US3773109A - Electrical cable and borehole logging system - Google Patents

Electrical cable and borehole logging system Download PDF

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US3773109A
US3773109A US3773109DA US3773109A US 3773109 A US3773109 A US 3773109A US 3773109D A US3773109D A US 3773109DA US 3773109 A US3773109 A US 3773109A
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cable
probe
layer
portion
armor
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H Eberline
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KERR MC GEE CHEM CORP
KERR MCGEE CORP US
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KERR MC GEE CHEM CORP
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01VGEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS
    • G01V5/00Prospecting or detecting by the use of nuclear radiation, e.g. of natural or induced radioactivity
    • G01V5/04Prospecting or detecting by the use of nuclear radiation, e.g. of natural or induced radioactivity specially adapted for well-logging
    • G01V5/045Transmitting data to recording or processing apparatus; Recording data
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B17/00Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods ; Cables; Casings; Tubings
    • E21B17/02Couplings; joints
    • E21B17/023Arrangements for connecting cables or wirelines to downhole devices
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B17/00Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods ; Cables; Casings; Tubings
    • E21B17/02Couplings; joints
    • E21B17/028Electrical or electro-magnetic connections
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B29/00Cutting or destroying pipes, packers, plugs, or wire lines, located in boreholes or wells, e.g. cutting of damaged pipes, of windows; Deforming of pipes in boreholes or wells; Reconditioning of well casings while in the ground
    • E21B29/02Cutting or destroying pipes, packers, plugs, or wire lines, located in boreholes or wells, e.g. cutting of damaged pipes, of windows; Deforming of pipes in boreholes or wells; Reconditioning of well casings while in the ground by explosives or by thermal or chemical means
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B47/00Survey of boreholes or wells
    • E21B47/12Means for transmitting measuring-signals or control signals from the well to the surface or from the surface to the well, e.g. for logging while drilling
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00Insulated conductors or cables characterised by their form
    • H01B7/04Flexible cables, conductors, or cords, e.g. trailing cables
    • H01B7/046Flexible cables, conductors, or cords, e.g. trailing cables attached to objects sunk in bore holes, e.g. well drilling means, well pumps

Abstract

Low-noise electrical cable includes a coaxial transmission line having a central conductor, a layer of insulation, and a tubular conductor sheathing the insulation, another layer of insulation sheathing the tubular conductor, a composite layer of insulated conductors and semiconductive material, two layers of semiconductive tape, and two layers of armor. In borehole radiation logging, the cable is connected to a downhole probe. Signals are transmitted to the surface along the central conductor, with the tubular conductor and armor grounded and power supplied to the probe through conductors in the composite layer. The probe includes exothermic material which is ignited to sever the cable from the probe should the probe become lodged in the borehole, for recovery of the cable.

Description

United States Patent [1 1 Eberline ELECTRICAL CABLE AND BOREHOLE LOGGING SYSTEM Howard C. Eberline, Edmond,

Okla.

Kerr-McGee Corporation,

Oklahoma City,-Oklahoma Oct. 29, 1970 [75] Inventor:

[73] Assignee:

int. C1 Ezlh 29/02 Field of Search 166/545, 54.6, 63; 324/7; 250/836; 340/18; 102/212; 174/108, 115,113 R, 105, 107, 127 SC, 105 SC, 106 SC, 70 R, 70 S References Cited UNITED STATES PATENTS Nov. 20, 1973 3,584,139 6/1971 Swanson 174/113 R 2,760,078 8/1956 Youmans 250/836 W Primary Examiner-Bemard A. Gilheany Assistant Examiner-A. T. Grimley Attorney-Shanley & ONeil 7 ABSTCT Low-noise electrical cable includes a coaxial transmission line having a central conductor, a layer of insulation, and a tubular conductor sheathing the insulation, another layer of insulation sheathing the tubular condoctor, a composite layer of insulated conductors and semiconductive material, two layers of semiconductive tape, and two layers of armor. In borehole radiation logging, the cable is connected to a downhole probe. Signals are transmitted to the surface along the central conductor, with the tubular conductor and armor grounded and power supplied to the probe through conductors in the composite layer. The probe includes exothermic material which is ignited to sever the cable from the probe should the probe become lodged in the borehole, for recovery of the cable.

