After the casing is installed, it is connected with a circulation joint to provide fluid circulation.
According to needs, the circulation joint can be connected between the drill pipe and the casing, or between the casing and the hose
Technical Parameters:
Specification |
ID(mm) |
OD(mm) |
|
Drill Pipe Pin |
Casing tube |
||
NC38 |
5 BTC |
57 |
580 |
5 LTC |
|||
5 STC |
|||
NC38 |
5 1/2 BTC |
57 |
580 |
5 1/2 LTC |
|||
5 1/2 STC |
|||
NC50 |
7 BTC |
71 |
610 |
7 LTC |
|||
7 STC |
|||
NC50 |
9 5/8 BTC |
71 |
610 |
9 5/8 LTC |
|||
9 5/8 STC |
|||
NC50 |
10 3/4 BTC |
71 |
610 |
10 3/4 STC |
|||
NC50 |
13 3/8 LTC |
71 |
650 |
13 3/8 STC |