Patents by Inventor Valentin Timofeyevich Grebennikov

Valentin Timofeyevich Grebennikov 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).

  • Device for cutting of slot-like key seats in wells by a hydroabrasive method
    Patent number: 7140429
    Abstract: The invention relates to the field of mining, namely, to the oil and gas extraction, hydrogeologic, engineering and the geologic and water supply industry and provides an apparatus for the cutting of slot-like key seats in the well bore zone of productive strata by hydraulic abrasion.
    Type: Grant
    Filed: October 4, 2004
    Date of Patent: November 28, 2006
    Assignee: Nord Service Inc.
    Inventors: Valentin Timofeyevich Grebennikov, Anatoly Ivanov, Artem Ivanov
  • Method of increasing the well rate of exploitation and recharge wells
    Patent number: 7025141
    Abstract: The invention includes a method of increasing of the well rate of exploitation and recharge wells, comprising a means of decreasing the stress state in the well area by constructing of slot-like discharge key seats, wherein the slot-like key seats have a screw-like shape, wherein preliminary internal rock friction angles ? are determined for a rock composing a productive strata, and a pitch of the slot key seat screw is selected such that the tangent of the angle of deviation of the slot surface from the ? vertical will be between tg(45??/2)?tg(?)?1/?3, where 92 —is the internal rock friction angle where the key slot is being made.
    Type: Grant
    Filed: October 4, 2004
    Date of Patent: April 11, 2006
    Assignee: Nord Service Inc.
    Inventors: Valentin Timofeyevich Grebennikov, Anatoly Ivanov, Mikhail Popov