WELL STROKER® PUSHES STUCK FISH TO SAFE DEPTH

Background

In August of 2017, an operator commissioned a slickline kick-off toolstring to run in hole and pull an equalizing prong from a dummy valve installed in a WIM. While pulling out of the hole with the equalizing prong, the toolstring stacked above the WIM at 11,525 ft MD.

Slickline attempted several times to retrieve or push the fish without success. A lead impression block tagged the fish at 11,536 ft MD. The operator then requested Welltec® to provide a solution to push or fish the stacked toolstring. Welltec® proposed using the Well Tractor® and Well Stroker® to push the toolstring to the top of the no-go.

OPERATION

After performing a systems integration test for the new cable, the operation proceeded. The plan consisted of one main run and two contingency runs; however, the operation was successfully performed over two main runs.

During the first run, the combined  Well Tractor® 218/ Well Stroker®218, with a 2.53” OD blind box, was run in hole and tagged the fish at 11,536ft MD. After performing correlation passes and placing the tools at depth, the Well Stroker exerted three down strokes, moving the fish to 11,632.5 ft MD.

During the second run, a  Well Tractor® 218/ Well Stroker® 218, again with a 2.53” OD blind box, tagged the fish at 11,632.5ft MD. Then, a single downstroke pushed the fish to 11,715ft MD, at no-go, below the lowermost WIM, achieving the client’s desired depth.

ACHIEVEMENTS

Welltec® successfully developed a solution to push the stuck fish to the top of the no-go using the Well Tractor® and Well Stroker®, so that the operator could continue carrying out future operations safely. Two runs were made in less than 48 hours to achieve the client’s objective.

After the initial rig up, the subsequent rig up and rig down were fast and time-saving while maintaining stringent safety practices. The client was very satisfied with the results. This operation shows the ingenuity of Welltec’s team in deploying tools to achieve client objectives.

WELL TYPE: INJECTOR
MAX. TEMPERATURE: 255°F (123.9°C) at 10,148 ft
BOTTOM-HOLE PRESSURE: 5330 psi at 10,148 ft
MAXIMUM DEVIATION: 31°

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