Patents by Inventor Dennis R. Wilson

Dennis R. Wilson 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).

  • Patent number: 8770270
    Abstract: The invention relates to a double string slurry pump for pumping liquids to the surface of a hydrocarbon well and especially a hydrocarbon well that is producing both natural gas and liquid fluids. The double string slurry pump includes a hollow tube that raises and lowers the plunger and carries the liquids to the surface and an outer tube receives liquids down into the well to periodically flush area around the pump to stir up particles and fines for conveyance out of the wellbore with the liquids. The additional conduit for flushing may be used to provide biocides, solvents or other treatments including with liquids at elevated temperature to create desired results or changes downhole. Moreover, the additional conduit may be provided with ports to provide access to the interior of the gas production path to provide such treatments above the well. The natural gas is produced through the annulus between wellbore casing and the outer production tubing string.
    Type: Grant
    Filed: March 30, 2011
    Date of Patent: July 8, 2014
    Assignee: ConocoPhillips Company
    Inventor: Dennis R. Wilson
  • Patent number: 8708039
    Abstract: The invention relates to an arrangement for positively pumping liquids to the surface of a hydrocarbon well where the hydrocarbon well has bee previously completed with a permanent packer and tailpipe. A rod pump having a plunger connected to a hollow rod string can positively pump the liquids collecting at the bottom of the well while the natural gas is produced up the annulus between the production tubing and the hollow rod string. In this invention, the tail pipe is perforated above the rod pump and below the packer to all the natural gas into the production tubing.
    Type: Grant
    Filed: September 30, 2010
    Date of Patent: April 29, 2014
    Assignee: ConocoPhillips Company
    Inventor: Dennis R. Wilson
  • Patent number: 8708040
    Abstract: A double string pump transports liquids to the surface of a hydrocarbon well including a hydrocarbon well that is producing both natural gas and liquid fluids. The double string pump includes a hollow tube that raises and lowers the plunger and carries the liquids to the surface and an outer tube receives liquids down into the well to lubricate the moving parts and flush particles from areas prone to wear and back toward the production tube. The natural gas is produced through the annulus between wellbore casing and the outer production tubing string.
    Type: Grant
    Filed: September 30, 2010
    Date of Patent: April 29, 2014
    Assignee: ConocoPhillips Company
    Inventor: Dennis R. Wilson
  • Patent number: 8651191
    Abstract: A slim hole production system for pumping liquids to the surface of a hydrocarbon well and especially a hydrocarbon well that is producing both natural gas and liquids where the diameter of the hole in the production area is too small to get production tubing and a sucker rod into a productive arrangement. The slim hole pump includes a hollow tube that raises and lowers the plunger and carries the liquids to the surface and uses the annulus to produce the gas.
    Type: Grant
    Filed: September 30, 2010
    Date of Patent: February 18, 2014
    Assignee: ConocoPhillips Company
    Inventor: Dennis R. Wilson
  • Patent number: 8276658
    Abstract: This invention relates to a downhole hydraulic pump for hydrocarbon wells that is installed and operated using coiled tubing. The downhole hydraulic pump is driven by a hydraulic power system positioned at the surface and connected through a closed loop system using multiple channels of the coiled tubing. The coiled tubing is formed of a combination of channels including strength component such as steel and having one channel that is at least lined with a non-metallic corrosion resistant surface where clean hydraulic fluid is carried from the hydraulic power system to the downhole hydraulic pump through the non-metallic corrosion resistant channel so to be less likely to pick up manufacturing and environmental particulates and corrosion by-products within the channel carrying the hydraulic fluid to the downhole hydraulic pump. The non-metallic corrosion resistant lined channel may comprise plastic pipe.
    Type: Grant
    Filed: December 11, 2009
    Date of Patent: October 2, 2012
    Assignee: ConocoPhillips Company
    Inventors: James C. Cox, Dennis R. Wilson, Christine A. Buczek, John C. Patterson, Thomas E. Nations, Curtis G. Blount
  • Publication number: 20120080199
    Abstract: The invention relates to a double string slurry pump for pumping liquids to the surface of a hydrocarbon well and especially a hydrocarbon well that is producing both natural gas and liquid fluids. The double string slurry pump includes a hollow tube that raises and lowers the plunger and carries the liquids to the surface and an outer tube receives liquids down into the well to periodically flush area around the pump to stir up particles and fines for conveyance out of the wellbore with the liquids. The additional conduit for flushing may be used to provide biocides, solvents or other treatments including with liquids at elevated temperature to create desired results or changes downhole. Moreover, the additional conduit may be provided with ports to provide access to the interior of the gas production path to provide such treatments above the well. The natural gas is produced through the annulus between wellbore casing and the outer production tubing string.
    Type: Application
    Filed: March 30, 2011
    Publication date: April 5, 2012
    Applicant: CONOCOPHILLIPS COMPANY
    Inventor: Dennis R. Wilson
  • Publication number: 20110162841
    Abstract: The invention relates to dispensing slow release chemicals for inhibiting the formation of scale, corrosion or other precipitates in hydrocarbon wells. The chemical is provided into a dispenser positioned for at least nearly continuous exposure to liquid preferably in the active water phase. The active water phase is generally just below the inlet into production tubing.
