Freeze and Hot Tap Case History #12
Objective: Remove malfunctioning orbit valve and install rig BOPs.
Well Information: 5,600kPa sweet gas well. After rigless fracture stimulation orbit valve does not open properly.
Procedure: Install cribbing and dry ice on casing. Rig up pumping equipment and pressure test. Inject gel into casing and produce a freeze plug. Pressure test plug, remove orbit valve and install BOPs. Pressure test BOPs, maintain well pressure above plug and thaw.
Time on location: 12 hours