Data processing: measuring – calibrating – or testing – Measurement system in a specific environment – Earth science
Reexamination Certificate
2007-05-22
2007-05-22
Bui, Bryan (Department: 2863)
Data processing: measuring, calibrating, or testing
Measurement system in a specific environment
Earth science
C703S005000
Reexamination Certificate
active
10333283
ABSTRACT:
There is a method of determining properties relating to an underbalanced well, comprising inducing pressure variations in a fluid within a well, measuring the pressure variations, and calculating pore pressure of at least one fluid-producing formation. The pressure variations cause a change in flow rate from formations along a length of borehole, and as such a change in the production flow rate of the well. The variations in pressure are used to calculate the pore pressure. Variations in annular bottomhole pressure are induced by altering the flow rate of drilling fluid, or the density of drilling fluid or by acoustic pulsing downhole. The pore pressure, permeability and porosity of the formations is derived as a real time profile along the length of the borehole.
REFERENCES:
patent: 2293904 (1942-08-01), Kail
patent: 3517553 (1970-06-01), Crownover, Jr. et al.
patent: 3552502 (1971-01-01), Wilson, Sr.
patent: 3827511 (1974-08-01), Jones
patent: 3871218 (1975-03-01), Louis
patent: 5214251 (1993-05-01), Orban et al.
patent: 5220504 (1993-06-01), Holzhausen et al.
patent: 5337821 (1994-08-01), Peterson
patent: 5354956 (1994-10-01), Orban et al.
patent: 6484816 (2002-11-01), Koederitz
patent: 6659197 (2003-12-01), Cooper
patent: 6941804 (2005-09-01), Hasem et al.
patent: 0 171 933 (1985-07-01), None
patent: 0 339 752 (1989-04-01), None
patent: 0 386 810 (1990-02-01), None
patent: 1 579 785 (1977-09-01), None
patent: 2 161 943 (1985-07-01), None
patent: 99/00575 (1998-06-01), None
Kardolus et al Formation testing while underbalanced drilling SPE 38754, 1997, pp. 521-528.
De Chizelle Yan Kuhn
Kneissl Wendy
Bui Bryan
Bushard Edward M.
DeStefanis Jody Lynn
Gahlings Steven
Schlumberger Technology Corporation
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