Wells – Processes – Cyclic injection then production of a single well
Reexamination Certificate
2005-02-08
2005-02-08
Walker, Zakiya (Department: 3672)
Wells
Processes
Cyclic injection then production of a single well
C166S169000, C166S249000, C166S279000, C166S305100
Reexamination Certificate
active
06851473
ABSTRACT:
For extracting a liquid (such as oil) from a porous medium, the liquid is subjected to pulses that propagate through the liquid flowing through the pores of the medium. The pulses cause momentary surges in the velocity of the liquid, which keeps the pores open. The pulses can be generated in the production well, or in a separate excitation well. If the pulses travel with the liquid, the velocity of travel of the liquid through the pores can be increased. The solid matrix is kept stationary, and the pulses move through the liquid. The pulses in the liquid can be generated directly in the liquid, or indirectly in the liquid via a localized area of the solid matrix.
REFERENCES:
patent: 5297631 (1994-03-01), Gipson
patent: 5533570 (1996-07-01), Streich et al.
Developing and Completing Water WellsChapter 14, p. 1 1966.
Anthony Asquith & Co.
Pe-Tech Inc.
Walker Zakiya
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