Exceeds API Spec 19V V3 and ISO 28781 V3
The MFIV-II™ mechanically controlled isolation valve is a cost-effective solution that enhances completion efficiency by providing a bidirectional barrier that can be mechanically opened and closed multiple times. It enables operators to transition seamlessly from the lower to the upper completion. Used widely in stand-alone screen completions, intelligent completions, gravel-pack systems, and workovers (including for ESP changeout), the valve prevents formation damage during upper completion deployment and reduces operational risk by isolating reservoir fluids.
The MFIV-II valve is opened and closed with a shifting tool run on the end of washpipe, a perforating string, or coiled tubing. When the tool passes through the valve, it engages the shifting profile and the ball closes or opens the valve. Subsequently the shifting tool unlatches from the latch collet of the valve and is retrieved together with the washpipe. Two tools are available. The STC-6 shifting tool has an optimized ID for maximum flow rate through the tool, while the STR-6 tool has a smaller OD to enable it to pass through restrictions in the completion string. An emergency release mechanism is also available.
Wireline actuation with real-time confirmation is available through our ReSOLVE™ instrumented wireline intervention service.
The MFIV-II valve benefits from a qualification procedure that exceeds API Spec 19V V3 and ISO 28781 V3 requirements. The barrier is qualified with gas to a zero-bubble leak rate, which satisfies the requirements for using the valve as a barrier for well intervention operations and well suspension.
