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:
Jun. 29, 2004
Filed:
Mar. 07, 2002
William L. Koederitz, Cedar Park, TX (US);
VARCO I/P, Inc., Houston, TX (US);
Abstract
Methods and systems are provided for varying fluid pressure in a circulation system while circulating a kick out of a well bore drilled through a subterranean formation using a drilling rig and a drill string . The kick may be automatically circulated out of the well bore and/or a kill fluid may be circulated into the well bore. A controller reduces the circulation rate by automatically controlling the rate of the pump and the position of well bore choke . Various sensors interconnected with the controller may be used to maintain circulation system operation. The controller may control various components utilized in the circulation procedure to maintain a substantially constant bottom hole pressure on the formation while circulating the kick out of the well.