Patents by Inventor David H. Neuroth
David H. Neuroth has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 6769805Abstract: A heater cable is deployed in a well bore to elevate the temperature of the wellbore above the temperature of the surrounding fluid and the formation. One or more fiber optic strings are included in or carried by the heater cable which is placed along a desired length of the wellbore. At least one fiber optic string measures temperature of the heater cable at a plurality of spaced apart locations. Another string is utilized to determine the temperature of the wellbore. The heater cable is heated above the temperature of the well bore. The fluid flowing from the formation to the wellbore lowers the temperature of the cable at the inflow locations. The fiber optic string provides measurements of the temperature along the heater cable. The fluid flow is determined from the temperature profile of the heater cable provided by the fiber optic sensors.Type: GrantFiled: December 17, 2002Date of Patent: August 3, 2004Assignee: Sensor Highway LimitedInventors: Glynn R Williams, David H Neuroth, Larry V Dalrymple
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Patent number: 6695062Abstract: A method for manufacturing an electrical cable provides an electrical cable suitable for use in heating wells. An elastomeric jacket is extruded over insulated conductors. A stainless steel plate is rolled around the jacket to form a cylindrical coiled tubing having a seam. The seam is welded, then the tubing is swaged down to a lesser diameter to cause the tubing to frictionally grip the jacket. A recess may be formed in the jacket adjacent the seam to avoid heat damage from the welding process.Type: GrantFiled: January 14, 2002Date of Patent: February 24, 2004Assignee: Baker Hughes IncorporatedInventors: Larry V. Dalrymple, David H. Neuroth, Phillip R. Wilbourn, Don C. Cox, Thomson H. Wallace
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Publication number: 20030122535Abstract: A heater cable is deployed in a well bore to elevate the temperature of the wellbore above the temperature of the surrounding fluid and the formation. One or more fiber optic strings are included in or carried by the heater cable which is placed along a desired length of the wellbore. At least one fiber optic string measures temperature of the heater cable at a plurality of spaced apart locations. Another string is utilized to determine the temperature of the wellbore. The heater cable is heated above the temperature of the well bore. The fluid flowing from the formation to the wellbore lowers the temperature of the cable at the inflow locations. The fiber optic string provides measurements of the temperature along the heater cable. The fluid flow is determined from the temperature profile of the heater cable provided by the fiber optic sensors.Type: ApplicationFiled: December 17, 2002Publication date: July 3, 2003Inventors: Glynn R. Williams, David H. Neuroth, Larry V. Dalrymple
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Patent number: 6585046Abstract: A method of heating gas being produced in a well reduces condensate occurring in the well. A cable assembly having at least one insulated conductor is deployed into the well while the well is still live. Electrical power is applied to the conductor to cause heat to be generated. Gas is allowed up past the cable assembly and out the wellhead. The heat retards condensation, which creates frictional losses in the gas flow.Type: GrantFiled: August 27, 2001Date of Patent: July 1, 2003Assignee: Baker Hughes IncorporatedInventors: David H. Neuroth, Phillip R. Wilbourn, Larry V. Dalrymple, Don C. Cox
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Publication number: 20030037927Abstract: A method for manufacturing an electrical cable provides an electrical cable suitable for use in heating wells. An elastomeric jacket is extruded over insulated conductors. A stainless steel plate is rolled around the jacket to form a cylindrical coiled tubing having a seam. The seam is welded, then the tubing is swaged down to a lesser diameter to cause the tubing to frictionally grip the jacket. A recess may be formed in the jacket adjacent the seam to avoid heat damage from the welding process.Type: ApplicationFiled: January 14, 2002Publication date: February 27, 2003Inventors: Larry V. Dalrymple, David H. Neuroth, Phillip R. Wilbourn, Don C. Cox, Thomson H. Wallace
