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

D-Set setting tool and DSL digital slickline cable set large-bore gauge hanger in monobore well

Nonexplosive setting enables medium-term pressure and temperature monitoring service for further development of reservoir characterization and management.

Mechanical intervention technologies by Schlumberger and Peak Well Systems avoid cost of pulling first slickline unit for 22 days of measurements.

Zhaikmunai LLP’s concerns

Zhaikmunai LLP, subsidiary of Nostrum Oil & Gas PLC, was engaged in exploration, development, and production of oil and gas from the Chinarevskoye Field in northwestern Kazakhstan. Pressure buildup and temperature had to be recorded in a well for 22 days to further develop skin parameters for reservoir characterization and management. To convey and set a medium-term pressure and temperature monitoring service, Zhaikmunai required a nonexplosive solution.

What Zhaikmunai tried first

Zhaikmunai first considered a traditional nipple solution, but the well had a monobore completion, and there were no nipples for setting the pressure and temperature gauges.

A second traditional solution was to hang gauges on slickline. But this required diverting a second slickline unit and 24-h crew, costing about USD 80,000 for the 22-day operation. Time would also be lost on the rig while waiting for a second unit to be dispatched, and the 24-h crew would need to be staffed. Zhaikmunai needed a low-cost well intervention alternative.

What was recommended

Schlumberger recommended using a large-bore gauge hanger (LBGH) by Peak Well Systems with pressure and temperature gauges for pinpoint real-time and memory data acquisition. These would be deployed with D-Set digital electrohydraulic setting tool and DSL digital slickline cable by Schlumberger for setting the LBGH 100% mechanically at the required depth with accurate depth control anywhere in the tubing.

What was achieved

After technical and commercial discussions and agreement about the mechanical intervention, the LBGH was mobilized to Kazakhstan. The Peak LBGH was set as an anchor at the correct depth without explosive setting devices, providing a platform for pressure and temperature instruments requiring suspension in the wellbore. It was conveyed by DSL digital slickline conducted by two Schlumberger specialists from Kazakhstan who prepared, mobilized, and deployed the service. The team was trained and supported by personnel from Peak Well Systems. The 22-day mechanical intervention took 5 h of personnel involvement: 2 h to rig up, 1 h to run in hole, 1 h combined to set and pull out of hole, and 1 h to rig down.


Product Code: 340