11 Ciaims, 5 Drawing; Figures PAIENTEB NOV 2 0 1975 SHEET 10F 2 INVENTOR HOWARD c. EBERLINE SW-Eur M monmevs PAYENTEDHUVEO ma SHEET 2 CF 2 YQHJVEN'TOR HOWARD c. EBERLINE ATTORNEYS ELECTRICAL CAEIJIE AND EOEEIHIOLE LOGGING SYSTEM BACKGROUND OF THE INVENTION Conventional borehold logging systems are unsatisfactory. There has been no cable having noise characteristics that are sufficiently low to avoid distorting or otherwise interfering with low-strength, high-frequency electrical signals transmitted by the cable from a downhole radiation detector to apparatus at the surface for analysis of the signals to produce useful information regarding earth formations traversed by the borehole. Hence, signal processing apparatus which could remain at the surface but for the noise has to be packed into the probe. This requires special design of apparatus to fit into the probe, and increases the size and cost of the probe.

In efforts to provide low-noise cables, various conductor arrangements have been proposed, together with semiconductive filler material and/or electrical shielding. However, such arrangements have not proved satisfactory for borehole radiation detection systems, because of the low strength of the signals and their sensitivity to distortion. Long-standing needs exist for improved, low-noise cables and borehole logging systems in which weak, high-frequency signals can be transmitted over thousands of feet of cable from a downhole probe to signal analyzing apparatus located at the surface of the earth. Main objects of the invention are fulfillment of these needs.

Another disadvantage of prior logging systems is lack of a satisfactory arrangement for separating the cable from the probe in the event that the probe became lodged in the borehole. Such an arrangement is highly desirable, for it not only permits recovery of the expensive cable, but also facilitates fishing for the probe because the cable is not present in the hole to interfere.

Another object of the invention is provision of borehole logging systems in which cable and probe are readily separable.

Other objects and advantages of the invention will appear from the following detailed description which, in connection with the accompanying drawings, discloses a preferred embodiment of the invention for purposes of illustration only and not for determination of the limits of the invention. For definition of the scope of the invention, reference will be made to the ap pended claims.

BRIEF DESCRIPTION OF THE DRAWINGS In the drawings, where similar reference characters denote similar elements throughout the several views:

FIG. I is a cross-sectional view of a cable embodying principles of the invention;

FIG. 2 is a side view of the cable of FIG. l, with parts broken away;

FIG. 3 schematically illustrates a borehole logging system embodying principles of the invention;

FIG. d is a cross-sectional view of borehole logging apparatus embodying principles of the invention; and

FIG. 5 is an enlarged, detail view of the apparatus of FIG. t.

DESCRIPTION OF THE PREFERRED EMBODIMENT FIGS. l and 2 depict a cable It) including a coaxial transmission line ll. Transmission line It includes a central electrical conductor 12 including six helically wound copper wires l4 Wires M are wound around a nylon monofilament l6, and carry communications signals. A continuous flexible layer lb of propylene copolymer electrical insulation sheaths central conductor 12..

A tubular conductor 20 of braided, tinned-copper wires sheaths insulation layer 118, forming the outer conductor of coaxial transmission line 1 l. Tubular conductor 20 is maintained in concentric relationship with central conductor l2 by the dielectric material of layer IS which fills the annular cavity between the conductors. Another layer 22 of propylene copolymer electrical insulation sheaths braided tubular conductor 20, which is of circular cross-section.

A composite layer 24 sheaths insulation layer 22. Composite layer 24 is composed of a plurality of conductive members or insulated conductors 26, and masses 28 of semiconductive material interspersed between the conductive members. Conductive members 266 are disposed at spaced-apart locations around the outer periphery of insulation layer 22, completely encircling the insulation layer. Each conductive member 26 includes an electrical conductor 30 and a jacket 32 of propylene copolymer electrical insulation sheathing conductor Sill. Each conductor 34) includes seven helically wound copper wires 34$.

The conductive members are circular in cross section. Hence, opposed curved surfaces of adjacent insulation jackets 32, in receding from one another, define a peripheral row of generally V-shaped valleys adjacent insulation layer 22, and another peripheral row of generally V-shaped valleys at the outer periphery of composite layer 24 Since conductive members 26 are spaced from another, the valleys communicate with one another to form interstices or spaces extending radially through composite layer 24. The space between each pair of adjacent conductive members 26 is completely filled with a mass 2S of electrically semiconductive material, so that semiconductive material surrounds each conductive member 26 except at locations where the conductive member contacts insulating layer 22 and a layer 3b, to be described, located radially outwardly of composite layer 24!.

Each mass 2S of semiconductive material is in electrical contact with insulation layer 22, and with the jackets 32 of the conductive members on opposite sides of the mass. That is, the relationship of semiconductive material 2% to insulation layer 22 and to jackets S2 is such that electrostatic charges will pass from layer 22 and jackets 32 into the semiconductive material. As will appear, the semiconductive material conducts the charges to the conductive armor of the cable, for grounding. It will be appreciated that the necessary electrical relationship is established by physical contact between the elements, as illustrated, but is not destroyed by interposition of a semiconductive or conductive material. The semiconductive material of masses 2% is applied in a plastic state to till the spaces between adjacent helically wound. conductive members an, and hardens in situ.

