Well Stroker® restores wellbore access

JANG173764 Well Stroker® pushes stuck fish to safe depth
  • Well type Injector
  • Max. temperature 255°F (123.9°C) at 10,148 ft
  • Bottom-hole pressure 5,330 psi at 10,148 ft
  • Max. deviation 31°


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.


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 11,536 ft 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 11,632.5 ft MD. Then, a single downstroke pushed the fish to 11,715 ft MD, at no-go, below the lowermost WIM, achieving the client’s desired depth.


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.