    Type: Application
    Filed: October 7, 2010
    Publication date: July 7, 2011
    Applicant: CONOCOPHILLIPS COMPANY
    Inventor: Dennis R. Wilson
  • Publication number: 20110073318
    Abstract: The invention relates to an arrangement for positively pumping liquids to the surface of a hydrocarbon well where the hydrocarbon well has bee previously completed with a permanent packer and tailpipe. A rod pump having a plunger connected to a hollow rod string can positively pump the liquids collecting at the bottom of the well while the natural gas is produced up the annulus between the production tubing and the hollow rod string. In this invention, the tail pipe is perforated above the rod pump and below the packer to all the natural gas into the production tubing.
    Type: Application
    Filed: September 30, 2010
    Publication date: March 31, 2011
    Applicant: CONOCOPHILLIPS COMPANY
    Inventor: Dennis R. Wilson
  • Publication number: 20110073317
    Abstract: The invention relates to a slim hole production system for pumping liquids to the surface of a hydrocarbon well and especially a hydrocarbon well that is producing both natural gas and liquid liquids where the diameter of the hole in the production area is too small to get production tubing and a sucker rod into a productive arrangement. The slim hole pump includes a hollow tube that raises and lowers the plunger and carries the liquids to the surface and uses the annulus to produce the gas.
    Type: Application
    Filed: September 30, 2010
    Publication date: March 31, 2011
    Applicant: CONOCOPHILLIPS COMPANY
    Inventor: Dennis R. Wilson
  • Publication number: 20110073319
    Abstract: The invention relates to a double string pump for pumping liquids to the surface of a hydrocarbon well and especially a hydrocarbon well that is producing both natural gas and liquid fluids. The double string pump includes a hollow tube that raises and lowers the plunger and carries the liquids to the surface and an outer tube receives liquids down into the well to lubricate the moving parts and flush particles from areas prone to wear and back toward the production tube. The natural gas is produced through the annulus between wellbore casing and the outer production tubing string.
    Type: Application
    Filed: September 30, 2010
    Publication date: March 31, 2011
    Applicant: ConocoPhillips Company
    Inventor: Dennis R. Wilson
  • Publication number: 20110061873
    Abstract: This invention relates to a coiled tubing installed and operated hydraulically driven downhole pump for hydrocarbon wells and especially hydrocarbon gas wells that are prone to produce fluids that choke gas production. The hydraulically driven downhole pump is driven by a closed loop surface positioned hydraulic power system. Should the hydraulically driven downhole pump become inoperative, it may be quickly retrieved and immediately replaced using a coiled tubing unit as compared to a workover rig. A coiled tubing unit is able to pull the coiled tubing string and re-install the string quite rapidly because the coiled tubing does not have joints that need to be disassembled or reconnected. The manpower needs and costs for replacement are considerably less and lost production of the well is substantially reduced.
    Type: Application
    Filed: January 30, 2009
    Publication date: March 17, 2011
    Applicant: CONOCOPHILLIPS COMPANY
    Inventors: John C. Patterson, Thomas E. Nations, Curtis G. Blount, Dennis R. Wilson
  • Patent number: 7870899
    Abstract: The present disclosure relates to a pump mechanism driven by differential pressure conditions and method for delivery of materials. In one embodiment, the pump mechanism may be used to deliver treatment chemical to a plunger apparatus or directly to a wellbore by exploiting pressure conditions found at a well. In certain embodiments, the pump mechanism is able to balance high pressure conditions available within a petroleum formation against low pressure conditions present in a common flow line serving the well. In so balancing these pressures, the pump mechanism is able to automatically tune itself to the needs of the well, ensuring continued operation over a wider range of operating conditions. The pump mechanism has the further advantages of lower operation costs and less environmental impact as compared with existing pumps.
    Type: Grant
    Filed: June 18, 2007
    Date of Patent: January 18, 2011
    Assignee: ConocoPhillips Company
    Inventor: Dennis R. Wilson
  • Patent number: 7798222
    Abstract: A system for preventing the migration of unconsolidated and/or loosely consolidated material into a wellbore. Such prevention is accomplished by introducing a well treatment medium comprising an expandable fluid and a bonding agent into an unconsolidated zone proximate the wellbore. The expandable fluid is allowed to expand and flow through the unconsolidated zone while the bonding agent cures, thereby forming a consolidated zone having sufficient porosity to allow fluid flow therethrough.
    Type: Grant
    Filed: November 1, 2006
    Date of Patent: September 21, 2010
    Assignee: ConocoPhillips Company
    Inventor: Dennis R. Wilson
  • Publication number: 20100230112
    Abstract: This invention relates to a downhole hydraulic pump for hydrocarbon wells that is installed and operated using coiled tubing. The downhole hydraulic pump is driven by a hydraulic power system positioned at the surface and connected through a closed loop system using multiple channels of the coiled tubing. The coiled tubing is formed of a combination of channels including strength component such as steel and having one channel that is at least lined with a non-metallic corrosion resistant surface where clean hydraulic fluid is carried from the hydraulic power system to the downhole hydraulic pump through the non-metallic corrosion resistant channel so to be less likely to pick up manufacturing and environmental particulates and corrosion by-products within the channel carrying the hydraulic fluid to the downhole hydraulic pump. The non-metallic corrosion resistant lined channel may comprise plastic pipe.
