宝力格油田微生物驱物理模拟实验研究  

Experimental study of microbial flooding physical simulation for Baolige oilfield

作　　者：李勇斌[1] 于立新[2] 张黎黎[1] 段丽莎[1] 吴景春[3] 王启波[4] 

机构地区：[1]华北油田公司采油工程研究院,河北任丘062552 [2]华北油田公司勘探开发研究院,河北任丘062552 [3]东北石油大学提高采收率教育部重点实验室,黑龙江大庆163318 [4]华北油田公司第四采油厂,河北廊坊065000

出　　处：《石油钻采工艺》2013年第6期95-97,共3页Oil Drilling & Production Technology

基　　金：国家自然科学基金"低品位油藏残余油生物降解转化机制研究"(编号:51174092/E0403);华北油田公司重大科技项目"宝力格油田驱油微生物场建立与维护配套技术研究及应用"(编号:2011-HB-Z230)

摘　　要：针对宝力格油田微生物驱过程中存在的问题，通过室内物理模拟实验对不同驱替介质提高采收率的作用、产出细菌浓度与注入细菌浓度的关系以及营养液浓度对维持产出液细菌浓度的影响进行了深入研究。结果表明，通过注入1％的茵液及营养液进行微生物驱时可提高采收率16．77％。当产出液经补充营养液及茵液并发酵10～12h后再继续进行微生物连续驱时可进一步提高采收率5．74％，产出液细菌浓度达到10-8个／mL以上。但由于岩心对菌体的吸附作用以及岩心渗透率对微生物运移的影响，产出液细菌浓度始终要低于注入细菌浓度一个数量级以上。采用产出液回注并补充0．25％以上的营养液时，可使产出液细菌浓度维持在10-7个／mL以上。研究结果可为现场注入方案设计提供技术支持。Aiming at the issues in microbial flooding process of Baolige oilfield, the following points were deeply studied in this paper indoor physical simulation experiments, the effect of different flooding ways on enhance oil recovery, the relationship between output bacterial concentration and injected bacteria concentration and influence of nutrient solution concentration on maintaining the produced fluid concentration of bacteria. The results showed that the microbial flooding by injecting 1% bacterial fluid plus 1% nutrient solution can enhance 16.77% oil recovery. And the produced fluid can further enhance oil recovery by 5.74% when supplemented nutri- ent solution ＆ bacterial fluid and ferment about 10-12h before keep on microbial continuous flooding, and the produced fluid bacteria concentration can reach 10s cells / mL or more. However, due to the adsorption of cell core on microbial and the core permeability effect on microbial migration, the concentration of produced bacteria fluids was always one order of magnitude lower than the concentration of injected bacteria fluids. Using the produced fluids reinjection added above 0.25% nutrient solution, the concentration of produced bacteria fluids can be maintained at 107 cells/mL or more. The results can provide technical support for on-site inject program design.

关 键 词：微生物采油 物理模拟实验 低温稠油油藏 微生物场 

分 类 号：TE357.4[石油与天然气工程—油气田开发工程]