Well-Safe Solutions Recovers 11,575 ft of Slickline Lost in a Well After 15 Years Collection of data with minimal pressure loss in flowing wells Contingency barrier option on high-value subsea wells Recovery of magnetic junk in high temperature wells Hard scale removal at multiple obstruction points Retrieval of equipment lost in the well and fast-track production restart High deviation, heavy-duty fishing, North Sea Recovery of safety valve lockout tool which had parted downhole Retrieval of sub-surface safety valve (SSSV) with damaged fish neck Retrieval of injection valve backed off from 7-in retrievable bridge plug Trial deployment of slickline-set SIM plugs and Peak latch/seal micro coil stinger Data acquisition to monitor pressure buildup in a shut-in well Bespoke activation tool design Evaluation of an e-line deployed tractor, stroker, and slickline toolstring Trial test to remove hard scale from production tubing using mechanical means Cut wire at rope socket to retrieve stuck toolstring Retrieval of injection valve from tubing crossover at 10,400 ft High-deviation fishing at depth in the Middle East Isolation of failed inflow valve at high deviation Location and stabilization of a leak path in the completion string Innovative use of an LWIV to perform first subsea slickline intervention in Nigeria Efficient straddle solution enables repair of production Christmas tree Permanent plug keeps P&A project moving Peak eCutter facilitates faster stuck toolstring recovery in long-reach, highly-deviated well Retrievable sand screen anchoring system eliminates leaks Mechanical scale removal saves USD 250,000 PTTEP gas lift straddle conversion restores oil production for mature well Slickline-deployed plug isolates damage to avoid workover KOC restores oil production to 800 bbl/d using digital-slickline-conveyed straddle system D-Set setting tool and DSL digital slickline cable set large-bore gauge hanger in monobore well Retrievable bridge plug enables proper tubing cut and saves 4 rig days, Congo Remote Intervention Operation Enables Effective Planning of Plug and Abandonment Campaign > Shell Removes 900-ft Parted Wireline from North Sea Well Setting a Critical Well Barrier in Tubing with Damaged Nipple Profiles

Shell Removes 900-ft Parted Wireline from North Sea Well

Shell used a heavy-duty fishing package by Peak Well Systems, a Schlumberger company, to clean up approximately 900 ft of parted wireline and a stuck toolstring during P&A operations of its Brent Charlie Platform offshore UK. The cleanup was successfully completed over 4 operational days.


Clear 900 ft of parted digital slickline (DSL) wire and stuck toolstring from inside an offshore well

During P&A operations on its Brent Charlie Platform, Shell needed to pull a safety valve that was not functioning correctly. When the flapper of the valve was moved off seat, pressure released from below it, which

caused the DSL wire being used to part downhole. This resulted in approximately 900 ft of 0.153-in parted wireline and a slickline toolstring being left in the well above the safety valve. Operations were shut down until an acceptable fishing plan was put in place. The fishing plan would be challenging due to limited deck space, working height, and
safe working load limits on a small-footprint hydraulic workover unit.

Carefully select a heavy-duty (HD) fishing tool package

Peak Well Systems worked closely with the operator to select a fishing tool package that would deliver a high degree of certainty that the fish could be recovered in the challenging environment. Given the hydraulic workover unit’s 5,000-lbf safe working load limit, the normal practice of using ultraheavy-duty 5/16-in wireline for the fishing operation was not an option. Additionally, tool selection and placement of wireline valves to ensure containment within the confines of the restricted height was critical.

Peak Well Systems recommended a 7/32-in braided cable with a fishing package containing a 2½-in HD power jar and high-load accelerators that could deliver up to 100,000 lbf. The package also included specialist wireline retrieval systems, long-reach HD releasable overshots, HD fullradial-contact pulling tools, and HD releasable spears.

Removed fish in 4 operational days

Under the close supervision of Peak Well Systems’ HD fishing specialists, the entire 900 ft of DSL wireline and toolstring was recovered over the course of 4 operational days. The largest single recovery was about 150 ft of wireline. The toolstring and GS pulling tool were wrapped in the remaining DSL wire, requiring diligent supervision to safely recover them through the production system and enable proper closure and containment. With the entire fish recovered, a confirmation sweep run in the tubing above the safety valve was performed to ensure that no wire remained. This run was conducted using the 7/32-in braided cable and 2½-in HD toolstring.


Product Codes: 220