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:
Dec. 19, 2006
Filed:
Dec. 16, 2004
Marwan Charara, Rueil Malmaison, FR;
Steven Pride, Moraga, CA (US);
Patrice Ligneul, Princeton, NJ (US);
Marwan Charara, Rueil Malmaison, FR;
Steven Pride, Moraga, CA (US);
Patrice Ligneul, Princeton, NJ (US);
Schlumberger Technology Corporation, Sugar Land, TX (US);
Abstract
An apparatus for determining fluid-pressure diffusivity in a borehole () in a formation () includes an electrode () and a strain measuring device (),() (or a particle velocity measuring device (),() or a particle acceleration measuring device (),()) disposed a fixed distance from the electrode (). The electrode () injects an electrical current into a point on a wall of the borehole (). The strain measuring device (),() measures strain (or the particle velocity measuring device (),() measuresd particle velocity or the particle acceleration measuring device (),() measures particle acceleration) at the fixed distance from the point of injection of the electrical current over time. The fluid-pressure diffusivity is determined based on the measured strain (or measured particle velocity or measured particle acceleration) over time. A method of determining a fluid-pressure diffusivity in a borehole () includes injecting an electrical current into a point on a wall of the borehole (), measuring at least one of strain, particle velocity, and particle acceleration at a fixed distance from the point of injection of the electrical current over time, and determining the fluid-pressure diffusivity based on the measured at least one of strain, particle velocity, and particle acceleration over time.