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Patent number: 6497279Abstract: The present invention provides a heater cable (10) that may be deployed in a wellbore to elevate the temperature of the wellbore above the temperature of the surrounding fluid and the formation. One or more fiber optic strings are included in or are carried by the heater cable. The heater cable carrying the fiber optics is placed along the desired length of the wellbore. At least one fiber optic string measures temperature of the heater cable at a plurality of spaced apart locations. Another string may be utilized to determine the temperature of the wellbore. In one aspect of this invention, the heater cable is heated above the temperature of the wellbore. The fluid flowing from the formation to the wellbore lowers the temperature of the cable at the inflow locations. The fiber optic string provides measurements of the temperature along the heater cable. The fluid flow is determined from the temperature profile of the heater cable provided by the fiber optic sensors.Type: GrantFiled: May 22, 2001Date of Patent: December 24, 2002Assignee: Sensor Highway LimitedInventors: Glynn R Williams, David H Neuroth, Larry V Dalrymple
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Patent number: 6479752Abstract: Helically wound coil springs are wrapped around and attached at regular intervals to a cable, which is positioned within tubing. The support springs are attached to the cable to provide support to the cable. The upper section of each support spring is affixed to the cable. A remainder of each spring is formed in a long open helix facing downward when the tubing is installed in a well. The open helix portion of the spring is larger than the inside diameter of the coiled tubing. During placement into the coiled tubing, the springs elongate and decrease in diameter. When the coiled tubing is installed vertically within a well, the springs compress due to the weight of the cable and engage the inside surface of the coiled tubing with a substantial portion of their length, thereby supporting the cable.Type: GrantFiled: April 7, 1998Date of Patent: November 12, 2002Assignee: Baker Hughes IncorporatedInventors: David H. Neuroth, Charles C. Collie, Timothy W. Pinkston
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Publication number: 20020050361Abstract: A submersible-pump assembly has an electric motor and pump adapted to be lowered into a string of production tubing. A permanently-deployed power cable is located in the annulus located between an outer surface of the production tubing and an inner surface of a string of casing. A set of wet-mateable power connectors provide electricity to the motor through hydraulically-actuated pins carried in hydraulic cylinders mounted to the outer surface of the production tubing. The power cable is connected to each pin for carrying electricity from the surface of the well to the pins. The pins are moved inward toward the motor to engage receptacles located in the outer surface of the motor. Alternatively, the power connectors may be a receptacle that receives a stab mounted to the tubing.Type: ApplicationFiled: October 1, 2001Publication date: May 2, 2002Inventors: Christopher K. Shaw, Earl B. Brookbank, David H. Neuroth
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Patent number: 6352113Abstract: An electrical submersible pump assembly supported on coiled or continuous tubing. A power cable extends through the coiled tubing for supplying electrical power to the pump assembly. The cable has an outer diameter that is less than the inner diameter of the tubing, resulting in a cable annulus surrounding the cable. Supports attached to the cable frictionally or mechanically engage the cable with the coiled tubing to support the weight of the cable with the tubing. The supports define passages that allow fluid to flow by within the cable annulus from the surface. A port is provided in the coiled tubing at the electrical submersible pump assembly for discharging fluid pumped from the surface down the cable annulus. A tube may be provided to extend downward from the port alongside of the electrical submersible pump. Fluid may be pumped from an upper end of the well down the cable annulus and out of the port to free up sand accumulation on the packer.Type: GrantFiled: October 22, 1999Date of Patent: March 5, 2002Assignee: Baker Hughes IncorporatedInventor: David H. Neuroth
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Publication number: 20020023751Abstract: A method of heating gas being produced in a well reduces condensate occurring in the well. A cable assembly having at least one insulated conductor is deployed into the well while the well is still live. Electrical power is applied to the conductor to cause heat to be generated. Gas is allowed up past the cable assembly and out the wellhead. The heat retards condensation, which creates frictional losses in the gas flow.Type: ApplicationFiled: August 27, 2001Publication date: February 28, 2002Inventors: David H. Neuroth, Phillip R. Wilborn, Larry V. Dalrymple, Don C. Cox