The semiconductive material can be of any suitable, conventional type, e.g., Amertex, available in cables produced by United States Steel Corporation, Worchester, Massachusetts. Other semiconductive materi als conventionally used in electrical cables can be employed, e.g., compounds of the polychloroprene rubbers.

A layer 36 of spirally wrapped, semiconductive tape, e.g., nylon tape impregnated with a semiconductive substance such as graphite, sheaths composite layer 24. Tape layer 36 binds the assembly and aids in waterproofing the cable. The tape is in physical contact, and thus in electrical contact, with each mass of semiconductive material in composite layer 24. Another, oppositely wound, layer 38 of identical semiconductive tape sheaths inner tape layer 36, and is in physical and therefore electrical contact with the tape of layer 36. The outer tape layer 38 assures adequate waterproof- The assembly thus far described is sheathed by two layers 40, 42 of galvanized steel armor wires, which protect the internal elements of the cable from physical damage. The armor layers are in electrical contact with the semiconductive material of composite layer 24 through the semiconductive tape layers 36, 38. The inner layer 40 of armor is in physical contact with tape layer 38, and is wound with a right hand lay. Outer layer 42 of armor is in physical contact with inner layer 40, and is wound with a left hand lay.

Cables made in accordance with the invention are highly advantageous in having remarkable low noise characteristics. Use of a coaxial transmission line makes for low loss transmission of weak high-frequency signals. Electrostatic charges generated by sliding of cable components over one another during cable flexure, which charges would otherwise build up and then discharge and thus generate noise voltages and adversely affect communications signals, are continuously drained by the semiconductive material and carried to the conductive armor for grounding. The outer conductor 20 of the coaxial transmission line is grounded and therefore further contributes to noise reduction by shielding or isolating the central communications conductor 12 from external signals which could interfere with signal transmission along conductor 12.

Cable is shown in use in the borehole logging system schematically represented in FIG. 3. In this system, cable 10 extends from the surface of the earth over a supporting sheave 43 into a borehole 44. A probe 46 is connected to cable 10 and includes a gamma radiation detector 48, which can be of any suitable type of conventional design. Detector 48 detects radiation emanating from adjacent earth strata and produces an electrical signal corresponding to the detected radiation. This signal is too weak to reach the surface of the earth and is therefore transmitted by conductor 50 to a preamplifier 52 for preamplification to a strength level (e.g., with a gain of 10) sufficient to carry to the surface. The preamplified radiofrequency signal is transmitted directly, without further amplification, to central conductor 12 for transmission along cable 10. The signal is carried by cable 10 to amplifier 54 and signal analyzing apparatus 55, which are located at the surface of the earth. Signal analyzing apparatus 55 can be of any suitable, conventional type for analyzing the signals and translating them into useful intelligence regarding earth strata traversed by the borehole.

Electrical power for energizing preamplifier 52 and detector 48 is supplied to probe 46 from a power supply and control unit 58 at the surface of the earth through two of the conductors 30, respectively. Other conductors 30 can be used to energize other measuring instruments (not shown) contained in the probe. Tubular conductor 20 is at ground potential and functions as a return for power unit 58 by virtue of electrical connection to metallic probe casing 47, to which the energizing and radiofrequency circuits of detector 48 and preamplifier 52 are electrically connected. The cable armor is electrically grounded through drilling fluid or other liquid in the borehole and through an electrical ground connection at the surface, so that electrostatic charges received from the interior of the cable are drained to earth to prevent their causing noise in the cable.

Borehole logging systems according to the invention are particularly advantageous. Because of the lownoise cable, the accuracy and speed of logging can be increased. Without distortion of the communication signals, accurate interpretation can be effected. Logging systems according to the invention have been operated without noise at cable speeds of 250 feet per minute with input sensitivities as low as l millivolt, which is unprecedented. Further, the amount of electronic gear present in the probe can be minimized, so that need for specially designed apparatus to fit into the probe is reduced to a minimum and a compact and inexpensive probe is provided.

As shown in FIG. 4, hollow, cylindrical metal casing 47 of probe 46 includes three separable cylinders 50, 52, 54, and a cap 56. A weight 58 is screwed to lower cylinder 54, which includes a cavity 60 for receiving the radiation detector. Intermediate cylinder 52 includes a cavity 62 for receiving the preamplifier. Upper cylinder 50 includes a cavity 64 in which the conductive components of the cable are separated, and which is filled with a mass 66 of silicone sealing material for waterproofing the probe.

