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. 03, 2015
Filed:
Dec. 28, 2012
Schlumberger Technology Corporation, Sugar Land, TX (US);
Kevin J. Nikiforuk, Houston, TX (US);
Daniel Howard Milmine, Sherwood Park, CA;
Schlumberger Technology Corporation, Sugar Land, TX (US);
Abstract
A downhole tool hydraulic retriever is provided that includes a stroking unit comprising a hydraulic cylinder, a piston body at least partially disposed within the hydraulic cylinder, and a piston rod extending from the piston body. The downhole tool hydraulic retriever also includes first and second packer cup assemblies configured to translate axially with respect to each other. In addition, the downhole tool hydraulic retriever includes a pressure intensification module comprising sequencing valves and hydraulic distribution lines configured to divert pressure to the first packer cup assembly when the piston body is at a beginning of a stroke within the hydraulic cylinder, and to divert pressure to the second packer cup assembly when the piston body is at an end of the stroke within the hydraulic cylinder.