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:
Oct. 29, 2013
Filed:
Oct. 21, 2010
Philippe Gambier, Houston, TX (US);
Andre Salvaire, Montigny le Bretonneux, FR;
Greg Giem, Houston, TX (US);
Joel Rondeau, Antony, FR;
Philippe Gambier, Houston, TX (US);
Andre Salvaire, Montigny le Bretonneux, FR;
Greg Giem, Houston, TX (US);
Joel Rondeau, Antony, FR;
Schlumberger Technology Corporation, Sugar Land, TX (US);
Abstract
The present invention relates in general to equipment for servicing subterranean wells and in particular to a cementing head that is intended to drop a combination of darts, balls, bombs and canisters in order to activate downhole equipment, launch cementing plugs, deliver chemical products, or the like. A cementing head comprises a modular valve apparatus, comprising at least two detatchable parts. This arrangement allows the operator to remove and disassemble the valve apparatus at the wellsite. Thus, repairs and maintenance may be performed at the wellsite and the valve apparatus may be reassembled and reinstalled, obviating the need to transport the equipment to a central facility.