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:
Jul. 19, 2011
Filed:
Jan. 22, 2010
Paul Matthew Spiecker, Manvel, TX (US);
Pavlin B. Entchev, Houston, TX (US);
Ramesh Gupta, Berkley Heights, NJ (US);
Richard Polizzotti, Milford, NJ (US);
Barbara Carstensen, Annandale, NJ (US);
Dennis G. Peiffer, Annandale, NJ (US);
Norman Pokutylowicz, Houston, TX (US);
Paul Matthew Spiecker, Manvel, TX (US);
Pavlin B. Entchev, Houston, TX (US);
Ramesh Gupta, Berkley Heights, NJ (US);
Richard Polizzotti, Milford, NJ (US);
Barbara Carstensen, Annandale, NJ (US);
Dennis G. Peiffer, Annandale, NJ (US);
Norman Pokutylowicz, Houston, TX (US);
ExxonMobil Upstream Research Company, Houston, TX (US);
Abstract
A method and system for drilling a wellbore is described. The system includes a wellbore with a variable density drilling mud, drilling pipe, a bottom hole assembly disposed in the wellbore and a drilling mud processing unit in fluid communication with the wellbore. The variable density drilling mud has compressible particles and drilling fluid. The bottom hole assembly is coupled to the drilling pipe, while the drilling mud processing unit is configured to separate the compressible particles from the variable density drilling mud. The compressible particles in this embodiment may include compressible hollow objects filled with pressurized gas and configured to maintain the mud weight between the fracture pressure gradient and the pore pressure gradient. In addition, the system and method may also manage the use of compressible particles having different characteristics, such as size, during the drilling operations.