【摘要】 通过暂堵模拟试验装置开展了聚酯纤维、单一粒径暂堵剂、多粒径暂堵剂、纤维+多粒径暂堵剂的裂缝暂堵试验,并对比分析了其暂堵效果。试验结果表明,聚酯纤维和单一粒径暂堵剂的暂堵效果较差;满足"理想充填"理论的多粒径暂堵剂的暂堵效果优于聚酯纤维和单一粒径暂堵剂;在"理想充填"的多粒径暂堵剂基础上加入聚酯纤维,暂堵压力更高,液体漏失量更小,暂堵持续时间更长,且增大泵注排量能加速暂堵层的形成。该研究能推进压裂暂堵工艺的应用和发展,达到了非常规油气储层缝网改造以及提高油气采出程度的目的。更多还原

【Abstract】 The experiments of polyester fiber,single particle size temporary plugging agent,multi-particle temporary plugging agent and fiber-multiparticle temporary plugging agent were carried out by the temporary plugging simulation experiment device,and the results of the temporary plugging were compared and analyzed.The experimental results show that the temporary plugging effects of polyester fiber and the single particle size temporary plugging agent are poor;the temporary plugging effect of multi-particle temporary plugging agent satisfying the ideal filling theory is better than that of polyester fiber and single particle size temporary plugging agent;adding polyester fiber to the multi-particle temporary plugging agent satisfying the ideal filling theory,the temporary plugging pressure is higher,the liquid leakage is smaller,the temporary plugging duration is longer,and the formation of temporary plugging layer can be accelerated by increasing the pumping capacity.The research can promote the application and development of fracture temporary plugging technology,and achieve the purpose of reforming the fracture network of unconventional oil and gas reservoir and improving the degree of oil and gas production.更多还原