The cylinders separate from one another to facilitate access to the instruments and other elements within the probe. Resilient O-rings such as 68 form tight seals when the cylinders are assembled. Cylinders 50, 52 are joined by mating threads 70 on their respective outer and inner peripheries. The lower end of cylinder 52 slip-fits into cylinder 54, with radial screws 71 interconnecting the cylinders.

Cap 56 includes a central orifice which receives a metal sleeve 72 (FIG. 5). Sleeve 72 has a circular shoulder 74 bearing against a circular shoulder 76 on cap 56. A central aperture 78 in sleeve 72 receives the end portion of cable 10. The sleeve includes a generally frustoconical portion 80 which projects into cavity 82 in cap 56. Aperture 78 extends axially through projecting portion 80. The two layers of armor are peeled away from the remainder of the cable, and the tips of alternate armor wires in each layer cut off. The remaining tips are deformed backwardly over the outer surfaces of projecting portion 80 at an angle of nearly A cup-shaped lock member 84, having a central recess 86 which receives the deformed armor and projecting portion 80, is shaped to press the deformed armor against the outer surfaces of projecting portion 80 to secure the cable to the probe. Rotation of a nut 88 threadedly engaging the inner periphery of cap 56 forces lock 84- into .locking position, deforming the armor securely against projecting portion 80. Nut 88 secures lock 84 in position so that the armor bears the load of the probe. Lock 84 and nut 88 include central apertures for the conductive portion of cable 10 to proceed axially into the probe.

Within the top end portion of the probe, between lock dd and the inner end of projecting portion $0, and paclted against the deformed armor, is a cable severing means such as a mass 90 of exothermic material. The exothermic material may be a conventional Thermit mixture of iron oxide and aluminum, an explosive charge or the like. This mass of exothermic material surrounds the end portion of the cable, and on ignition sever sever all segments of the cable in the immediate vicinity, including the deformed armor sections which connect the cable to the probe, thereby severing the cable from the probe. When the exothermic material is a Thermit mixture, it may be ignited by application of electric current to an electrical resistance heater 92 which is in heat exchange relationship with mass 90 of exothermic material by virtue of physical contact therewith. Current is supplied to resistor 92 from the surface power source through one of the conductors Sill with the circuit being completed by a connection 93 to the probe casing. Whenever probe l6 becomes stuck in borehole M, the exothermic material is ignited by do sure of a switch in the circuit to resistor 92. and the destruction of the cable at this point separates the probe from the main body of the cable so that the cable can be recovered from the borehole. The cable is thereby recovered, while clearing the borehole for fishing for the probe should this be desired.

Conductive components of cable ltll diverge in cavity 645 (FIG. 4), with conductors 30 passing through a circular row of apertures in a sealing gland assembly 94. The coaxial transmission line, within insulating sheath 22, passes through a central aperture in assembly 94.

Gland assembly 94 includes upper and lower compression plates 96, 9%, between which is interposed a compression gland llllll. Rotation of a nut lll2 threadedly engaging the interior surfaces of upper cylinder 50 compresses the gland between the plates to form a tight seal around the conductors which pass axially into the probe for appropriate electrical connection. Mass 66 of sealing compound is injected in a plastic state under pressure through an aperture in a side wall of cylinder 5b and hardens in place to effectively waterproof the probe. The aperture has threaded sidewalls which engage a screw plug ltll l inserted in the aperture after injection of the sealing material.

Over a period of approximately 26 months, a series of tests was conducted to determine the reliability of the signals obtained utilizing the apparatus of the instant invention. During this interval, test holes were drilled in varying types of formations in several states. The signals received at the surface from the probe were analyzed and compared with core samples obtained from the holes. During the course of these tests various changes and modifications were made. The results of these tests have established that with the apparatus of the instant invention it now is possible to obtain substantially noise free signals from the probe, even when it is being lowered into the hole at a high rate of speed, which signals accurately report the mineral structure at various levels in the hole.

Although the invention has been described in connection with a preferred embodiment, modifications of that embodiment can be made without departing from the principles of the invention. Such modifications and variations are within the scope of the appended claims.

l claim:

l. Borehole logging apparatus, comprising a cable having a probe end portion,

a probe connected to the probe end portion of the ca ble,

means including a mass of exothermic mixture of iron oxide and aluminum operatively associated with the probe end portion of the cable for severing the cable from the probe, and

igniting means for igniting the exothermic mixture.

2. The apparatus of claim 11,

the igniting means including an electrical resistance heater in heat exchange relationship with the mass of exothermic mixture.

3. The apparatus of claim l,

the probe including an end portion having an aperture for receiving a portion of the cable,

the mass of exothermic mixture being located within the end portion of the probe and contiguous to the received portion of the cable.

i. The apparatus of claim 3,

the cable including at least one layer of armor,

the end portion of the probe including a cavity and a projecting member extending into the cavity and having outer surfaces,

the aperture extending through the projecting member,

at least a portion of the armor being peeled away from the remainder of the cable and deformed backwardly over the outer surfaces of the projecting member, and

the probe including locking means pressing the deformed armor against the outer surfaces of the projecting member for locking the cable to the probe.

