In A Challenging West Africa DeepWater Well , Polymer-Locked, Crush-Free Wireline Composite Cables Help Save Four days of Rig time For TOTAL EP CI While Avoiding Tool Sticking And Reducing HSE Risk.

摘要

The recent breakthrough developments of polymer-filled armor cables with crush-free electrical cores effectively eliminate inherent limitations of wireline logging cables. These novel cables deployed with a complete high-tension conveyance package have effectively reduced deep water Wireline tool sticking occurrences and the subsequent lengthy fishing operations in emerging Deepwater and depleting reservoirs. Unique composite polymer technology locks the normally unbound cable armors to the core. Further coldflow and crush resistant protection is added to the cable core itself. The result is a mechanically rigid, torque-balanced and crush-free Wireline cable that effectively eliminates known issues with core coldflow, cable rotation & plastic stretch, armor stranding & bird-caging, while enabling high-tension spooling on a drum without the use of tension relief system (Capstan). With spooling tensions up to 13klbf, instantaneous pulls of 18klbf, and a safety margin of 9klbf, the complete high tension package offers tool sticking mitigation capabilities only possible previously with a Capstan package. Additional benefits include, but are not limited to, fully seasoned new cable and reduced frequency of cable maintenance. Furthermore, the elimination of the dual drum Capstan eliminates significant operational risk. In the recent deeper than 5000 m S-shaped Ultra-deep water West Africa well drilled by TOTAL E&P CI, logging tensions in excess of 10,700 lbf were expected. TuffLINE 18000, a polymer encapsulated high strength cable was deployed in a timely manner, avoiding the need for Capstan or TLC conveyance. Eight high tension descents and full data acquisition were carried out without tool sticking or HSE incidents. The low friction coefficient of TuffLINE helped further reduce surface tension to 9,400 lbf. With the proven financial and HSE benefits, polymer filled composite Wireline cables and the hightension conveyance package reduce Wireline tool sticking risk.