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US 5,855,062 AGranted
Method and apparatus for manufacturing an insulated conductor in metal tubing
OwnerClarence E. Kendall, Jr.inventor
Life of this patent
Estimating the term…
Abstract
A method and apparatus for making a length of cable including placing a length of pipe forming a closed chamber into a bore hole, placing a length of metal tubing into the pipe, attaching a piston pig to an electrically conductive wire and inserting the pig into the metal tubing and applying a differential pressure to the piston pig for controlling the movement of the pig and conductor through the tubing, and removing the combination of the tubing and wire from the pipe for later use.
Claims24
The method of making a length of cable comprising,
- placing a length of pipe having a closed end and an open end, in a generally vertical position with the closed end downwardly,
- placing a length of metal tubing in a generally longitudinally extending position into the pipe,
- inserting an electrically conductive wire having an insulated cover thereon longitudinally through the metal tubing in which the cover has an outside dimension less than the inside dimension of the metal tubing wherein the wire is inserted into the tubing by acting on a piston pig connected to the wire with fluid pressure and by gravity, and
- reducing the inside dimension of the metal tubing after the wire has been inserted in the tubing at spaced points along the length of the tubing to provide longitudinal support for the wire.
1 more element
The method of making a length of cable comprising,
- placing a length of pipe having a closed end and an open end, generally in a vertical bore hole with the closed end downwardly,
- placing a length of metal tubing having a lower end and an upper end into the pipe and supporting the tubing therein from adjacent the upper end,
- sealing between the upper end of the tubing and the open end of the pipe and closing the open end of the pipe,
- providing an air communication from the lower end of the tubing through an annulus between the tubing and the pipe and to the exterior of the pipe,
- attaching a piston pig to an electrically conductive wire having an insulated cover thereon in which the cover has an outside dimension less than the inside dimension of the metal tubing,
- inserting the piston pig into the metal tubing, and
- applying a positive pressure to the upper end of the metal tubing pushing the pig and the wire downwardly through the metal tubing until the pig moves to the lower end of the metal tubing pulling the wire through the tubing,
- removing the combination of the metal tubing and the insulated wire from the pipe for later use.
5 more elements
An apparatus for making a length of cable comprising,
- a generally longitudinally extending container having an inside, a closed first end and an open second end, wherein the container is a pipe positioned in a well bore,
- a length of metal tubing longitudinally extending in the inside of the container, said tubing having an outside of a size less than the size of the container inside, and having open first and second ends,
- a length of electrically conductive wire having an insulated cover thereon, said cover having an outside size less than the size of the inside of the tubing,
- at least one piston pig connected to the wire for assisting in moving the pig and wire through the inside of the tubing by a differential fluid pressure, fluid pressure means connected to the container for applying fluid pressure to the pig.
1 more element
Dependencies are inferred from the claim text.