5. The apparatus of claim 4L,

the mass of exothermic mixture being located between the locking means and the projecting member in a position to sever the deformed armor.

b. The apparatus of claim l,

the locking means including a locking member having a central recess receiving the deformed armor and the projecting member, and

movable means for forcing the locking member into locking position.

7. Borehole logging apparatus, comprising a cable having a probe end portion,

a probe connected to the probe end portion of the cable,

means including a mass of exothermic material operatively associated with the probe end portion of the cable for severing the cable from the probe, and

igniting means for igniting the exothermic material,

the probe receiving a portion of the cable,

the mass of exothermic material being located within the probe and contiguous to the received portion of the cable,

the cable including at least one layer of armor,

the probe including means including surfaces defining a cavity in the probe,

the end portion of the cable extending into the cavity,

at least a portion of the armor being peeled away from the remainder of the cable and deformed over said surfaces,

the probe including locking means pressing the deformed armor against said surfaces for locking the cable to the probe.

%. The apparatus of claim 7,

ing member,

the deformed armor being deformed backwardly at an angle of nearly 180 over the outer surfaces of the projecting member.

10. The apparatus of claim 9,

the mass of exothermic material being located between the locking means and said surfaces in a position to sever the deformed armor.

11. The apparatus of claim 9,

the locking means including a locking member having a central recess receiving the deformed armor and the projecting member, and movable means for forcing the locking member into locking position.

Claims (11)

