RTTS Circulating Valve

RTTS Circulating Valve is a locked-open/locked-closed valve that serves as both a circulating valve and bypass. The clearance between the RTTS packer (or any hook wall packer) and the casing ID is relatively small. To reduce the effect of fluid-swabbing action when the tool is run in or pulled out of the hole, a packer bypass is generally used. 

RTTS Circulating valve is the retrievable circulating valve designed with a full bore feature. The RTTS circulating valve is a part of the drill stem testing string used for well testing service and flow operation. The circulating valve is with a locked-open/locked-closed valve, so the circulating valve serves as both a circulating valve and bypass.

Operation of RTTS Circulating Valve

The Multifunctional circulating valve is automatically locked in the closed position when the packer is set. During testing and squeezing operations, the lock helps prevent the valve from being pumped open. A straight J-slot in the locked-open position can be used with the straight J-slot(optional) in the packer body. This combination eliminates the need to turn the tubing to close the circulating valve or reset the packer after the tubing has been displaced with cement.