Western Atlas International, Inc.

Other

Baker Hughes Corporation

Josephine Lopez

Saeed Rafie

Thomas J Poorman

James C Hunziker

Mark R Doyle

Stephen T Ha

Christine L Behrens

A cable includes an optical fiber and a pressure sealed enclosure surrounding the fiber. The enclosure is adapted to be able to be elongated to the maximum expected axial strain on the cable without permanent deformation. In one embodiment, the enclosure is corrugated-wall tube surrounding the optical fiber. The tube contains toroidally shaped rings within the maximum diameter portions of the corrugations in tube wall. The cable includes armor wires wound around the corrugated wall tube. In the preferred embodiment, the tube is surrounded by an elastomeric jacket, and is filled with hydraulic oil or the like to prevent entry of wellbore fluids into the tube under hydrostatic pressure. The cable may be used for well logging operations or for seismic data acquisition.

Fiber optic well logging cable

A well logging cable including an optical fiber and a pressure sealed enclosure surrounding the fiber. The enclosure is adapted to be able to be elongated to the maximum expected axial strain on the logging cable without permanent deformation. In one embodiment, the enclosure is a corrugated-wall tube surrounding the optical fiber. The tube contains toroidally shaped rings within the maximum diameter portions of the corrugations in the tube wall. The cable includes armor wires wound around the corrugated-wall tube. In the preferred embodiment, the tube is surrounded by an elastomeric jacket, and is filled with hydraulic oil or the like to prevent entry of wellbore fluids into the tube under hydrostatic pressure.

The present invention is a well logging cable including first conductor elements, each of the first elements consisting of a steel wire surrounded by copper strands and covered in an electrically insulating material, and at least one second conductor element including at least one optical fiber enclosed in a metal tube, copper strands surrounding the tube and the strands covered by the electrically insulating material. The first elements and the at least one second element are arranged in a central bundle. The second conductor element is positioned within the bundle so as to be helically wound around a central axis of the bundle. The bundle is surrounded by armor wires helically wound externally to the bundle.

Combination fiber-optic/electrical conductor well logging cable

The expanded-beam fiber, fiber-optic connector assembly includes a body having a longitudinal bore for receiving an aligning sleeve therein which has an axial hole for receiving a strand of optical fiber. The optical fiber may be surrounded by a stress member which is firmly anchored by a crimping sleeve to the exterior of the body. The optical fiber extending through the aligning sleeve is cleaved to within 0.020 inch of the end of the sleeve that slideably receives a ferrule containing a self focusing microlens in one end. The aligning sleeve mates with the ferrule such that the end of the optical fiber is axially aligned and in contact with the microlens. Two such connectors may be coupled together by an aligning ferrule such that the microlenses of each are no more than one quarter of an inch apart.

Growing community of inventors

McAllen, TX, United States of America

Josephine Lopez