Setting a critical well barrier in tubing with damaged nipple profiles 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

Retrieval of equipment lost in the well and fast-track production restart


Technical Challenge:

Retrieval of equipment lost in the well and fast-track production restart

Peak Solution:

Peak Power Jar, HD FRC pulling tool and non-releasable overshot


Major international oil company, Angola

Well Type:

5 ½-in oil producer (66 degree deviation at 2,977 m / 59.8 degree deviation at 2,039 m)

The Challenge:

While trying to mill a Parker sub at 2,562m using an e-line conveyed tractor and mill assembly, the toolstring became stuck. The e-line cable head weak point was pulled and all wire was recovered leaving a very expensive fish in the well with locked-in production.

The major task was to recover the high cost rental tractor and mill assembly stuck in the well so that milling operations could be resumed and the well returned to production.


There were delicate components to the tractor and mill assembly and jarring too hard too soon would potentially break the tools and make further fishing extremely difficult.

Prior to the fishing package deployment and in conjunction with a UK service company, Peak conducted several onshore acceptance tests to determine best grapple point and simulate the jarring/recovery operations. All of the tools were tested successfully and the Peak UHD package was utilized.


Peak designed, manufactured, and tested contingent recovery tools including a 4.5-in extended overshot to fish 4-in OD, also a 3.35-in non-releasable overshot to engage 1.46-in OD, and a 3.150-in non-releasable replacement rope socket to engage the 1-in Titan fish neck to facilitate heavy jarring.

A UK service company was mobilised to supply the Peak ultra-heavy-duty (UHD) fishing package with a Peak Well Systems' Specialist. Operations commenced and the Peak 3.35-in non-releasable overshot with dual heavy-duty fish neck (2.375-in - 2.5-in slips) was planted onto the fish. The Peak 2.6-in HD FRC pulling tool with 3.2-in integral bell guide was then run to engage the non-releasable overshot. At surface, the Peak Power Jar was set to fire at 1,500 lbs. The Power Jar was fired 37 times downhole and the tractor and mill assembly was recovered successfully.

Value to Customer:

All operations were carried out without delay or incident and the high cost rental tools were recovered, allowing the well intervention programme to be resumed, returning the well to production.


Product Codes: 220, 231