| Place of Origin: | China (Mainland) |
|---|---|
| Brand Name: | Weigao |
| Model Number: | spiral drill collar |
| Forging : | Carbon Steel |
Quick Details
Specifications
Descriptions:
Drill collars is one of the most important product of hexin oil drillings which mainly used to provide bit weight to drill so that drill pipe is in tension. Especially drill collar can keep drill bit centralized and hole track by large rigidity. GANG GONG brand drill collars are manufactured strictly from API Spec7-1 standard.
|
Type
|
OD(mm)
|
ID(mm)
|
L(m) ±152.4mm d
|
DF(mm) ±0.4
|
|
NC23-31
|
79.4
|
31.8
|
9.14
|
76.2
|
|
NC26-35
|
88.9
|
38.1
|
9.14
|
82.9
|
|
NC31-41
|
104.8
|
50.8
|
9.14or9.45
|
100.4
|
|
NC35-47
|
120.6
|
50.8
|
9.14or9.45
|
114.7
|
|
NC38-50
|
127
|
57.2
|
9.14or9.45
|
121
|
|
NC44-60
|
152.4
|
57.2
|
9.14or9.45
|
144.5
|
|
NC44-60
|
152.4
|
71.4
|
9.14or9.45
|
144.5
|
|
NC46-62
|
158.8
|
57.2
|
9.14or9.45
|
149.2
|
|
NC46-62
|
158.8
|
71.4
|
9.14or9.45
|
150
|
|
NC46-65
|
165.1
|
57.2
|
9.14or9.45
|
154.8
|
|
NC46-65
|
165.1
|
71.4
|
9.14or9.45
|
154.8
|
|
NC46-67
|
171.4
|
57.2
|
9.14or9.45
|
159.5
|
|
NC50-70
|
177.8
|
57.2
|
9.14or9.45
|
164.7
|
|
NC50-70
|
177.8
|
71.4
|
9.14or9.45
|
164.7
|
|
NC50-72
|
184.2
|
71.4
|
9.14or9.45
|
169.5
|
|
NC56-77
|
196.8
|
71.4
|
9.14or9.45
|
185.3
|
|
NC56-80
|
203.2
|
71.4
|
9.14or9.45
|
190.1
|
|
6-5/8REG
|
209.6
|
71.4
|
9.14or9.45
|
195.6
|
|
NC61-90
|
228.6
|
71.4
|
9.14or9.45
|
212.7
|
|
7-5/8REG
|
241.3
|
76.2
|
9.14or9.45
|
223.8
|
|
NC70-97
|
247.6
|
76.2
|
9.14or9.45
|
232.6
|
|
NC70-100
|
254
|
76.2
|
9.14or9.45
|
237.3
|
|
8-5/8REG
|
279.4
|
76.2
|
9.14or9.45
|
266.7
|
|
NC50-67
|
171.5
|
71.4
|
9.14or9.45
|
159.5
|