SYSTEM INTEGRATION TEST
Welltec® performed a system integration test (SIT) to determine the effect of the Well Stroker’s pull on the toolstring and if the high force from the Well Stroker® would break the fishing neck or release the plug from it.
For the SIT, the exact same fish components, including the plug, were set up in a horizontal tubing. During the test, the Well Stroker® stroked upwards six times, up to 100,000 lbs, releasing the slickline toolstring from the plug’s fishing neck. The ring of the fishing neck sheared from the third-party plug.
Welltec® mobilized equipment and personnel offshore after extensive pre-job planning with the client. The third-party overshot was installed on the fish using slickline. The Well Stroker® was then rigged up on e-line, run in hole, and latched onto the overshot. After only two strokes up to 100,000 lbs, the fish released from the plug. Similar to the SIT, the fish released cleanly from the fishing neck of the plug.
The Well Stroker® performed a successful fishing operation, recovering the stuck toolstring in one run. The tool accomplished it without breaking the fishing neck by applying the pull force incrementally in stages.
The simplicity of an e-line operation saved the client time and cost. CT or a workover rig would have required substantially longer lead and operational times and been significantly more expensive. The Well Stroker® operation on e-line took one week from mobilization to demobilization, whereas a CT fishing operation would have taken one month and a workover rig would have taken two months. The time saved also resulted in indirect cost savings for the client since the well would have remained offline longer for either of the other two operations.
This was the first time an e-line operation has performed a successful 100,000-pound fishing operation. The client was duly impressed and satisfied with the outcome.