Fiber optic well logging cable

Fiber optic well logging cable

1. Field of the Invention 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...

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Hauptverfasser: Rafie, Saeed, Lopez, Josephine
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Sprache:eng
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creator Rafie, Saeed
Lopez, Josephine
description 1. Field of the Invention 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.
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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. 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Field of the Invention 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. 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Field of the Invention 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.</abstract><oa>free_for_read</oa></addata></record>
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source USPTO Issued Patents
title Fiber optic well logging cable
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