Continental facies shale oil reservoir fracturing sand adding method

The invention relates to a continental facies shale oil reservoir fracturing sand adding method, and relates to the technical field of petroleum exploration and development fracturing engineering. The method comprises the following steps: pumping prepad fluid; pumping in a first step type slug conti...

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Hauptverfasser: JIA YUNPENG, SHAO LIFEI, GOU XIAOTING, YAN YANG, SUI XIANGYUN, ZHAO YUDONG, TIAN FUCHUN, SHI JIN, CHEN ZIWEI, LIU XUEWEI, ZHAO TAO, YIN SHUNLI, ZHANG SHENGCHUAN, ZHANG RUNZE
Format: Patent
Sprache:chi ; eng
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Zusammenfassung:The invention relates to a continental facies shale oil reservoir fracturing sand adding method, and relates to the technical field of petroleum exploration and development fracturing engineering. The method comprises the following steps: pumping prepad fluid; pumping in a first step type slug continuous sand adding period; the first stepped slug continuous sand adding period comprises one of a three-stepped slug continuous sand adding period and a four-stepped slug continuous sand adding period; the three-step slug continuous sand adding period comprises three sand adding stages, and the four-step slug continuous sand adding period comprises four sand adding stages. The method can improve the sand carrying rate of liquid, reduce the construction cost and relieve the water pressure for large-scale fracturing. 本公开是关于一种陆相页岩油藏压裂加砂方法,涉及石油勘探开发压裂工程技术领域。所述方法包括:泵入前置液;泵入第一个阶梯式段塞连续加砂周期;第一个阶梯式段塞连续加砂周期包括:三阶梯式段塞连续加砂周期,或,四阶梯式段塞连续加砂周期中的一种;三阶梯式段塞连续加砂周期包括三个加砂阶段,四阶梯式段塞连续加砂周期包括四个加砂阶段。该方法可以提高液体携砂率,降低施工成本,缓解大规模压裂用水压力。