Method for completion, maintenance and stimulation of oil...

Details Method for completion, maintenance and stimulation of oil... Method for completion, maintenance and stimulation of oil...

E - Fixed Constructions

21

B

E21B 28/00 (2006.01) E21B 33/14 (2006.01) E21B 43/04 (2006.01)

Patent

CA 2675819

A method for inducing motion in solid particulates in a solid/liquid mixture located in proximity to the periphery of a wellbore or in the formation zone adjacent to a wellbore in an oil or gas formation. The method includes introducing a gas impulse device into the wellbore. It then requires firing the gas impulse device so as to generate impulses of high pressure compressed gas, thereby to produce pressure waves within the wellbore and its surrounding formation. This causes motion of the solid particulates which permits settling and/or redistribution of the solid particulates. In some cases it even causes particulate flow, as in cold heavy oil production with sand (CHOPS). The method also frees blockages caused by the solid particulates and stimulates productivity. The method may inter alia be used in gravel pack construction and maintenance, well cementing operations and in CHOPS stimulation.

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