1. Borehole logging apparatus, comprising a cable having a probe end portion, a probe connected to the probe end portion of the cable, means including a mass of exothermic mixture of iron oxide and aluminum operatively associated with the probe end portion of the cable for severing the cable from the probe, and igniting means for igniting the exothermic mixture.
2. The apparatus of claim 1, the igniting means including an electrical resistance heater in heat exchange relationship with the mass of exothermic mixture.
3. The apparatus of claim 1, the probe including an end portion having an aperture for receiving a portion of the cable, the mass of exothermic mixture being located within the end portion of the probe and contiguous to the received portion of the cable.
4. The apparatus of claim 3, the cable including at least one layer of armor, the end portion of the probe including a cavity and a projecting member extending into the cavity and having outer surfaces, the aperture extending through the projecting member, at least a portion of the armor being peeled away from the remainder of the cable and deformed backwardly over the outer surfaces of the projecting member, and the probe including locking means pressing the deformed armor against the outer surfaces of the projecting member for locking the cable to the probe.
5. The apparatus of claim 4, the mass of exothermic mixture being located between the locking means and the projecting member in a position to sever the deformed armor.
6. The apparatus of claim 4, The locking means including a locking member having a central recess receiving the deformed armor and the projecting member, and movable means for forcing the locking member into locking position.
7. Borehole logging apparatus, comprising a cable having a probe end portion, a probe connected to the probe end portion of the cable, means including a mass of exothermic material operatively associated with the probe end portion of the cable for severing the cable from the probe, and igniting means for igniting the exothermic material, the probe receiving a portion of the cable, the mass of exothermic material being located within the probe and contiguous to the received portion of the cable, the cable including at least one layer of armor, the probe including means including surfaces defining a cavity in the probe, the end portion of the cable extending into the cavity, at least a portion of the armor being peeled away from the remainder of the cable and deformed over said surfaces, the probe including locking means pressing the deformed armor against said surfaces for locking the cable to the probe.
8. The apparatus of claim 7, the mass of exothermic material being located between the locking means and said surfaces in a position to sever the deformed armor.
9. The apparatus of claim 7, the probe including a projecting member extending into the cavity, the cable extending through the projecting member, said surfaces including outer surfaces of the projecting member, the deformed armor being deformed backwardly at an angle of nearly 180* over the outer surfaces of the projecting member.
10. The apparatus of claim 9, the mass of exothermic material being located between the locking means and said surfaces in a position to sever the deformed armor.
11. The apparatus of claim 9, the locking means including a locking member having a central recess receiving the deformed armor and the projecting member, and movable means for forcing the locking member into locking position.
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Cited By (38)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3878444A (en) * 1974-01-21 1975-04-15 Tesco Eng Co Method and apparatus for protecting electrical field cables against rodent damage
US4028660A (en) * 1973-12-21 1977-06-07 Texaco Inc. Well logging method and means using an armored multiconductor coaxial cable
US4247504A (en) * 1976-10-18 1981-01-27 Oy Nokia Ab Method of manufacturing plastic covered highvoltage cables
US4250351A (en) * 1979-08-08 1981-02-10 The Bendix Corporation Cable construction
FR2476897A1 (en) * 1980-02-25 1981-08-28 Cables De Lyon Geoffroy Delore Cable for prospecting
FR2508227A1 (en) * 1981-06-18 1982-12-24 Cables De Lyon Geoffroy Delore Cable electromechanical resistant to high temperatures and pressures and process for its manufacture
US4415895A (en) * 1981-02-11 1983-11-15 Dresser Industries, Inc. Well logging data transmission system
FR2578351A1 (en) * 1985-03-01 1986-09-05 Int Standard Electric Corp Cable logging for oil wells
US4620189A (en) * 1983-08-15 1986-10-28 Oil Dynamics, Inc. Parameter telemetering from the bottom of a deep borehole
US4624308A (en) * 1985-04-15 1986-11-25 Halliburton Company Sour gas cable head
US4648444A (en) * 1985-04-17 1987-03-10 Halliburton Company Tensile ring cable head assembly
US4663628A (en) * 1985-05-06 1987-05-05 Halliburton Company Method of sampling environmental conditions with a self-contained downhole gauge system
US4665398A (en) * 1985-05-06 1987-05-12 Halliburton Company Method of sampling and recording information pertaining to a physical condition detected in a well bore
US4709234A (en) * 1985-05-06 1987-11-24 Halliburton Company Power-conserving self-contained downhole gauge system
FR2613159A1 (en) * 1987-03-27 1988-09-30 Inst Francais Du Petrole signal transmission system between a reception assembly lowered into a well and a central laboratory control and recording
US4866607A (en) * 1985-05-06 1989-09-12 Halliburton Company Self-contained downhole gauge system
US4910360A (en) * 1989-01-05 1990-03-20 Noel Lee Cable assembly having an internal dielectric core surrounded by a conductor
US4937401A (en) * 1989-01-05 1990-06-26 Noel Lee Signal cable assembly including bundles of wire strands of different gauges
US5086196A (en) * 1990-08-09 1992-02-04 Camco, Incorporated Electro-mechanical cable for cable deployed pumping systems
US5184328A (en) * 1992-03-04 1993-02-02 Navigation Technology Corporation Underwater release mechanism
EP1065674A2 (en) * 1999-06-30 2001-01-03 Read Well Services Limited Downhole cable
US6255592B1 (en) 1998-05-04 2001-07-03 Gamut Technology, Inc. Flexible armored communication cable and method of manufacture
US20030195713A1 (en) * 2002-04-16 2003-10-16 Mctigue Michael T. Systems and methods for wideband active probing of devices and circuits in operation
US20040060726A1 (en) * 2002-09-30 2004-04-01 Orlet Michael W. Dual stress member conductive cable
US20040140119A1 (en) * 2003-01-22 2004-07-22 Varkey Joseph P. High temperature electrical cable having interstitial filler
EP1555479A1 (en) * 2002-10-21 2005-07-20 A.G.K. Ltd. Power supply wire, wire grip, electric appliance suspending device, and electric appliance suspending method
US20060137895A1 (en) * 2004-12-28 2006-06-29 Varkey Joseph P Electrical cables
US7119283B1 (en) * 2005-06-15 2006-10-10 Schlumberger Technology Corp. Enhanced armor wires for electrical cables
US20070107921A1 (en) * 2005-11-16 2007-05-17 Service Wire Company Adjustable Speed Drive Cable and Shield Termination
US20080142244A1 (en) * 2004-12-01 2008-06-19 Philip Head Cables
US20090194314A1 (en) * 2008-01-31 2009-08-06 Joseph Varkey Bimetallic Wire with Highly Conductive Core in Oilfield Applications
WO2011076868A1 (en) * 2009-12-22 2011-06-30 Geoservices Equipements Connecting head for connecting a cable and a downhole tool and associated intervention device
CN102682914A (en) * 2012-05-15 2012-09-19 大连方元特种电缆制造有限公司 Load bearing cable
CN103748638A (en) * 2011-08-24 2014-04-23 松下电器产业株式会社 cable
US20150090487A1 (en) * 2012-05-22 2015-04-02 Telefonaktiebolaget L M Ericsson (Publ) Cable for powering of mast mounted radio equipment
EP2659091A4 (en) * 2010-12-30 2016-04-13 Baker Hughes Inc Method and devices for terminating communication between a node and a carrier
US9601237B2 (en) 2014-03-03 2017-03-21 Baker Hughes Incorporated Transmission line for wired pipe, and method
US20180068764A1 (en) * 2016-09-05 2018-03-08 Coreteq Systems Limited Conductor and conduit systems

