Patents by Inventor Gregory A. Crews

Gregory A. Crews 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).

  • Oil anchor
    Patent number: 7000694
    Abstract: This invention relates to apparatus and methods used in the production of petroleum. The apparatus and methods maintain an amount of oil on oil well casing perforations for improved petroleum production. The apparatus for the production of petroleum includes: a pump intake tube having an opening, an oil anchor generally encircling the pump intake tube, the oil anchor having an open base and vent holes in the oil anchor above the opening of the pump intake tube, a casing generally encircling the oil anchor, and perforations in the casing that are below the opening of the pump intake tube and are above the open base of the oil anchor.
    Type: Grant
    Filed: June 4, 2003
    Date of Patent: February 21, 2006
    Inventor: Gregory A. Crews
  • Oil anchor
    Publication number: 20040244987
    Abstract: This invention relates to apparatus and methods used in the production of petroleum. The apparatus and methods maintain an amount of oil on oil well casing perforations for improved petroleum production. The apparatus for the production of petroleum includes: a pump intake tube having an opening, an oil anchor generally encircling the pump intake tube, the oil anchor having an open base and vent holes in the oil anchor above the opening of the pump intake tube, a casing generally encircling the oil anchor, and perforations in the casing that are below the opening of the pump intake tube and are above the open base of the oil anchor.
    Type: Application
    Filed: June 4, 2003
    Publication date: December 9, 2004
    Inventor: Gregory A. Crews