METHOD AND APPARATUS FOR TREATING LOGGING CABLE

摘要

A method and apparatus for removing permanent stretch characteristics of electromechanical cable by application of predetermined tension and heat to the cable while continuously moving the cable linearly from a supply drum, through spaced capstans and to a take-up drum. A cable heater is positioned at a braking capstan to soften the polymer insulation of the electrical conductor or conductors and permit tension responsive conductor movement relative to the polymer insulation, thus dissipating the permanent stretch and rendering the cable suitable for accurate well logging and for conducting other downhole well services. The outer cable armor is loosened to start the seasoning process and is tightened as it is taken up at completion of the process.

主权项

1. A method for processing electromechanical cable having one or more polymer coated electrical conductors and having oppositely twisted inner and outer armor to substantially dissipate the permanent stretch characteristics thereof, comprising:
moving the electromechanical cable from a supply drum; loosening the electromechanical cable as it is moved from said supply drum; moving the electromechanical cable linearly and substantially continuously from a supply drum to a take-up drum; substantially continuously applying predetermined tension to a section of the electromechanical cable during said step of moving the electromechanical cable, said predetermined tension causing movement of the electrical conductors relative to the polymer coating of the electromechanical cable and substantially dissipating the permanent stretch characteristics of the electromechanical cable; tightening the outer armor of the electromechanical cable; and recovering the stretched and tightened electromechanical cable to a take-up drum.