API 4145H NC44-62 oil drilling spiral 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:L/C, T/T, WUDelivery Date:10~30 days
Min. Order:1 Piece/Pieces
Means of Transport:Ocean, Air, Land

Introduction

Usage: Drill collars are used to provide weight on bit so that drill pipes 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.

 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

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.

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


Heavy weight drill pipe 


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

Related Category: Drill Stabilizer and Stabilizer Forging  Drill Tools