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AssigneeAtlantic Richfield Company
InventorsKenneth G. Klamm, Margaret A. Yaege
Estimating the term…
Fiber optic cables and similar signal conductors are installed in fluid transmission pipelines by cutting the pipeline at spaced apart points to form a section of pipeline for receiving the cable, installing pipeline pig launching and receiving fittings on the section of pipeline to receive the cable, and pumping a pipeline pig from the launching fitting to the receiving fitting while connected to one end of the cable by pumping liquid or gas into the pipeline behind the pig. Pressure responsive seals are provided for engagement with the cable at the launching fitting to prevent leakage of pumped fluid from the pipeline section into which the cable is being installed. The seals may be used to seal cable entry and exit points on inactive pipelines. Active pipelines are restored to service by the installation of a cable seal assembly having a split stuffing box and packing gland arrangement for sealing the entry and exit point of the cable with respect to the pipeline.
A method for installing an elongated flexible cable in a section of fluid transmission pipeline comprising the steps of:
A system for installing a fiber optic cable in the interior of a fluid transmission pipeline wherein a predetermined length of said cable is installed in a section of said pipeline, said system comprising:
In a fluid transmission pipeline having a signal transmitting cable extending through said pipeline over at least a first predetermined section of said pipeline and wherein said cable enters said section of pipeline at a first point and exits said section of pipeline at a second point, a cable seal fitting forming a part of said section of pipeline and including cable seal means for forming a fluid tight seal around said cable at least at one of said exit and entry points, said seal means comprising;
Dependencies are inferred from the claim text.