Method for impulse stimulation of oil and gas well production

Details Method for impulse stimulation of oil and gas well production Method for impulse stimulation of oil and gas well production

2010-12-23

2011-12-27

Bates, Zakiya W (Department: 3676)

Wells

Processes

Vibrating the earth or material in or being placed in the...

C166S252100, C166S263000, C166S308100, C166S370000, C166S372000

Reexamination Certificate

active

08082989

ABSTRACT:
A method for improving liquid injection into a rock formation. The method includes the steps of introducing a gas impulse device into a wellbore in the formation and pumping a pressurized liquid into the wellbore. The method also includes firing the gas impulse device periodically so that the device generates impulses of high pressure compressed gas. The gas expands through the pumped pressurized liquid substantially instantaneously increasing the liquid flow rate into the rock formation, and creates rapid cyclical injected liquid surges into the rock formation with liquid oscillation occurring inside the fractures and/or pores of the formation. The method may be used in regular oil production applications, waterflooding of wells that have ceased to be productive, in preventing lost circulation in oil wells, and in injecting hazardous wastes into rock formations.

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