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Hinda Gharbi, president, Wireline, Schlumberger, said: “With the industry’s highest-pull wireline conveyance system, drillers can expect drill pipe-free wireline operations in any environment with vertical well efficiency and minimum sticking risk. In addition, our customers can mitigate operational risk and save time during comprehensive data acquisition by eliminating the use of conventional drill pipe conveyance.”

The new system can pull up to 30,000-lbf line tension, which the company said is 43% higher than previously possible. It says that the system with wireline tractors further improves well access in complex well trajectories while minimizing the number of logging runs.

The system has been tested in a wide variety of well environments and trajectories in the Middle East, Europe, Asia, West Africa, and North and South America.

As drilling technology matures, the complexity achieved with deepwater, ultradeepwater, unconventional, and extended- reach wells has significantly intensified in the past decade. However, these increasingly deeper and longer wells and the diverse reservoirs they access pose heightened challenges and risk for acquiring the data needed for reservoir characterization.

To meet these challenges and effectively manage risk, the MaxPull* high-pull wireline conveyance system integrates components specifically engineered for risk reduction to deploy wireline tools on TuffLINE* torque- balanced composite cables, including the latest addition to the industry’s strongest and highest-safety cables: TuffLINE 30000 cable. The result is the world’s first 30,000-lbf conveyance system, providing unparalleled safety, reliability, efficiency, and sticking avoidance, even in well trajectories and conditions that were not previously wireline accessible. Augmenting the MaxPull system’s capabilities with the UltraTRAC* all-terrain wireline tractor further increases push and pull capabilities to provide the complete conveyance solution for every possible well environment.

• successfully log wells deeper than 36,000 ft in the Gulf of Mexico
• tractor hundreds of thousands of feet in horizontal wells in North American unconventional plays
• effectively reduce tool sticking risk in emerging deepwater reservoirs
• eliminate conventional reliance on costly and time-consuming drillpipe conveyance for increasingly complex well environments
• save millions of dollars on maintenance transportation trips needed for conventional high-strength cables deployed in challenging remote exploration wells.

Applications

MaxPull conveyance systems are customized for the well environment and the logging program to provide the most efficient and lowest risk wireline acquisition solutions:

• Deepwater and ultradeepwater wells
• up 40,000 ft in depth and requiring
• Land and offshore deviated- development reservoirs
• Land and offshore extended-reach and horizontal wells
• Unconventional wells
• Complex-geometry boreholes
• Extended-reach wells in unconsolidated formations
  

Benefits

By engineering out the traditional limitations of wireline acquisition, MaxPull conveyance systems provide maximum rig flat-time savings and numerous other benefits:

• Rig flat-time savings from highly reduced tool sticking risk
• High pull capability across the system
• Aided by bidirectional tractor force
• Multiple jarring and cable cycling capabilities
• Rig-time savings through improved well access efficiency
• Rig-time savings with fewer descents of longer, heavier tool combinations and faster logging speeds
• Rig-time savings by elimination of reliance on pipe-conveyed logging in any borehole geometry
• More informed decision making based on cost-effective, complete, comprehensive, and highest possible resolution acquisition of reservoir data in any borehole environment
• Reduction in logistics costs and maintenance turnaround time resulting from no routine cable maintenance trips to shore during the complete well drilling program
  
• 24 hours of rig-time savings by eliminating the cable seasoning required for all standard high-tension cables
• Elimination of cable depth accuracy issues that occur with conventional cables
• Rig-time savings from reduced seal failures by positioning large wireline formation tester toolstrings with rollers
• Elimination of geometry constraints on pilot wells for data acquisition by extending wireline access beyond gravity descents
• Prevention of information gaps through cased hole access for advanced data acquisition
• Increased safety for high-tension operations with risk mitigation and prevention
• Improved wireline logging efficiency from fewer runs of heavier, longer tool combinations and avoidance of drillpipe conveyance
• Reduced cable maintenance and related transportation logistics
• Greater sticking avoidance through minimized risk of fishing operations and associated rig flat time
• Substantial deepwater rig-time savings with no cable seasoning required

MaxPull 30000 System

The MaxPull system can be deployed as a standard conveyance system or customized for optimal wireline performance delivery in all well configurations across all land and offshore environments.

• 30,000-lbf TuffLINE 30000 composite cable
  
• OSU-N high-capacity unit
  
• Capstan 30000 with 30,000-lbf tension-relief capability
  
• WDR-70 drum with 43,000-ft cable capacity
  
• Surface-programmable smart wireline jar
  
• WellSKATE low-friction well-access accessories
  
• SureLOC electronically controlled cable release device (ERCD) complemented by multiple inline release devices positioned strategically along the toolstring
  
• UltraTRAC all-terrain wireline tractor for additional 3,000 lbf of push and pull
  
• MaxWell* integrated field acquisition system for management of power, telemetry, and data
  

The recently introduced TuffLINE 30000 torque-balanced composite cable is the industry’s highest-strength cable. Like TuffLINE 18000 and TuffLINE 26000 cables, TuffLINE 30000 cable employs the breakthrough technology of polymer-locker armors to overcome the fundamental limitations

of current armored cables. The cable’s inherent torque is balanced by increasing the thickness of the inner armor strands. Polymer encapsulation effectively locks the armors to prevent armor torque accumulation. The result is cable in a permanent ends-fixed condition, which raises the ends-free breaking strength safety margin of TuffLINE 30000 cable to an unprecedented 10,000 lbf above the safe working load (SWL) of standard high-pull armored cable. TuffLINE 30000 cable also has an ends-fixed breaking strength in excess of 43,000 lbf.

TuffLINE 30000 cable incorporates industry- leading 16 AWG gauge conductors to enable reliable conveyance of tool combinations longer than 175 ft and at 6,000 lbf in well depths exceeding 40,000 ft. Combining tools reduces the number of descents in the well, saving an average of 12 hours or more per trip on a deepwater rig.