Piston was contacted to propose a fishing plan. Piston rig 9 was mobilized and rigged up with 10 BOPs to provide redundancy and a means of securing the coil. Surface pressure was 28mpa with a column of fresh water. The workstring chosen was 2 7/8 slh90ht with 3-1/8 tooljoints. This was not the strongest choice but the slimmest to provide good annular velocity and allow debris to pass through the restricted ID of the patch.
The first run was a dressing mill to clean up the fishtop, then a 3-5/8 overshot with high pressure packoff was snubbed into the well with tkr plugs in the profiles. The string was latched and plugs were removed with slickline. A circulation rate was established through the stalled motor - 220lpm @ 84 mpa. 15k E-Line was sourced for the free pointing operations, and pumped to within 5m of the motor head assembly (MHA). It was determined that the string was free to that point. A jet cutter was pumped to 5m above the MHA, and the string was separated , slickline reset the plugs in the workstring and the string and fish was pulled 100m from surface. Slickline plugs were removed and slickline ran a gauge ring into the coil. Slickline was rigged out and e line was rigged in. Two permanent plugs were set in the bottom of the coil. After negative testing the plugs the string was hoisted and the coil was secured in the slip rams. The snubbing jack and work window were rigged out and coil tubing injector dimple to dimple connected to the fish. After connecting the coil tail to the fish, the injector was bolted down to the snubbing BOPs and the connector was pull tested. The stack was equalized with the pump above the slip rams to the injector, slip rams were opened and the connector was reeled out of hole. Once the connector reached the reel, chains were welded along the connector as a safety device in case the coil snapped due to the rigidity of the connector. The coil fish was then reeled out of the well. The snubbing jack was then spooled up to house the fishing tools and fish. A washpipe run was made to clean the debris from around the fish. When the washpipe was snubbed out, it was found that the disconnect and the 5m piece of coil had become stuck in the washpipe. An overshot was then made up and snubbed in the hole, latched onto the motor and bit, and jarred free. Once the fish was out of the hole, another motor and 94mm junk mill were made up to the work string. The remaining plugs were milled out without hole cleaning issue due to the string being spun at 120rpm, leaving no debris laying on low side of well. The well was milled to TD at 6200m, the string was pulled from well, a velocity string snubbed to the heel and the unit was rigged out.