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Publication number: 20010050111Abstract: Armored control cables are described. The control cables include fluid communication tubes and a metal armor layer that surrounds each of the fluid communication tubes. In one described embodiment, there are three fluid communication tubes that are disposed in a parallel relation and maintained in contact with one another. The metal armor layer is in contact with the outer surface of each of the three tubes and is preferable formed of spirally wound metal tape.Type: ApplicationFiled: July 9, 2001Publication date: December 13, 2001Inventors: David H. Neuroth, Thomson Hall Wallace
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Patent number: 6328111Abstract: A method for installing a submersible pump assembly that allows deployment in a live well under pressure. In some of the embodiments, a pressure barrier is installed in the well lower than a length of the submersible pump assembly. The submersible pump assembly is lowered on a line into the chamber, then a lubricator at the surface seals around the line by allowing the pressure barrier to be released and the submersible pump assembly to be lowered into the well to a desired depth. Preferably, there is a lower pressure barrier in the well. The upper pressure barrier may be a packer that may be collapsed and retrieved alongside the submersible pump assembly. The pressure barrier also may be a packer that is temporarily set in the well, then engaged by the submersible pump assembly, with the pump assembly and packer then being lowered as a unit to a further depth in the well.Type: GrantFiled: September 27, 1999Date of Patent: December 11, 2001Assignee: Baker Hughes IncorporatedInventors: John L. Bearden, Kenneth T. Bebak, Earl B. Brookbank, Don C. Cox, Ronald S. Fordyce, David H. Neuroth, Steven K. Tetzlaff
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Patent number: 6192983Abstract: This invention provides oilfield spooled coiled tubing production and completion strings assembled at the surface to include sensors and one or more controlled devices which can be tested from a remote location. The devices may have upsets in the coiled tubing. The strings preferably include conductors and hydraulic lines in the coiled tubing. The conductors provide power and data communication between the sensors, devices and surface instrumentation. The coiled tubing strings are preferably tested at the assembly site and transported to the well site one reels. The coiled tubing strings are inserted and retrieved from the wellbores utilizing an adjustable opening injector head system. This invention also provides method of making electro-coiled-tubing wherein upper and lower adapters are connected to the coiled tubing and tested prior to transporting the string to the wellbore. The string preferably includes pressure barriers at both ends of the string.Type: GrantFiled: May 28, 1999Date of Patent: February 27, 2001Assignee: Baker Hughes IncorporatedInventors: David H. Neuroth, Earl B. Brookbank, Eugene D. Bespalov, Tim Jackson, Paulo S. Tubel
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Patent number: 6143988Abstract: An electrical line for installation in a well for transmitting power to a well pump includes a string of coiled tubing. An electrical cable having insulated electrical conductors embedded within an elastomeric jacket extends longitudinally through the interior passage of the tubing. Retainers are mounted to the electrical cable and spaced longitudinally apart from each other. An indentation is integrally formed in the tubing adjacent each of the retainers. Each indentation protrudes into the interior passage of the tubing and creates a ledge which is contacted by one of the retainers when the electrical line is installed in the well. The indentations and retainers transfer weight of the electrical cable to the tubing. Weld material is filled into the depression on the surface created by each indentation.Type: GrantFiled: February 6, 1998Date of Patent: November 7, 2000Assignee: Baker Hughes IncorporatedInventors: David H. Neuroth, Larry Dalrymple, Earl B. Brookbank, Tim W. Pinkston, Don C. Cox
