Patents by Inventor Rodger D. Lacy

Rodger D. Lacy 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: 6698521
    Abstract: A system for removing solid particulates from a production fluid. The system includes a solid separator to remove the solid particulates from the production fluid to reduce pump component wear. The system is disposed in a wellbore such that wellbore fluids are drawn into the solids separator before entering the submersible pump. Solid particulates are separated from the fluid that flows through the solids separator before entering the submersible pump. The solid particulates are routed past the submersible pump. The solid particulates may be reinjected into the fluid discharged from the pump.
    Type: Grant
    Filed: May 24, 2002
    Date of Patent: March 2, 2004
    Assignee: Schlumberger Technology Corporation
    Inventors: Peter Schrenkel, Jimmie H. Naylor, Roy R. Fleshman, Kevin T. Scarsdale, Rodger D. Lacy, Dwight Chilcoat
  • Publication number: 20020134554
    Abstract: A system for removing solid particulates from a production fluid. The system includes a solid separator to remove the solid particulates from the production fluid to reduce pump component wear. The system is disposed in a wellbore such that wellbore fluids are drawn into the solids separator before entering the submersible pump. Solid particulates are separated from the fluid that flows through the solids separator before entering the submersible pump. The solid particulates are routed past the submersible pump. The solid particulates may be reinjected into the fluid discharged from the pump.
    Type: Application
    Filed: May 24, 2002
    Publication date: September 26, 2002
    Inventors: Peter Schrenkel, Jimmie H. Naylor, Roy R. Fleshman, Kevin T. Scarsdale, Rodger D. Lacy, Dwight Chilcoat
  • Patent number: 6394183
    Abstract: A system for removing solid particulates from a production fluid. The system includes a solid separator to remove the solid particulates from the production fluid to reduce pump component wear. The system is disposed in a wellbore such that wellbore fluids are drawn into the solids separator before entering the submersible pump. Solid particulates are separated from the fluid that flows through the solids separator before entering the submersible pump. The solid particulates are routed past the submersible pump. The solid particulates may be reinjected into the fluid discharged from the pump.
    Type: Grant
    Filed: July 25, 2000
    Date of Patent: May 28, 2002
    Assignee: Schlumberger Technology Corporation
    Inventors: Peter Schrenkel, Jimmie H. Naylor, Roy R. Fleshman, Kevin T. Scarsdale, Rodger D. Lacy, Dwight Chilcoat
  • Patent number: 5431230
    Abstract: A crooked, slanted, cased wellbore extends downhole to a pay zone which is produced by a rod actuated downhole pump that lifts fluid from the bottom of the wellbore up through a tubing string to a wellhead. The pump is seated in a pump cavity, and the tubing string is tensioned at opposed ends while it is rotated. The upper end of the tubing string is attached to a fluid conveying swivel and a tubing rotator. A tubing anchor having a fluid conveying rotatable mandrel is attached adjacent to and forms part of the lower end of the tubing string by which the lower end of the tubing string is rotatably tensioned and releasably affixed to the casing in proximity to the lower end of the wellbore. A plurality of radially active slips are actuated in response to manipulation of the tubing string to extend the slips into engagement with the casing wall and to retract the slips in order to remove the tubing string from the borehole.
    Type: Grant
    Filed: September 27, 1994
    Date of Patent: July 11, 1995
    Assignee: Rotating Production Systems, Inc.
    Inventors: John L. Land, Rodger D. Lacy
  • Patent number: 4848459
    Abstract: A packer setting tool, a packer assembly and an attached liner assembly are lowered into a well bore at a desired depth to fix the liner therein. Cement is pumped down a tubing string, through the packer, the lining, check valves and forced upwardly in the annulus of the well bore. The pumped cement is followed by a non-setting liquid to clear the internal tubular structure. The packer assembly is then set in the wet cement of the annulus to provide an additional fluid seal in the well bore. The packer setting tool is released and the cement is allowed to harden and fix the linear and the packer assembly within the well bore.
    Type: Grant
    Filed: April 12, 1988
    Date of Patent: July 18, 1989
    Assignee: Dresser Industries, Inc.
    Inventors: Henry W. Blackwell, Clifford L. Talley, Rodger D. Lacy
  • Patent number: 4830103
    Abstract: A packer setting tool is disclosed for providing quick and reliable release thereof from a well casing packer. The setting tool is adapted for lowering the packer assembly within the casing. The setting tool is rotated by a drill string to release an upper set of packer assembly slips into engagement with the well casing. The packer setting tool is then lifted, thereby deploying a rubber sealing boot and setting the upper and a lower set of slips into permanent engagement with the casing. The packer setting tool is then again rotated, whereupon a shear connection is released and the setting tool can be removed from the packer and out of the well bore.
    Type: Grant
    Filed: April 12, 1988
    Date of Patent: May 16, 1989
    Assignee: Dresser Industries, Inc.
    Inventors: Henry W. Blackwell, Clifford L. Talley, Rodger D. Lacy