API 7 Non Magnetic Drill Collar for oil well drilling

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US $800-1,500 / Pieces | 10 Piece/Pieces (Min. Order)
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Overview
Quick Details
Standard:
API
Standard2:
API 5DP
Grade Group:
Cr-Mo alloy
Grade:
10CrMo910, 12Cr1MoV, 12Cr2Mo, 13CrMo44, 13CrMo45, 30CrMo
Thickness:
6.35 - 20 mm
Section Shape:
Round
Outer Diameter(Round):
114.3 - 508 mm
Place of Origin:
Shandong, China (Mainland)
Secondary Or Not:
Non-secondary
Application:
Oil Pipe
Technique:
Hot Rolled
Certification:
API
Surface Treatment:
Galvanized
Special Pipe:
API Pipe
Alloy Or Not:
Non-alloy
SupplyAbility
SupplyAbility:
400000 Ton/Tons per Year
Packaging & Delivery
Packaging Details
steel bundle.
Port
shanghai, qingdao, tianjin
Lead Time :
30days,depends on the exact qty

API 7 Non magnetic Drill Collar

 

 

Technical Parameter

 According to API Spec.7 and SY/T5144, the non-magnetic drill collars are made of low carbon stainless steel, which are researched and developed independently by our technical personnel. All threads are cold worked, and they are machined with CNC Lathes –Double –shouldered, including some special threads.
Non-magnetic Drill Collars Specifications
 
Connections
OD
ID
L mm
Shoulder
corner DF       mm
Strength ratio
mm
in
mm
in
NC23-31
79.4
3 1/8
31.8
1 1/4
9150
76.2
2.57:1
NC26-35
88.9
3 1/2
38.1
1 1/2
9150
82.9
2.42:1
NC31-41
104.8
4 1/8
50.8
2
9150 or 9450
100.4
2.43:1
NC35-47
120.7
4 3/4
50.8
2
9150 or 9450
114.7
2.58:1
NC38-50
127.0
5
57.2
2 1/4
9150 or 9450
121.0
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
NC46-62
158.8
6 1/4
71.4
2 13/16
9150 or 9450
150.0
2.63:1
NC46-65
165.1
6 1/2
57.2
2 1/4
9150 or 9450
154.8
2.76:1
NC46-65
165.1
6 1/2
71.4
2 13/16
9150 or 9450
154.8
3.05:1
NC46-67
171.4
6 3/4
57.2
2 1/4
9150 or 9450
159.5
3.18:1
NC50-67
171.4
6 3/4
71.4
2 13/16
9150 or 9450
159.5
2.37:1
NC50-70
177.8
7
57.2
2 1/4
9150 or 9450
164.7
2.54:1
NC50-70
177.8
7
71.4
2 13/16
9150 or 9450
164.7
2.73:1
NC50-72
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 5/8REG
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 5/8REG
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
254.0
10
76.2
3
9150 or 9450
237.3
281:1
8 5/8REG
279.4
11
76.2
3
9150 or 9450
266.7
2.84:1
 
Tolerances of Non-magnetic Drill Collar
 
OD
ID
ID
L
Shoulder
corner DF
 
mm
in
≤88.9
≤3 1/2
+1.2
0
+1.6
0
+152.4
±0.4
>88.9~114.3
>3 1/2~4 1/2
+1.6
0
>114.3~139.7
>4 1/2~5 1/2
+2.0
0
>139.7~165.1
>5 1/2~6 1/2
+3.2
0
>165.1~215.9
>6 1/2~8 1/2
+4.0
0
>215.9~241.3
>8 1/2~9 1/2
+4.8
0
>241.3
>9 1/2
+6.4
0
 
 
Mechanical Properties of Non-magnetic Drill Collar
 
OD
Yield Strength
 
σ0.2
MPa
Tensile
Strength
σb
MPa
Elongation
δ4
%
mm
in
79.4~171.4
3 1/8~6 3/4
≥758
≥827
≥18
177.8~279.4
7~11
≥689
≥758
≥20
 
Magnetic property(magnetic field =1×105/4πA/m)
1.      Relative permeability Ur<1.010
2.     Field gradient:ΔB≤0.05μT
 

 

Non-magnetic drill collar -2Non_magnetic_Drill_Collar_6No-Magnetic Drill Collarsdrill_collar_API

 

Process Flow Chart

 

 

 

 

Certification

 

 

 

Workshop

 

drill collar