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2760078A (en) * 1952-05-27 1956-08-21 Well Surveys Inc Conduction counter for radioactivity well logging
US3253653A (en) * 1963-09-18 1966-05-31 Sr Warren K Layne Well tool for placing tubular element in well
US3517740A (en) * 1968-05-27 1970-06-30 Schlumberger Technology Corp Apparatus for selectively releasing cable-suspended well tools
US3573349A (en) * 1969-05-02 1971-04-06 Schlumberger Technology Corp Electrical suspension cable for facilitating the descent of well tools suspended therefrom through deviated well bores
US3584139A (en) * 1968-12-27 1971-06-08 Bell Telephone Labor Inc Torque-balanced communications cable

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2760078A (en) * 1952-05-27 1956-08-21 Well Surveys Inc Conduction counter for radioactivity well logging
US3253653A (en) * 1963-09-18 1966-05-31 Sr Warren K Layne Well tool for placing tubular element in well
US3517740A (en) * 1968-05-27 1970-06-30 Schlumberger Technology Corp Apparatus for selectively releasing cable-suspended well tools
US3584139A (en) * 1968-12-27 1971-06-08 Bell Telephone Labor Inc Torque-balanced communications cable
US3573349A (en) * 1969-05-02 1971-04-06 Schlumberger Technology Corp Electrical suspension cable for facilitating the descent of well tools suspended therefrom through deviated well bores

