精選產品
聯絡資訊
NO 32 xiaojingyu street,taiyuan,shanxi,China
電話：86-035-6110680
傳真：86-035-6110680
spiral drill collar
產品型號：4145H
產品分類：自動化設備/產業機械 / 鋼管製造機 / 鋼管製造機
產品特色
The spiral drill collar is one of our product families. Three RH spiral grooves is made in outside surface of drill collar in order to reduce the contract area with the well face and the steering resistance, which can prevent differential pressure sticking. The weight of spiral drill collar is 4% lighter than drill collar of the same size. The shapes of both ends are the same as round drill collars. Spiral drill collars are classified into typeⅠand type Ⅱ according to the difference of spiral grooves.
產品規格
|
Drill Collars |
||||||
|
OD |
ID |
Connections |
31FT Collars |
|||
|
inch |
mm |
inch |
mm |
|
|
|
|
4-1/8 |
104.78 |
2 |
50.80 |
NC31,NC35 |
519 |
|
|
4-3/4 |
120.65 |
2 |
50.80 |
NC35, |
698 |
|
|
6-1/4 |
158.75 |
2-1/4 |
57.15 |
NC46(4 IF) |
1269 |
|
|
6-1/2 |
165.1 |
2-1/4 |
57.15 |
NC46(4 IF) |
1381 |
|
|
7 |
177.8 |
2-1/4 |
57.15 |
NC50(4 1/2IF) |
1632 |
|
|
8 |
203.2 |
2-13/16 |
71.44 |
6 5/8REG |
2092 |
|
|
9 |
228.6 |
2-13/16 |
71.44 |
7 5/8REG |
2720 |
|
|
9-1/2 |
241.3 |
3 |
76.20 |
7 5/8REG |
3069 |
|
|
10 |
254 |
3 |
76.20 |
NC70 |
3390 |
|
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