North Sea Well Access Restored Through Intelligent Wireline Intervention 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

PTTEP gas lift straddle conversion restores oil production for mature well

Rigless three-run slickline operation achieves production and economic goals, Gulf of Thailand.

PTT Exploration and Production (PTTEP) uses gas lift straddle technology to economically extend the productive life of a mature oil well that was initially completed with slim monobore tubing and no lift technology.

PTTEP's concerns

High water cut and reservoir depletion choked hydrocarbon production from a well that had been a consistent oil producer for several decades. Reservoir analysis determined that significant reserves remained but would require secondary recovery technology, which had been considered uneconomical when the well was originally completed and was considered economically challenging.

What PTTEP considered first

During the planning stage, conventional slickline-conveyed gas lift valve (GLV) stinger systems were considered but eliminated as high risk because of the numerous installations (8) required and the need to replace packoffs every 6 to 12 months. Other technologies were also eliminated because they would require the assistance of a workover rig, making them uneconomical.

What PTTEP selected

Project engineers chose a Peak Well Systems gas lift conversion with SIM sealing integrity management system, which could be installed in only three runs and would minimize subsequent maintenance.

What PTTEP achieved

The Peak Well Systems engineering team designed a SIM system with GLV straddle including a calibrated carbide choke orifice for gas inflow control and a ceramic ball-type check valve to keep the A-annulus hydrocarbon-free.

During the three-run installation operation, the lower SIM system was set below the target gas injection zone, the tubing punched for A-annulus access, and the upper SIM system and gas lift stinger assembly were latched and sealed to the lower SIM system.

After installation, gas injection was started through the A-annulus, as in a typical gas-lifted well, delivering oil production in the range of initial postcompletion rates.


Product Code: 357