Cited By (62)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4028660A (en) * 1973-12-21 1977-06-07 Texaco Inc. Well logging method and means using an armored multiconductor coaxial cable
US3878444A (en) * 1974-01-21 1975-04-15 Tesco Eng Co Method and apparatus for protecting electrical field cables against rodent damage
US4247504A (en) * 1976-10-18 1981-01-27 Oy Nokia Ab Method of manufacturing plastic covered highvoltage cables
US4250351A (en) * 1979-08-08 1981-02-10 The Bendix Corporation Cable construction
DE3028113A1 (en) * 1979-08-08 1981-02-26 Bendix Corp electrical cable
EP0034800B1 (en) * 1980-02-25 1984-12-19 LES CABLES DE LYON Société anonyme dite: Prospecting cable
FR2476897A1 (en) * 1980-02-25 1981-08-28 Cables De Lyon Geoffroy Delore Cable for prospecting
US4378464A (en) * 1980-02-25 1983-03-29 Les Cables De Lyon Cable for prospecting
US4415895A (en) * 1981-02-11 1983-11-15 Dresser Industries, Inc. Well logging data transmission system
EP0068308A1 (en) * 1981-06-18 1983-01-05 LES CABLES DE LYON Société anonyme dite: Electro-mechanical cable resistant to elevated temperature and pressure, and method for its manufacture
FR2508227A1 (en) * 1981-06-18 1982-12-24 Cables De Lyon Geoffroy Delore Cable electromechanical resistant to high temperatures and pressures and process for its manufacture
US4620189A (en) * 1983-08-15 1986-10-28 Oil Dynamics, Inc. Parameter telemetering from the bottom of a deep borehole
FR2578351A1 (en) * 1985-03-01 1986-09-05 Int Standard Electric Corp Cable logging for oil wells
US4624308A (en) * 1985-04-15 1986-11-25 Halliburton Company Sour gas cable head
US4648444A (en) * 1985-04-17 1987-03-10 Halliburton Company Tensile ring cable head assembly
US4866607A (en) * 1985-05-06 1989-09-12 Halliburton Company Self-contained downhole gauge system
US4663628A (en) * 1985-05-06 1987-05-05 Halliburton Company Method of sampling environmental conditions with a self-contained downhole gauge system
US4709234A (en) * 1985-05-06 1987-11-24 Halliburton Company Power-conserving self-contained downhole gauge system
US5337234A (en) * 1985-05-06 1994-08-09 Halliburton Company Self-contained downhole gauge system
US5153832A (en) * 1985-05-06 1992-10-06 Halliburton Company Self-containing downhole gauge system
US4665398A (en) * 1985-05-06 1987-05-12 Halliburton Company Method of sampling and recording information pertaining to a physical condition detected in a well bore
US4855732A (en) * 1987-03-27 1989-08-08 Institut Francais Du Petrole System for the transmission of signals between a reception assembly lowered into a well and a central control and recording laboratory
EP0285507A1 (en) * 1987-03-27 1988-10-05 Institut Francais Du Petrole Signal transmission system between a receiver unit down in a borehole and a central control and receiving station
FR2613159A1 (en) * 1987-03-27 1988-09-30 Inst Francais Du Petrole signal transmission system between a reception assembly lowered into a well and a central laboratory control and recording
US4910360A (en) * 1989-01-05 1990-03-20 Noel Lee Cable assembly having an internal dielectric core surrounded by a conductor
US4937401A (en) * 1989-01-05 1990-06-26 Noel Lee Signal cable assembly including bundles of wire strands of different gauges
US5086196A (en) * 1990-08-09 1992-02-04 Camco, Incorporated Electro-mechanical cable for cable deployed pumping systems
US5184328A (en) * 1992-03-04 1993-02-02 Navigation Technology Corporation Underwater release mechanism
US6255592B1 (en) 1998-05-04 2001-07-03 Gamut Technology, Inc. Flexible armored communication cable and method of manufacture
EP1065674A2 (en) * 1999-06-30 2001-01-03 Read Well Services Limited Downhole cable
EP1065674A3 (en) * 1999-06-30 2001-12-05 Read Well Services Limited Downhole cable
US6704670B2 (en) * 2002-04-16 2004-03-09 Agilent Technologies, Inc. Systems and methods for wideband active probing of devices and circuits in operation
US20030195713A1 (en) * 2002-04-16 2003-10-16 Mctigue Michael T. Systems and methods for wideband active probing of devices and circuits in operation
US20040060726A1 (en) * 2002-09-30 2004-04-01 Orlet Michael W. Dual stress member conductive cable
US6960724B2 (en) * 2002-09-30 2005-11-01 Schlumberger Technology Corporation Dual stress member conductive cable
EP1555479A4 (en) * 2002-10-21 2008-09-24 K Ltd Ag Power supply wire, wire grip, electric appliance suspending device, and electric appliance suspending method
US20060000634A1 (en) * 2002-10-21 2006-01-05 A. G. K. Ltd Power supply wire, wire grip, electric appliance suspending device, and electric appliance suspending method
EP1555479A1 (en) * 2002-10-21 2005-07-20 A.G.K. Ltd. Power supply wire, wire grip, electric appliance suspending device, and electric appliance suspending method
US7335836B2 (en) * 2002-10-21 2008-02-26 A.G.K., Ltd. Power supply wire, wire grip, electric appliance suspending device, and electric appliance suspending method
US20040140119A1 (en) * 2003-01-22 2004-07-22 Varkey Joseph P. High temperature electrical cable having interstitial filler
US7009113B2 (en) * 2003-01-22 2006-03-07 Schlumberger Technology Corporation High temperature electrical cable having interstitial filler
US20080142244A1 (en) * 2004-12-01 2008-06-19 Philip Head Cables
US7541543B2 (en) * 2004-12-01 2009-06-02 Philip Head Cables
US20060137895A1 (en) * 2004-12-28 2006-06-29 Varkey Joseph P Electrical cables
US7288721B2 (en) * 2004-12-28 2007-10-30 Schlumberger Technology Corporation Electrical cables
US20070102186A1 (en) * 2005-06-15 2007-05-10 Joseph Varkey Enhanced armor wires for wellbore cables
US7294787B2 (en) * 2005-06-15 2007-11-13 Schlumberger Technology Corporation Enhanced armor wires for wellbore cables
US20070003780A1 (en) * 2005-06-15 2007-01-04 Varkey Joseph P Bimetallic materials for oilfield applications
US7119283B1 (en) * 2005-06-15 2006-10-10 Schlumberger Technology Corp. Enhanced armor wires for electrical cables
US7309835B2 (en) * 2005-11-16 2007-12-18 Service Wire Company Adjustable speed drive/variable frequency drive cable, connector and termination system
US20070107921A1 (en) * 2005-11-16 2007-05-17 Service Wire Company Adjustable Speed Drive Cable and Shield Termination
US20090194314A1 (en) * 2008-01-31 2009-08-06 Joseph Varkey Bimetallic Wire with Highly Conductive Core in Oilfield Applications
US9068412B2 (en) 2009-12-22 2015-06-30 Geoservices Equipments Connecting head for connecting a cable and a downhole tool and associated intervention device
US9441431B2 (en) 2009-12-22 2016-09-13 Geoservices Equipements Intervention device for use in a fluid exploitation well in the subsoil, and associated intervention assembly
WO2011076868A1 (en) * 2009-12-22 2011-06-30 Geoservices Equipements Connecting head for connecting a cable and a downhole tool and associated intervention device
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CN103748638A (en) * 2011-08-24 2014-04-23 松下电器产业株式会社 cable
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US20150090487A1 (en) * 2012-05-22 2015-04-02 Telefonaktiebolaget L M Ericsson (Publ) Cable for powering of mast mounted radio equipment
US9601237B2 (en) 2014-03-03 2017-03-21 Baker Hughes Incorporated Transmission line for wired pipe, and method
US20180068764A1 (en) * 2016-09-05 2018-03-08 Coreteq Systems Limited Conductor and conduit systems

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