Borehole seismic pulse generation using rapid-opening valve

Details Borehole seismic pulse generation using rapid-opening valve Borehole seismic pulse generation using rapid-opening valve

2006-09-18

2011-11-22

Bagnell, David (Department: 3672)

Wells

Hydraulic fracturing device

Reexamination Certificate

active

08061421

ABSTRACT:
During a surge-pulsing operation in a borehole (e.g an oil-well undergoing remediation) liquid is stored under pressure upstream of a valve, and then released through the valve suddenly enough to create a seismic wave, which propagates into the formation around the borehole, and assists the surge-pulsing to improve the conductivity and liquid-injectability of the formation. The downhole valve achieves the rapid-opening requirement by virtue of its geometrical layout, as dictated by the strictures of the downhole environment.

REFERENCES:
patent: 5297631 (1994-03-01), Gipson
patent: 5836393 (1998-11-01), Johnson

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