Circulation Head with Union Female Sub Cementing Tools
Application of casing circulating head
Circulation head (circulation swage) a special joint used to circulate drilling fluid,conncting top the kely or drill pipe,the bottom connects to the casing are running or after.Depends on requests,there are drill pipe thread circulation head,casing thread circulation head,union thread circulstion head.Its top end connects to drill pipe via drill pipe thread,or connects to the hose,the bottom connects to casing joint via casing BTC(LTC/STC).
Features of circualting sub
Its upper ends is drill pipe box or union,the nether end is casing pin.It is a crossover(X/O) with hollow inside.
Nain body are made from heat threated alloy steel.Connected with union by internal and external argon are welding,high strength,resistance to high pressure,safety and reliability.
Confirmation when order:
1) Overall length and length of neck
2)Thread type of top end.
3)Thread type of bottom end.
Model:
Hammer union box sub * Casing thread pin
Hammer union box sub *Drill pipe pin
Drill pipe thread box*casing thread pin
Specification of the API circulating sub
Specification | OD/in | ID/in | Connection |
2 3/8 | 3 3/8 | 1 1/4 | 211 x 2" 1502 |
2 7/8 | 4 1/8 | 1 1/2 | 211 x 2" 1502 |
3 1/2 | 4 3/4 | 1 3/4 | 311 x 2" 1502 |
5 | 6 5/8 | 1 3/4 | 411 x 2" 1502 |
5 1/2 | 7 | 1 3/4 | 521 x 2" 1502 |
7 | 7 | 1 3/4 | 7BCSG P x 2" 1502 |
9 5/8 | 9 5/8 | 1 3/4 | 9 5/8 BCSG P x 2" 1502 |
13 3/8 | 13 3/8 | 1 3/4 | 13 3/8 BCSG P x 2" 1502 |
18 5/8 | 18 5/8 | 1 3/4 | 18 5/8 BCSG P x 2" 1502 |
20 | 20 | 1 3/4 | 20 BCSG P x 2" 1502 |
Circulation Head with Union Female Sub Cementing Tools
