Isolation Valve Cleanup Subs
Remove debris above ball-type isolation valves
Clean up isolation valves with jetting or circulation subs to reduce the risk that debris will hinder valve operation.
The TIVF flapper-seal tubing isolation valve is typically run below the production packer with the production tubing string. It allows automatic filling of the tubing, multiple completion pressure tests before and after setting the packer, annulus fluid circulation, and hydraulic setting of the packer before cycling open to allow fullbore through-tubing access—all without intervention.
The valve is opened using a modified version of the Trip Saver one-time remote-opening mechanism. By eliminating six or seven intervention runs, the TIVF valve saves significant completion time, which is especially beneficial in horizontal wells, where intervention with wireline or coiled tubing adds considerable risks and costs.
As a contingency, the valve can also be operated with a mechanical shifting tool run on the end of a workstring or coiled tubing string.
Effective well control with unsurpassed reliability and interventionless actuation.
Schlumberger isolation valve combination saves rig time and USD 1 million per well.
The TIVF flapper-seal tubing isolation valve is run with the upper completion to enable interventionless autofilling of the tubing, multiple completion pressure tests, annulus fluid circulation, and hydraulic setting of the packer before cycling open to allow fullbore through-tubing access.