Details
China Equipment goods
Equipment goods

AISI 4145H material,nc35-47,4 3/4''OD,2''ID, drill collar

Quick Details

  • Place of Origin: China (Mainland)
  • Brand Name: Senwell
  • Type: Drill Collar
  • Machine Type: Drilling Tool
  • Certification: API
  • Material: Alloy steel
  • Processing Type: Forging
  • Use: Well Drilling
  • Standard: API

Packaging & Delivery

Packaging Details: packing is according to customers' requirements
Delivery Detail: 10-30 Days

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Usage: Drill collars are used to provide weight on bit so that drill are kept in tension. Especially drill collars can keep drill bits centralized and hole track by large rigidity

Material: AISI 4145H, 4145H Mod and Non-magnetic material.

Standard: API Spec7, API Spec7-1 and SY/T Standard. ALSO WE CAN SUPPLY DS-1 and NS-1 STANDARD.

Type: Slick drill collar

Spiral drill collar

Non-magnetic material.

Hard band: Arnco100XT, Arnco200XT and Arnco300XT; Botn1000, Botn3000, TCS8000, TCS-Titanium, Armacor M etc. Also we can make according to customers' requirements.

Size: OD: 3 1/8”~~11”; ID: 1 1/2”Min. Length: 10'~~31'

Detail specification

Standard size ,bores and connection for Drill Collar

Style of connection

OD

ID

Length

Bevel

Bending strength Ratio

mm

in

mm

in

mm

diameter mm

NC23-31

79.4

3 1/8

31.8

1 1/4

9150

76.2

2.57: 1

NC26-35(23/8IF)

88.9

3 1/2

38.1

1 1/2

9150

82.9

2.42: 1

NC31-41(27/8IF)

104.8

4 1/8

50.8

2

9150

100.4

2.43: 1

NC35-47

120.7

4 3/4

50.8

2

9150

114.7

2.58: 1

NC3850(31/2IF)

127.0

5

57.2

2 1/4

9150

121.0

2.38: 1

NC44-60

152.4

6

57.2

2 1/4

9150or9450

144.5

2.49: 1

NC44-62

158.8

6 1/4

57.2

2 1/4

9150or9450

149.2

2.91: 1

NC46-62(4IF)

158.8

6 1/4

71.4

2 13/16

9150or9450

150.0

2.63: 1

NC46-65(4IF)

165.1

6 1/2

57.2

2 1/4

9150or9450

154.8

2.76: 1

NC46-65(4IF)

165.1

6 1/2

71.4

2 13/16

9150or9450

154.8

3.05: 1

NC46-67(4IF)

171.4

6 3/4

57.2

2 1/4

9150or9450

159.5

3.18: 1

NC50-67(41/2IF)

171.4

6 3/4

71.4

2 13/16

9150or9450

159.5

2.37: 1

NC50-70(41/2IF)

177.8

7

57.2

2 1/4

9150or9450

164.7

2.54: 1

NC50-70(41/2IF)

177.8

7

71.4

2 13/16

9150or9450

164.7

2.73: 1

NC50-72(41/2IF)