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Patent number: 5821452Abstract: An electrical line for a well pump has elastomeric supports clamped to the exterior of electrical cable for supporting the cable within coiled tubing. The cable supports have an elastomeric member that swells when contacted with a hydrocarbon liquid. Each expansion member is clamped to the cable exterior by retainers located at the ends. The expansion members are spaced apart longitudinally along the cable, and then the cable is inserted into the coiled tubing. Hydrocarbon liquid is pumped through the coiled tubing to cause the expansion members to swell into frictional engagement with the coiled tubing. The retainers direct the swelling laterally into tight contact with the coiled tubing.Type: GrantFiled: March 14, 1997Date of Patent: October 13, 1998Assignee: Baker Hughes IncorporatedInventors: David H. Neuroth, Don C. Cox, Earl B. Brookbank
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Patent number: 5782301Abstract: A heater cable is strapped alongside tubing in a well to heat the production fluids flowing through the tubing. The heater cable has three copper conductors surrounded by a thin electrical insulation layer. An extrusion of lead forms a protective layer over the insulation layers. The lead sheaths have flat sides which abut each other to increase heat transfer. A metal armor is wrapped around the lead sheaths of the three conductors in metal-to-metal contact. Three phase power is supplied to the conductors, causing heat to be generated which transmits through the lead sheaths and armor to the tubing.Type: GrantFiled: October 9, 1996Date of Patent: July 21, 1998Assignee: Baker Hughes IncorporatedInventors: David H. Neuroth, Larry V. Dalrymple, Robert Bailey
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Patent number: 5528824Abstract: A cable for a submersible pump has three insulated power conductors assembled in a flat configuration. The power conductors are wrapped with an inner armor such as a metal strip. An auxiliary line is placed alongside the inner armor and wrapped in an outer armor. The outer armor is also a metal strip.Type: GrantFiled: October 5, 1994Date of Patent: June 25, 1996Assignee: Baker Hughes IncorporatedInventors: Roger B. Anthony, David H. Neuroth
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Patent number: 5431759Abstract: An electrical cable and a method for manufacturing the electrical cable are provided in which a plurality of insulated conductors have a protective jacket extruded thereabout, the protective jacket having an exterior ribbed surface which includes a plurality of longitudinally extending ribs between which extend a plurality of thermal expansion voids. The protective jacket is formed from a thermally set elastomeric material which is partially cured, and then a protective exterior armor is helically wrapped around the exteriorly ribbed surface of the elastomeric, protective jacket. Then, the electric cable is heated to an elevated temperature for a period of time which is sufficient for fully curing the elastomeric protective jacket formed therein.Type: GrantFiled: February 22, 1994Date of Patent: July 11, 1995Assignee: Baker Hughes Inc.Inventor: David H. Neuroth
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Patent number: 5426264Abstract: An electrical cable for use in submersible well pumps in oil and gas well environments is provided having an electrical conductor core which is surrounded by an insulating layer of cross-linked polyethylene. A barrier layer surrounds the cross-linked polyethylene insulating layer. The barrier layer is impermeable to oil and other liquid hydrocarbons, but is permeable to low molecular gases. The barrier layer is preferably formed from a fluoropolymer and is surrounded by a polymeric protective layer. An adhesive layer attaches the barrier layer to the insulating layer.Type: GrantFiled: January 18, 1994Date of Patent: June 20, 1995Assignee: Baker Hughes IncorporatedInventors: David W. Livingston, David H. Neuroth, David G. Korte
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Patent number: 5414217Abstract: An electrical cable for a submersible well pump is provided which is resistant to attack by hydrogen sulfide and which is less susceptible to damage from expanding gases during decompression. The electrical cable has a central copper conductor core. The conductor core is surrounded by a layer of electrical insulation material of either thermosetting or thermoplastic material. Surrounding the insulation material is a polymeric, low permeable layer having a hydrogen sulfide permeability rate which is substantially lower than the insulation material. A metal tape layer, such as lead tape, surrounds the low permeable layer. One or more conductor cores together with the insulation, low permeable layer and metal tape layer can be embedded in an elastomeric jacket and provided with an outer metal armor to provide a single electrical cable.Type: GrantFiled: September 10, 1993Date of Patent: May 9, 1995Assignee: Baker Hughes IncorporatedInventors: David H. Neuroth, Thomson H. Wallace