聚合物产生菌FY-7对非均质油藏的调剖潜力分析  

Profile-Control Potential of Polymer-Producing Bacteria FY-7 to Heterogeneous Reservoir

作　　者：毕永强 修建龙[2] 张康智[1] 马挺[3] Bi Yongqiang;Xiu Jianlong;Zhang Kangzhi;Ma Ting(Xi’an Aeronautical University,Xi'an,Shaanxi 710077,China;Institute of Porous Fluid Mechanics,Chinese Academy of Sciences,Langfang,Hebei 065007,China;Nankai University,Tianjin 300071,China)

机构地区：[1]西安航空学院,陕西西安710077 [2]中国科学院渗流流体力学研究所,河北廊坊065007 [3]南开大学,天津300071

出　　处：《特种油气藏》2018年第4期123-128,共6页Special Oil & Gas Reservoirs

基　　金：中国石油科学研究与技术开发项目"微生物驱油技术研究与应用"(2016B-1106)

摘　　要：为解决非均质油藏水驱采收率低的问题,探索聚合物产生菌FY-7在油田开发中的调剖应用,借助微观孔隙仿真模型从微观上研究其调剖机理,并通过物理模拟实验从宏观上评价其调剖堵水性能和提高采收率的能力。结果表明:FY-7能在24～39℃下通过生长代谢生成大量交联状的生物聚合物,且生物聚合物呈稳定胶体状态;FY-7优先在大孔道生长繁殖,并生成生物聚合物产生封堵作用,在整体上调整了吸水剖面,提高了注水波及体积,改善了水驱效果,具有选择性调剖的作用;FY-7的平均封堵率为73%,对非均质岩心可提高采收率为10.54个百分点。FY-7可有效提高原油采收率,具有很好的工业应用前景。The application of polymer-producing bacteria FY-7 in the profile-control is investigated to improve the low recovery factor of waterflooding in the heterogeneous reservoir.Microscopic pore simulation model is used to study the microscopic mechanism of profile-control.Macroscopic physical simulation is used to evaluate its performances in profile-control plugging and enhanced oil recovery.Result shows that FY-7 can produce a large number of cross-linked biopolymers with steady colloidal state through growth and metabolism at 24-39℃.FY-7 preferentially grows and proliferates in large pores and generates biopolymers to plugging.The water intake profile,water sweep volume and waterflooding performance are significantly improved,which shows a favorable effect in selective profile-control.The average plugging rate of FY-7 is 73%and the recovery factor for heterogeneous cores has been enhanced by 10.54 percentages.The FY-7 with better enhanced oil recovery performance shows a favorable industrial application prospect.

关 键 词：生物技术 代谢 生物膜 生物聚合物 微观调剖机理 性能评价 聚合物产生菌FY-7 

分 类 号：TE357.46[石油与天然气工程—油气田开发工程]