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Jinan Tianwei Innovation Oilfield Equipment Enterprise (OEE)
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Drill collar

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Jinan Tianwei Innovation Oilfield Equipment Enterprise (OEE)
Jinan Tianwei Innovation Oilfield Equipment Enterprise (OEE)
City: Ji
Province/State: Shandong
Tel: 86-531-67811566
Contact Person:
Aily AI

Drill collar

Place of Origin : Qingdao
Brand Name : OEE
Payment Terms : TT
Contact Now

OEE Drill Collar has been approved by the NS-1 certification, it is manufactured from 4145H modified quenched and tempered steel, strict metallurgical specifications are followed to insure that full length heat treating produces a consistent maximum depth of hardness.

Features and Benefits

A hardness range of 285 to 341 BHN and a Charpy impact value of 40 ft-lbs are guaranteed at evenly distributed 16 points in any sections at room temperature;

Connections are completed(phosphate coated)to protect them from the elements after machining and to help prevent galling upon initial make-up;

Thread roots are cold rolled on API and H-90 connections;

Pressed steel thread protectors are supplied for all drill collar that are equipped with standard connections


Miss Aily Ai

International Sales Consultant

JINAN TIANWEI INNOVATION OILFIELD EQUIPMENT ENTERPRISE (OEE)

JINDING INTERNATIONAL TRADE DEVELOPMENT LTD. (ITD)

twcxoil(at)china-ck.com

oee.twcxoil(at)china-ck.com

MSN: oee-aily(at)hotmail.com

Skype: oee-Aily

Add: No.13 Shunshi Road, Jinan Shandong, China. Post Code: 250002

TEL: 0086-531-67811566FAX: 0086-531-67811577 Call: +0086.18706417140


Number and connection table

Outside Diameter

Inside Diameter

Length
mm 

Bevel
Diameter
mm

Bending
Strength
Ratio

mm

in

mm

in

NC23-31

79.4

3 1/8

31.8

1 1/2

9150

76.2

2.57:1

NC26-35(2 3/8 IF)

88.9

3 1/2

38.1

1 1/2

9150

82.9

2.42:1

NC31-41(2 7/8 IF)

104.8

4 1/8

50.8

2

9150

100.4

2.43:1

NC35-47

120.6

4 3/4

50.8

2

9150

114.7

2.58:1

NC38-50(31/2IF)

127

5

57.2

2 1/4

9150

121

2.38:1

NC44-60

152.4

6

57.2

2 1/4

9150 or 9450

144.5

2.49:1

NC44-60

152.4

6

71.4

2 13/16

9150 or 9450

144.5

2.84:1

NC44-62

158.8

6 1/4

57.2

2 1/4

9150 or 9450

149.2

2.91:1

NC44-62(4IF)

158.8

6 1/2

71.4

2 13/16

9150 or 9450

150

2.63:1

NC44-65(4IF)

165.1

6 1/2

57.2

2 1/4

9150 or 9450

154.8

2.76:1

NC44-65(4IF)

165.1

6 1/2

71.4

2 13/16

9150 or 9450

154.8

3.05:1

NC44-67(4IF)

171.4

6 3/4

57.2

2 1/4

9150 or 9450

159.5

3.18:1

NC50-67(41/2IF)

171.4

6 3/4

71.4

2 13/16

9150 or 9450

159.5

2.37:1

NC50-70(41/2IF)

177.8

7

57.2

2 1/4

9150 or 9450

164.7

2.54:1

NC50-70(41/2IF)

177.8

7

71.4

2 13/16

9150 or 9450

164.7

2.73:1

NC50-72(41/2IF)

184.2

7 1/4

71.4

2 13/16

9150 or 9450

169.5

3.12:1

NC56-77

196.8

7 3/4

71.4

2 13/16

9150 or 9450

185.3

2.70:1

NC56-80

203.2

8

71.4

2 13/16

9150 or 9450

190.1

3.02:1

6 5/8 REG

209.6

8 1/4

71.4

2 13/16

9150 or 9450

195.7

2.93:1

NC61-90

228.6

9

71.4

2 13/16

9150 or 9450

212.7

3.17:1

7 5/8 REG

241.3

9 1/2

76.2

3

9150 or 9450

223.8

2.81:1

NC70-97

247.6

9 3/4

76.2

3

9150 or 9450

232.6

2.57:1

NC70-100

254

10

76.2

3

9150 or 9450

237.3

2.81:1

8 5/8 REG

279.4

11

76.2

3

9150 or 9450

266.7

2.84:1

Slips and elevator grooves can be produced upon the customers' requirement.



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