Circulating Sub
Application:
The Circulating Sub is connected between wellhead pipe string and ground circulating system. When casing is running or completed, the circulating sub can be connected to provide fluid circulation.
According to the application, circulating sub is connected between Kelly and casing or between casing and a hose.
Construction:
The circulating sub during running casing is equipped with casing pin thread on one end and DP thread, DP box thread or union thread on the other.
Type of circulating sub:
Circulating Sub With Drill Pipe Thread
Circulating Sub With Hammer Union Thread
Specifications - Circulating Sub With Drill Pipe Thread
1 Circulating Sub With Drill Pipe Thread NC38 5 BTC 57 580
2 Circulating Sub With Drill Pipe Thread 5 LTC
3 Circulating Sub With Drill Pipe Thread 5 STC
4 Circulating Sub With Drill Pipe Thread NC38 5 1/2 BTC 57 580
5 Circulating Sub With Drill Pipe Thread 5 1/2 LTC
6 Circulating Sub With Drill Pipe Thread 5 1/2 STC
7 Circulating Sub With Drill Pipe Thread NC38 7 BTC 71 610
8 Circulating Sub With Drill Pipe Thread 7 LTC
9 Circulating Sub With Drill Pipe Thread 7 STC
10 Circulating Sub With Drill Pipe Thread NC38 9 5/8 BTC 71 610
11 Circulating Sub With Drill Pipe Thread 9 5/8 LTC
12 Circulating Sub With Drill Pipe Thread 9 5/8 STC
13 Circulating Sub With Drill Pipe Thread NC50 10 3/4 BTC 71 610
14 Circulating Sub With Drill Pipe Thread 10 3/4 STC
15 Circulating Sub With Drill Pipe Thread NC50 13 3/8 BTC 71 650
16 Circulating Sub With Drill Pipe Thread 13 3/8 STC
Specifications - Circulating Sub With Hammer union Thread
1 Circulating Sub With Hammer union Thread 2″1502 Union 5 BTC 50.8 500
2 Circulating Sub With Hammer union Thread 2″1502 Union 5 1/2 BTC 50.8 500
3 Circulating Sub With Hammer union Thread 2″1502 Union 7 BTC 50.8 500
4 Circulating Sub With Hammer union Thread 7 LTC
5 Circulating Sub With Hammer union Thread 2″1502 Union 9 5/8 BTC 50.8 500
6 Circulating Sub With Hammer union Thread 9 5/8 LTC
7 Circulating Sub With Hammer union Thread 2″1502 Union 10 3/4 BTC 50.8 560
8 Circulating Sub With Hammer union Thread 10 3/4 STC
9 Circulating Sub With Hammer union Thread 2″1502 Union 13 3/8 BTC 50.8 610
10 Circulating Sub With Hammer union Thread 13 3/8 BTC
