC 61-90

9 1/2

3

30 or 31

196

223.8

3.17:1

7-5/8 API Reg

9 3/4

3

30 or 31

217

232.8

2.81:1

NC 70-97

10

3

30 or 31

230

237.3

2.57:1

NC 70-100

10

3

30 or 31

243

237.3

2.81:1

*The number connection (NC ) is an API connection with the V- .065 thread form with a V- .038R thread root radius. 

The first two digits are the pitch diameter of the thread and the last two digits are the outside diameter of the drill collar.

 

Spiral Drill Collar

Technical specifications and parameters

Outside Diameter

Cutting depth

lead±25.4

mm

in

A(mm)

B(mm)

mm

86

3 3/8

3.5±0.79


679

98.4

3 7/8

4.0±0.79


914

101.6~111.1

4~4 1/8

4.8±0.79


914

114.3~130.2

4 1/2~5 1/8

5.6±0.79


965

133.4~146.1

5 1/4~5 3/4

6.4±0.79


1067

149.2~161.9

5 7/8~6 3/8

7.1±1.59


1067

165.1~177.8

6 1/2~7

7.9±1.59


1168

181.0~200.0

7 1/8~7 7/8

8.7±1.59

5.6±0.79

1626

203.2~225.4

8~8 7/8

9.5±1.59

6.4±0.79

1727

228.6~250.8

9~9 7/8

10.3±2.37

7.1±1.59

1829

254.0~276.2

10~10 7/8

11.1±2.37

7.9±1.59

1930

279.4

11

11.9±2.37

8.7±1.59

2032

 

 

Our main product drilling tools include: drill pipe, drill collar, heavy weight drill pipe, stabilizer, etc.


Company introduction

Xi'an KINGWELL OILFIELD MACHINERY Co., Ltd. (KINGWELL) is a highly reputable supplier for oilfield equipment and services to Oil & Gas industries and provides complete solutions.

With over 10 years developing, we were developed from the beginning drilling service to manufacture factory who produce OCTG, drilling tools, DST tools and Solid control products.

KINGWELL have experienced team, stronger enough to meet any challenge, we do believe honest is the base of business and cooperation; our aim is to build solid relationship with any part of honest. kingwell can provide highly efficient services to its clients resulting in accurate and timely deliveries at the best prices. Our products have been exported to Europe, American and Middle East.



Category: Drill Pipe/HWDP/Drill Collar

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