Optimization of high-energy gas fracturing technology for deep tight gas reservoirs in East China Sea
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TE357.1+4

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    Abstract:

    An optimized high-energy gas fracturing technology was proposed to solve the difficulty on the stimulation of the deep tight gas reservoirs in the East China Sea. Temperature-resistant potassium perchlorate was preferred as the solid oxidant and temperature-resistant epoxy resin was used as the polymer binder. Addition with the use of high temperature-resistant rubber,sensitive agent,curing agent and other materials,the high temperature-resistant propellant was made by using a slurry casting process. The propellant could withstand a high temperature about 200 ℃ for 48 hours. According to the non-Darcy gas flow productivity formula and the multi-crack model after high-energy gas fracturing,the gas well productivity and production-increasing ratio model after the fracturing were derived. The correlation between the gas well productivity and fracturing parameters was analyzed. Fracturing mode with both built-in and sleeve-type propellant were optimized for different propellant parameters. The“TCP-HEGF-APR test”integration process technology has been formed innovatively. It greatly saves 50% working time,reduces reservoir damage and improves the safety of the downhole work with string tools.

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SUN Lin, GUO Shisheng, XIONG Peiqi, LI Xuguang. Optimization of high-energy gas fracturing technology for deep tight gas reservoirs in East China Sea[J]. Petroleum Geology and Recovery Efficiency,2019,26(4):119~124

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  • Received:
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  • Online: September 24,2019
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