Measuring and testing – Borehole or drilling – Formation logging
Reexamination Certificate
2006-12-19
2006-12-19
Williams, Hezron (Department: 2856)
Measuring and testing
Borehole or drilling
Formation logging
C073S152170, C073S152460, C073S152510, C073S152530, C324S366000, C324S367000, C324S370000
Reexamination Certificate
active
07150188
ABSTRACT:
An apparatus for determining fluid-pressure diffusivity in a borehole (12) in a formation (10) includes an electrode (16) and a strain measuring device (18),(20) (or a particle velocity measuring device (18),(20) or a particle acceleration measuring device (18),(20)) disposed a fixed distance from the electrode (16). The electrode (16) injects an electrical current into a point on a wall of the borehole (12). The strain measuring device (18),(20) measures strain (or the particle velocity measuring device (18),(20) measuresd particle velocity or the particle acceleration measuring device (18),(20) 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 (12) includes injecting an electrical current into a point on a wall of the borehole (12), 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.
REFERENCES:
patent: 2814017 (1957-11-01), Doll
patent: 3566682 (1971-03-01), Winkler, Jr.
patent: 3599085 (1971-08-01), Semmelink
patent: 4427944 (1984-01-01), Chandler
patent: 4468623 (1984-08-01), Gianzero et al.
patent: 4904942 (1990-02-01), Thompson
patent: 5162740 (1992-11-01), Jewell
patent: 5345179 (1994-09-01), Habashy et al.
patent: 5417104 (1995-05-01), Wong
patent: 5689068 (1997-11-01), Locatelli et al.
patent: 5841280 (1998-11-01), Yu et al.
patent: 5877995 (1999-03-01), Thompson et al.
patent: 6225806 (2001-05-01), Millar et al.
patent: 6597633 (2003-07-01), Millar et al.
patent: 6653839 (2003-11-01), Yuratich et al.
patent: 6998845 (2006-02-01), Martin et al.
patent: 2002/0043977 (2002-04-01), Vail, III
patent: 2004/0196046 (2004-10-01), Aidan et al.
patent: 2005/0116709 (2005-06-01), Proett et al.
patent: 2005/0174119 (2005-08-01), Ligneul et al.
Charara Marwan
Ligneul Patrice
Pride Steven
Echols Brigitte L.
Rogers David A.
Schlumberger Technology Corporation
Segura Victor H.
Williams Hezron
LandOfFree
Non-invasive measurement of fluid-pressure diffusivity using... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Non-invasive measurement of fluid-pressure diffusivity using..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Non-invasive measurement of fluid-pressure diffusivity using... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3705541