Abstract:
The cables include belted insulated conductors, a compression and creep resistant jacket surrounding the insulated conductors, a filler material and compression resistant filler rods placed in interstitial spaces formed between the compression and creep resistant jacket and the insulated conductors, and at least one layer of armor wires surrounding the insulated conductor and compression and creep resistant jacket. The filler material may be a non-compressible filler material.
Abstract:
A motor winding wire. The motor winding wire may be configured for use in, and direct exposure to, a hydrocarbon environment. The motor winding wire may be electrically insulated by one polymer layer, whereas another, outer, polymer layer is employed to provide moisture resistance as well as other contaminant and hydrocarbon environment shielding to the underlying layer. Additionally, this manner of polymer layering over the motor winding wire is achieved in a manner cognizant of the limited dimension of the motor winding wire.
Abstract:
A heating and distributed-temperature-sensor cable permanently fixed in a wellbore that permits known amounts of heat to be introduced to subsurface formations and improved temperature measurement thereof. The heat is introduced into a target zone of the wellbore by forming the cable in two sections: an upper section that carries an electrical current without generating significant amounts of heat, and a lower section that generates heat from the electrical current. Continuous distributed-temperature-sensing is performed through measuring various scattering mechanism in optical fibers that run the length of the cable.
Abstract:
The present invention relates to methods of manufacturing tapeless cable assemblies. The methods generally include providing a plurality of adjacent conductor cables, followed by applying a cross-linkable first material around the plurality of conductor cables and in the interstitial openings occurring between the cables. Cross-linking can be initiated by applying a second material which facilitates cross-linking of the first material or by other means such as exposing the material to ultraviolet radiation. The wrapped assembly is then welded to form a core assembly. The disclosed manufacturing methods do no require a tape, thereby shortening the manufacturing process and reducing the manufacturing costs.
Abstract:
Disclosed are electric cables with improved armor wires used with wellbore devices to analyze geologic formations adjacent a wellbore. The cables include at least one insulated conductor, and one or more armor wires surrounding the insulated conductor. The armor wires include a low density core surrounded by a corrosion resistant alloy clad, where the alloy clad includes such alloys as beryllium-copper based alloys, nickel-chromium based alloys, superaustenitic stainless steel alloys, nickel-cobalt based alloys, nickel-molybdenum-chromium based alloys, and the like. The low density core may be based upon titanium or titanium alloys. The cables of the invention may be any useful electric cable design, including monocables, quadcables, heptacables, quadcables, slickline cables, multiline cables, coaxial cables, or seismic cables.
Abstract:
Disclosed are methods of manufacturing electrical cables. In one embodiment of the invention, method for manufacturing a wellbore cable includes providing at least one insulated conductor, extruding a first polymeric material layer over the insulated conductor, serving a first layer of armor wires around the polymeric material and embedding the armor wires in the first polymeric material by exposure to an electromagnetic radiation source, followed by and extruding a second polymeric material layer over the first layer of armor wires embedded in the first polymeric material layer. Then, a second layer of armor wires may be served around the second polymeric material layer, and embedded therein by exposure to an electromagnetic radiation source. Finally, a third polymeric layer may be extruded around the second layer of armor wires to form a polymeric jacket.
Abstract:
Wellbore electrical cables according to the invention include at least one insulated conductor, at least one layer of armor wires surrounding the insulated conductor, and a polymeric material disposed in the interstitial spaces formed between armor wires and interstitial spaces formed between the armor wire layer and insulated conductor which may further include wear resistance particles or even short fibers, and the polymeric material may further form a polymeric jacket around an outer, layer of armor wires. The insulated conductor is formed from a plurality of metallic conductors encased in an insulated jacket. The invention also discloses a method of preparing a cable by extruding first layer of polymeric material upon at least one insulated conductor; serving a first layer of armor wires upon the polymeric material; softening the polymeric material to partially embed armor wires; extruding a second layer of polymeric material over the armor wires; serving a second layer outer armor wires thereupon; softening the polymeric material to partially embed the second armor wire layer; and optionally extruding a third layer of polymeric material over the outer armor wires embedded in the second layer of polymeric material. Further disclosed are methods of using the cables of the invention in seismic and wellbore operations, including logging operations.
Abstract:
An electrical cable is provided which includes an electrical conductor, a first insulating jacket disposed adjacent the electrical conductor and having a first relative permittivity, wherein the first insulating jacket is prepared from an admixture of: a polymer selected from the group consisting of polyaryletherether ketone polymer, polyphenylene sulfide polymer, polyether ketone, maleic anhydride modified polymers, Parmax® SRP polymers, and any mixtures thereof; and, a fluoropolymer additive. A second insulating jacket disposed adjacent the first insulating jacket and having a second relative permittivity that is less than the first relative permittivity, and wherein the insulating jacket is mechanically bonded to the second insulating jacket. In another aspect of the present invention, a method is provided for manufacturing a cable that includes providing an electrical conductor, extruding a first insulating jacket over the electrical conductor, and extruding a second insulating jacket thereon.
Abstract:
A cable component is provided that includes at least one optical fiber; and a two shaped profiles having inner and outer surfaces such that the inner surfaces combine to from an enclosure for the at least one optical fiber, wherein a first of the two shaped profiles has a cross sectional arc that is greater than a cross sectional arc of a second of the two shaped profiles.
Abstract:
A wireline cable includes an electrically conductive cable core for transmitting electrical power, an inner armor layer disposed around the cable core, and an outer armor layer disposed around the inner armor layer, wherein a torque on the cable is balanced by providing the outer armor layer with a predetermined amount of coverage less than an entire circumference of the inner armor layer, or by providing the outer armor layer and the inner armor layer with a substantially zero lay angle.