    Type: Application
    Filed: December 11, 2009
    Publication date: September 16, 2010
    Applicant: CONOCOPHILLIPS COMPANY
    Inventors: James C. Cox, Dennis R. Wilson, Christine A. Buczek, John C. Patterson, Thomas E. Nations, Curtis G. Blount
  • Patent number: 7757770
    Abstract: A method of stimulating gas production from a coalbed methane well that involves injecting a foam forming liquid and an expandable fluid into a coal seam proximate the wellbore. When the wellbore pressure is reduced, at least a portion of the expandable fluid can vaporize, which can generate foam that aids in the formation and/or enlargement of a cavity in the coal seam proximate the wellbore.
    Type: Grant
    Filed: February 27, 2007
    Date of Patent: July 20, 2010
    Assignee: ConocoPhillips Company
    Inventor: Dennis R. Wilson
  • Patent number: 7677317
    Abstract: The invention relates to a method to clean a wellbore and the near wellbore area adjacent to the wellbore of a hydrocarbon bearing formation adjacent to the production zone of the wellbore. The invention includes a method to clean a casing inserted into a wellbore and a method for cleaning a wellbore of fracturing fluid, with or without proppant. Each of the methods includes the steps of injecting a treatment medium comprising liquid carbon dioxide into a wellbore where pressure within the wellbore is regulated to either maintain the treatment medium in the liquid state, or allow at least a portion of the treatment medium to vaporize upon introduction into the wellbore. The treatment medium vaporizes to loosen and/or entrain undesirable materials from within the wellbore or casing and escape through the wellhead, carrying with it the undesirable materials.
    Type: Grant
    Filed: December 18, 2006
    Date of Patent: March 16, 2010
    Assignee: ConocoPhillips Company
    Inventor: Dennis R. Wilson
  • Publication number: 20080308270
    Abstract: The present disclosure relates to a pump mechanism driven by differential pressure conditions and method for delivery of materials. In one embodiment, the pump mechanism may be used to deliver treatment chemical to a plunger apparatus or directly to a wellbore by exploiting pressure conditions found at a well. In certain embodiments, the pump mechanism is able to balance high pressure conditions available within a petroleum formation against low pressure conditions present in a common flow line serving the well. In so balancing these pressures, the pump mechanism is able to automatically tune itself to the needs of the well, ensuring continued operation over a wider range of operating conditions. The pump mechanism has the further advantages of lower operation costs and less environmental impact as compared with existing pumps.
    Type: Application
    Filed: June 18, 2007
    Publication date: December 18, 2008
    Applicant: CONOCOPHILLIPS COMPANY
    Inventor: Dennis R. Wilson
  • Publication number: 20080202757
    Abstract: A method of stimulating gas production from a coalbed methane well that involves injecting a foam forming liquid and an expandable fluid into a coal seam proximate the wellbore. When the wellbore pressure is reduced, at least a portion of the expandable fluid can vaporize, which can generate foam that aids in the formation and/or enlargement of a cavity in the coal seam proximate the wellbore.
    Type: Application
    Filed: February 27, 2007
    Publication date: August 28, 2008
    Applicant: CONOCOPHILLIPS COMPANY
    Inventor: Dennis R. Wilson
  • Publication number: 20080099200
    Abstract: A system for preventing the migration of unconsolidated and/or loosely consolidated material into a wellbore. Such prevention is accomplished by introducing a well treatment medium comprising an expandable fluid and a bonding agent into an unconsolidated zone proximate the wellbore. The expandable fluid is allowed to expand and flow through the unconsolidated zone while the bonding agent cures, thereby forming a consolidated zone having sufficient porosity to allow fluid flow therethrough.
    Type: Application
    Filed: November 1, 2006
    Publication date: May 1, 2008
    Applicant: CONOCOPHILLIPS COMPANY
    Inventor: Dennis R. Wilson
  • Patent number: 6856573
    Abstract: A column decoder cell layout for use in a 1T/1C ferroelectric memory array includes a first column decoder section having two input nodes for receiving a first input/output signal and a first inverted input/output signal, two output nodes for providing a fist bit line signal and a first inverted bit line signal, and a column decode node for receiving a column decode signal, a second column decoder section having two input nodes for receiving a second input/output signal and a second inverted input/output signal, two output nodes for providing a second bit line signal and a second inverted bit line signal, and a column decode node for receiving the column decode signal, wherein the width of the column decoder cell is substantially the same as the width of two columns of 1T/1C memory cells used in the array.
    Type: Grant
    Filed: March 13, 2003
    Date of Patent: February 15, 2005
    Assignee: Ramtron International Corporation
    Inventors: Judith E. Allen, Dennis R. Wilson, Joseph Perkalis