US5495547A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combination fiber-optic/electrical conductor well logging cable
Assignee: Western Atlas International Inc
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Filing: 1995-04-12
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Granted: 1996-02-27
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Expires: 2015-04-12
Abstract
Abstract 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.
Inventors
- 👤 Saeed Rafie
- 👤 Stephen T. Ha
- 👤 Josephine Lopez
- 👤 James C. Hunziker
- 👤 Mark R. Doyle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:05
CPC Classifications
H; H01; H01B; H01B7/00; H01B7/04; H01B7/046; E; E21; E21B; E21B17/00; E21B17/20; E21B17/206; G; G02; G02B; G02B6/00; G02B6/44; G02B6/4401; G02B6/4415; G02B6/4416; G02B6/4427; H01B9/00; H01B9/005
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
128 words
A well logging cable comprising: first conductor elements including a steel wire surrounded by copper strands, said copper strands covered by an electrically insulating material; at least one second conductor element including at least one optical fiber enclosed in a metal tube, copper strands surrounding said tube, said copper strands covered by said electrically insulating material, wherein said first conductor elements and said at least one second conductor element are arranged in a central bundle, said at least one second conductor element positioned in said central bundle so as to be helically wound around a central axis of said bundle, said at least one second conductor element having electrical impedance substantially the same as one of said first conductor elements; and armor wires helically wound around said bundle.
Claim 2
Dependent Claim
128 words
A well logging cable comprising: first conductor elements including a steel wire surrounded by copper strands, said copper strands covered by an electrically insulating material; at least one second conductor element including at least one optical fiber enclosed in a metal tube, copper strands surrounding said tube, said copper strands covered by said electrically insulating material, wherein said first conductor elements and said at least one second conductor element are arranged in a central bundle, said at least one second conductor element positioned in said central bundle so as to be helically wound around a central axis of said bundle, said at least one second conductor element having electrical impedance substantially the same as one of said first conductor elements; and armor wires helically wound around said bundle.
Claim 3
Dependent Claim
13 words
The cable as defined in claim 1 wherein said insulating material comprises ETFE.
Claim 4
Dependent Claim
13 words
The cable as defined in claim 1 wherein said insulating material comprises polypropylene.
Claim 5
Dependent Claim
14 words
The cable as defined in claim 1 wherein said metal tube comprises stainless steel.
Claim 6
Dependent Claim
16 words
The cable as defined in claim 1 wherein said steel wire is covered with metallic copper.
Claim 7
Dependent Claim
33 words
The cable as defined in claim 1 wherein said bundle comprises a total number of seven conductor elements consisting of said first conductor elements and at least one of said second conductor elements.
Claim 8
Dependent Claim
60 words
The cable as defined in claim 6 wherein said bundle comprises two of said second conductor elements and five of said first conductor elements, said bundle arranged in a substantially regular hexagonal pattern so that said two of said second conductor elements are positioned opposite each other and helically wound around a centrally positioned one of said first conductor elements.
Claim 9
Dependent Claim
22 words
The bundle as defined in claim 7 further comprising a filler material disposed within void spaces within said substantially regular hexagonal pattern.
Claim 10
Dependent Claim
13 words
The bundle as defined in claim 8 wherein said filler material comprises polypropylene.
Claim 11
Dependent Claim
14 words
The cable as defined in claim 1 wherein said armor wires comprise galvanized steel.
Claim 12
Dependent Claim
20 words
The cable as defined in claim 1 wherein said armor wires comprise two coaxial contiguous layers of helically wound wires.
Claim 13
Dependent Claim
18 words
The cable as defined in claim 1 or claim 11 wherein said armor wires comprise a cobalt-nickel alloy.
References Cited (Backward Citations)
JPS5833206A
Cited
US4651917A
Cited
US4504112A
Cited
US4522464A
Cited
US4696542A
Cited
US4552432A
Cited
US4575184A
Cited
US4645298A
Cited
US4976509A
Cited
US5140319A
Cited
US5202944A
Cited
US5355128A
Cited
US5150443A
Cited
US5408560A
Cited
WO1994028450A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1999-02-26 | 1999-08-28 | 2000-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-02-26 | 2003-08-28 | 2004-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-02-26 | 2007-08-28 | 2008-02-27 | $7700.00 | Window Closed / Lapsed |