Definition:
Multicycle Circuating Valve with Lock module (see comment!)
Subject Area 1:
A tool
Remarks:
The multicycle circulating valve with lock (MCVL) module is a reclosable circulating and reversing valve. Applying a predetermined number of pressure cycles to the tubing opens the valve. The MCVL cycles by the differential pressure between the tubing and annulus, and it is not dependent on pump rate. The valve can be locked in the open or closed position by using the lock module. When the lock is engaged, the tool is insensitive to pressure surges in the tubing and annulus. Applying pressure to the annulus ruptures a disc and disengages the lock module. The model MCVL-E valve is rated to 68,950 kPa [10,000 psi] differential pressure, and the model MCVL-G is rated to 103,425 kPa [15,000 psi].