Liner Tie-Back Receptacle AISI 4140 80KSI
Liner Tie-Back Receptacle is connected to the uppermost end of the hanger through thread and is used to plug back the used for cementing.
After the liner hanger is suspended, the tie back barrel is used when it is necessary to tie back the cementing.
Tie Tie Back Receptacle as the name suggests, it can connect the tail pipe back to the wellhead. For example, if the cementing pipe fails to be inserted into the formation, the new casing can be connected back,
The connection is a special cementing tool connected to the top of the liner, and the hanger is connected below. Generally, after cementing the liner of a gas well, the casing shall be connected back to the wellhead, and the bottom of the return casing shall be connected with the insertion head matched with the return barrel. There is a sealing ring on the insertion head. When the return casing is down to the top of the return barrel, start the pump and circulate to record the pump pressure Then stop the pump and lower it slowly. After observing the reduction of suspended weight, mark the wellhead with a pressure of about 10t, then start the pump slowly and hold the pressure of about 15MPa to check the tightness of the return barrel, then put forward the plug for circulating cementing, and insert the plug into the return barrel after solid completion. It is OK to simply put it at the marked position.
