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

High-deviation fishing at depth in the Middle East


Technical Objective:

High-deviation fishing at depth in the Middle East.


Offshore, Middle East.


National oil company.

Well Type:

High deviation (64 degrees) and extended reach to over 9,000 ft.


Rollerized Peak Cutter nonexplosive wireline cutter and high-deviation toolstring consisting WellGlide roller-centralizer subs, Power Jar, Linear Jar, and Accelerator.

The Challenge:

Whilst trying to break a ceramic disk at 9,173 ft and 64 degree deviation, a customer encountered difficulties in reaching the required depth and the toolstring became stuck downhole.

A third party wire cutter was mobilized to free the toolstring but was unsuccessful in its attempt due to the challenges posed by the high deviation.

A wire cutter and fishing toolstring, able to operate reliably at depth and deviation, was required.


Minimizing lost rig time was a priority for the customer. A prompt solution that would cut cleanly on the first attempt, under difficult circumstances, was crucial.

In addition, the well needed to be secured efficiently to enable the fishing operation to recover the stuck toolstring without delay.

Peak’s Solution:

Peak was able to address the problems attributed to the high deviation of the well by offering friction-reducing well intervention tools.

Within four hours of request, a 2.8-in rollerized Peak Cutter had been mobilized and specialist training provided to the customer’s well intervention team. Peak’s rollerized Cutter was deployed via 0.125-in slickline and reached the top of the fish at 9,173 ft in approximately two minutes. The wire was cut successfully on the first attempt and the rollerized Cutter was retrieved to the surface, along with the cut wire.

To recover the stuck toolstring, Peak proposed and designed a 2.125-in high-deviation fishing toolstring with WellGlide roller-centralizer sub to meet the difficult well conditions.

WellGlide can be positioned along the length of the toolstring, to lift the body and the weight of the string, upon the axles of the rollers incorporated within the roller subs. This eliminates any friction between the toolstring body and the tubing wall, thus making it perfectly suited to deploying toolstring in highly-deviated wells.

This solution was promptly commissioned and mobilized within two days. The customer was able to free the stuck toolstring with four hits of Peak’s Power Jar and recover it to the surface. The operation was completed within six hours.

Value to Customer:

Well program activity was resumed quickly with minimal lost time incurred. Peak was able to provide a competent and efficient solution in the form of a rollerized cutter which was able to reach considerable depths in deviation and cut the wire with minimal momentum using stored mechanical energy.

Peak’s high-deviation toolstring with WellGlide subs was particularly successful in freeing and recovering the stuck toolstring effectively.

The client was extremely impressed with Peak’s performance and has indicated that they will be using Peak’s products and services for future operations.


Product Code(s): Peak Cutter – 215, WellGlide - 107