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:
Sep. 10, 2019
Filed:
Oct. 07, 2016
Schlumberger Technology Corporaton, Sugar Land, TX (US);
Jacques Orban, Katy, TX (US);
SCHLUMBERGER TECHNOLOGY CORPORATON, Sugar Land, TX (US);
Abstract
A blowout preventer and a method for drilling, of which the blowout preventer includes a body defining a ram recess and an annular recess, the ram recess and the annular recess being separated apart. The blowout preventer also includes a ram positioned at least partially in the ram recess and movable with respect to the body, the ram having a distal end configured to engage a tubular and a proximal end positioned within the first recess. The blowout preventer further includes an actuation assembly including an actuation chamber, the annular recess being positioned between the actuation chamber and the ram recess. The blowout preventer also includes a buffer supply system configured to circulate a fluid through the annular recess, to prevent leakage of fluid from the ram recess into the actuation chamber.