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:
Aug. 21, 2012
Filed:
Apr. 15, 2011
Cesar G. Garcia, Katy, TX (US);
Patrick J. Zimmerman, Houston, TX (US);
David Ward, Houston, TX (US);
Antonio B. Flores, Houston, TX (US);
Michael Dedman, Powell, WY (US);
Cesar G. Garcia, Katy, TX (US);
Patrick J. Zimmerman, Houston, TX (US);
David Ward, Houston, TX (US);
Antonio B. Flores, Houston, TX (US);
Michael Dedman, Powell, WY (US);
Weatherford/Lamb, Inc., Houston, TX (US);
Abstract
A downhole sleeve has an insert movable in the sleeve's bore from a closed condition to an opened condition when a ball dropped in the bore engages an indexing seat in the sliding sleeve. In the closed condition, the insert prevents communication between the bore and the sleeve's port, while the insert in the opened condition permits communication between the bore and port. Keys of a seat extend into the bore to engage the ball and to move the insert open. After opening, the keys retract so the ball can pass through the sleeve to another cluster sleeve or to an isolation sleeve of an assembly. Insets or buttons disposed in the sleeve's port temporarily maintain fluid pressure in the sleeve's bore so that a cluster of sleeves can be opened before treatment fluid dislodges the button to treat the surrounding formation through the open port.