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:
Nov. 17, 2009
Filed:
Apr. 20, 2007
William J. Darnell, Houston, TX (US);
Bryan Lane, Houston, TX (US);
William Tyler Livingston, New Iberia, LA (US);
Andrew Wee-mien Wong, Lafayette, LA (US);
William J. Darnell, Houston, TX (US);
Bryan Lane, Houston, TX (US);
William Tyler Livingston, New Iberia, LA (US);
Andrew Wee-Mien Wong, Lafayette, LA (US);
PetroQuip Energy Services, LLP, Houston, TX (US);
Abstract
A device for shifting a sliding sleeve. The sliding sleeve is concentrically positioned within a well, and wherein the well is in communication with a hydrocarbon reservoir. In the most preferred embodiment, the device comprises an outer housing forming an annulus with the well and a power piston slidably disposed within the outer housing. The power piston includes an upper shoulder configured to form an annular chamber and a tubular chamber relative to the outer housing, a lower shoulder configured to form an atmospheric chamber relative to the outer housing. The device further comprises a first latch for preventing upward movement of the power piston, a second latch for preventing downward movement of the power piston, and wherein movement of the power piston shifts the sliding sleeve.