184.2

7 1/4

71.4

2 13/16

9150or9450

169.5

3.12: 1

NC50-77

196.8

7 3/4

71.4

2 13/16

9150or9450

185.3

2.70: 1

NC50-80

203.2

8

71.4

2 13/16

9150or9450

190.1

3.02: 1

6 5/8REG

209.6

8 1/4

71.4

2 13/16

9150or9450

195.7

2.93: 1

NC61-90

228.6

9

71.4

2 13/16

9150or9450

212.7

3.17: 1

7 5/8REG

241.3

9 1/2

76.2

3

9150or9450

223.8

2.81: 1

NC70-97

247.6

9 3/4

76.2

3

9150or9450

232.6

2.57: 1

NC70-100

254.0

10

76.2

3

9150or9450

237.3

2.81: 1

8 5/8REG

279.4

11

76.2

3

9150or9450

266.7

2.84: 1

Mechanical Property of Drill Collar

OD

Yield Strength

Tensile Strength

Elongation

Brinell Hardness HB

Charpy

mm

in inch

σ 0.2 Mpa

σ b Mpa

4%

AKVJ

79.4-171.4

3 1/8-6 3/4

≥758

≥965

≥13

285-341

≥54

177.8-279.4

7-11

≥689

≥930

Stress Relief Groove for Thread Connection

Style of Connection

Length between Inner Thread Shoulder and the last Dens

Diameter of Inner Thread

Taper of the Hole nest to inner Thread

Outer Thread Diameter

Length between alternative Inner Thread Shoulder and Stress Relief Groove

±1.59mm

Dcb+0.40,-0

±20.83

DRG+0 -0.79

LRG +0 -3.18

mm

mm/m

mm

mm

NC35

82.6

82.15

166.67

82.15

85.73

NC38(3 1/2IF)

88.9

88.11

166.67

89.3

92.08

NC44

101.6

101.6

166.67

106.36

104.78

NC46(4IF)

101.6

106.76

166.67

109.93

104.78

NC50(4 1/2IF)

101.6

117.48

166.67

120.65

104.78

NC56

114.3

121.84

250

134.14

117.48

NC61

127

132.95

250

149.25

130.18

NC70

139.7

152

250

171.05

142.88

6 5/8REG

114.3

134.14

166.67

137.72

117.48

7 5/8REG

120.7

133.35

250

162.72

123.83

8 5/8REG

123.8

149.25

250

184.94

127

Note: The connection of NC23,26,31 and 2 3/8IF are without stress relief groove mould for their thin wall.

More details of products,you are welcome to contact us by mail,thanks!

Packaging & Shipping

Standard exporting package by Senwell or according to customers' request

Shipping: China main port (Tianjin & Shanghai for selection)

Our Services

Our Services

1.Advanced equipment and techniques

2. Customized design

3.High quality products and the best services to meet the strict needs of our customers

4Our business philosophy of "people-oriented, customer first and reliability first"

5. Long-term cooperative relationships with more than a hundred famous and large manufacturers in China

6. Successfully exported to Europe, America, the Middle East, South Africa and Southeast Asia

7.Warranty

Company Information
Shaanxi Senwell Drilling Equipment Co., Ltd. (SENWELL) is a comprehensive corporation, of which the business scope is manufacture, trade and sale. SENWELL is located in the center of the high development district which is in the east of Xi'an, Shaanxi Province. Supported by abundant technology resources of the high development district, our company is engaged in designing, researching & developing, testing and manufacturing oilfield equipment and providing relative services.

SENWELL's main products cover 220 types and more than 1000 specifications presently. Our business covers non-magnetic products, drilling stem tools, fishing tools, jarring tools, coring tools, cementing tools, milling tools, well head tools, accessory tools, downhole tools, oil mining equipment, drill equipment, well control systems and .

Today, with strong technology and profuse experience, SENWELL not only provides a comprehensive range of oilfield tools, but also provides tools for machinery industry and has decades of production experience. Main products are sand casting, investment casting, forging, centrifugal casting and machining equipment.

We have a great deal of outstanding and seasoned employees. Relying on advanced equipment and techniques, with the scientific management theory and spirit of "seriously dealing with matters relating to works", we have established long-term cooperative relationships with more than a hundred famous and large manufacturers in China. Our company creates a steady-going and reliable environment for our product research, development and sale.

We are based on the tenet of "providing consistent high quality products and the best services to meet the strict needs of our customers; to create value for our customers and provide our customers with a return on their investment" and the business philosophy of "people-oriented, customer first and reliability first". Our products have been successfully exported to Europe, America, the Middle East, South Africa and Southeast Asia. In the international market, we have acquired an excellent reputation among the clients.

We welcome new and old customers from all over the world to contact us for future business relationships and achieving mutual success! To benefit from our strong OEM/ODM capabilities and considerate services, contact us today. We believe you will be better with our support!

Trade Shows

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Certifications

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FAQ

Please get back to my email address or call me:

You can provide us the following information.

1.Size,

2.Outer diameter,

3.IADC Code

4.Quantity

If you have any question,please feel free to contact me at any time!

Location : Rm1623,Unit 1,No.2 Building, I-City of the Greenwich, No.11 Tangyan South Road, High-Tech District, Xi'an City, Shaanxi Province,China , 710065 xi'an,
Contact : lily jing, 0086 29 85370919

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