The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 19, 2016
Filed:
Aug. 20, 2012
Jack Gammill Clemens, Fairview, TX (US);
David Russ Larimore, Dallas, TX (US);
Jack Gammill Clemens, Fairview, TX (US);
David Russ Larimore, Dallas, TX (US);
Halliburton Energy Services, Inc., Houston, TX (US);
Abstract
Methods and apparatus are presented for a hybrid downhole force generator (DFG) using a stroke amplifier driven by hydrostatic pressure for a low-force, long-stroke portion of setting a downhole tool and a DFG powered shaft for a high-force, short-stroke portion of setting the tool. The stroke amplifier has a piston slidable in a housing, movable in response to hydrostatic pressure. The DFG powered shaft is connected to the piston via one-way slips which allow relative motion of the piston and shaft in one direction. The amplifier housing is connected to the DFG housing. In use, the DFG shaft is powered by a power supply, such as an electric motor, etc. The shaft is powered to shear a shearing mechanism, freeing the piston to move in response to the hydrostatic pressure.