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彭水区块常压页岩气高效排采技术研究

Reservoir Evaluation and Development(2020)

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Abstract
彭水区块属于常压页岩气藏,压裂投产后无法自喷.在正常生产中也有地层水产出,由于地层能量不足、产气量低无法携液生产,因此,排采需求贯穿整个生产阶段.由于排液量变化大,不同开采阶段缺乏对应的合理排采方式,彭水页岩气的排液效率较低.为了确定适合彭水区块的高效排采方式,针对区块的排液特点,从经济和技术角度综合评价、优选了电潜泵+气举复合排采、同心管(小直径管)排采、自产气压缩机气举排采、外输气气举排采方式,形成了一套适合彭水区块常压页岩气的排采技术,气举排液的返排率达到72%,对提高彭水页岩气的开发效益具有一定的指导意义.
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