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:
Mar. 27, 2012
Filed:
May. 08, 2009
William John Darnell, Houston, TX (US);
Charles David Wintill, Houston, TX (US);
Rodney Wayne Long, Cypress, TX (US);
Todd Ulrich Chretien, Lafayette, LA (US);
William John Darnell, Houston, TX (US);
Charles David Wintill, Houston, TX (US);
Rodney Wayne Long, Cypress, TX (US);
Todd Ulrich Chretien, Lafayette, LA (US);
Petroquip Energy Services, LP, Houston, TX (US);
Abstract
A multiple-positioning mechanical shifting system including for used in hydrocarbon wells. The system includes a shifting tool capable of selectively positioning a mechanical sliding sleeve valve in multiple operational positions that varying the flow rate and/or volume of tubing string fluid flowing to the well annulus. The system also includes a multiple position mechanical choke valve. A method of operating the mechanical choke valve using the shifting tool is described.