致密油藏纳米压驱复合液性能评价与应用  

Experimental Evaluation of Nano-composite Fluid Stimulation and Field Application of Tight Oil Reservoir Fracturing

作　　者：李忠宝[1] 刘俊辰[2] 张硕 谢琳 于永 刘文浩 LI Zhong-bao;LIU Jun-chen;ZHANG Shuo;XIE Lin;YU Yong;LIU Wen-hao(Anton Oilf ield Services(Group)Ltd.,Beijing 100020,China;Petro China Southwest Oil&Gas Fileld Company,Chengdu 610000,China;Preside Petroleum Technology Co.,Ltd.,Dongying 257000,China)

机构地区：[1]安东石油技术(集团)有限公司,北京100020 [2]中国石油西南油气田公司,四川成都610000 [3]普瑞思德石油技术有限公司,山东东营257000

出　　处：《化工管理》2023年第13期143-146,共4页Chemical Engineering Management

摘　　要：致密油藏储层低孔,低渗、超低渗的特点使得只有采用大规模的体积压裂改造和对应的助排措施才能达到有效生产的目的。而在压裂改造后采用常规的助排剂提高采收率仍然存在致密砂岩油藏纳米级孔喉流动困难,并且生产产量递减快的特点。针对上述问题,提出了纳米压驱复合液压裂驱采一体化的技术思路,在压裂施工过程伴随压裂液注入纳米压驱复合液,增大储层改造体积同时一并改善致密储层流体的可流动性,具有较好的推广前景。Tight oil reservoirs are characterized by low porosity,low permeability and ultra-low permeability,so that effective production can only be achieved by adopting large-scale volume fracturing stimulation and corresponding drainage measures.However,using conventional drainage aids to enhance oil recovery after fracturing still has the characteristics of diff icult nanoscale pore-throat flow and rapid production decline in tight sandstone reservoirs.In view of the above problems,the technical idea of nano-pressure flooding combined hydraulic fracturing and production integration is proposed.In the fracturing construction process,the nano-pressure flooding composite fluid is injected with the fracturing fluid to increase the volume of reservoir stimulation and improve the fluid of tight reservoirs at the same time.The nano-flooding composite fluid is suitable for fracturing construction in tight and low-permeability reservoirs,and has good promotion prospects.

关 键 词：致密油 纳米压驱复合液 提高采收率 

分 类 号：TE348[石油与天然气工程—油气田开发工程]