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High Energy Gas Fracturing: A New Technique for Enhanced Gas Recovery.

机译:高能气体压裂:一种提高气体回收率的新技术。

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A technology that uses propellants has been developed to control borehole pressurization so that multiple radial fractures about the wellbore are obtained. The objective is to connect nonintersecting natural fractures in a reservoir to the wellbore and thereby stimulate production. Techniques are presented for specifying the pressure pulse required to produce multiple fractures and for choosing propellants to achieve the desired pressure pulse. The multiple-fracturing technique was developed for application in naturally fractured Devonian-shale gas reservoirs; a stimulation experiment in a Devonian shale gas well successfully increased production from 6700 ft exp 3 /day to 22,000 ft exp 3 /day (190 m exp 3 /day to 623 m exp 3 /day). While the technology was developed for Devonian shale, it should be equally applicable to other oil and gas situations; an application to underground gas storage is presented. 17 references, 10 figures, 1 table. (ERA citation 09:025340)

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