油层法微生物采油代谢产物生成量的理论分析  

Theoretical production of metabolites for microbial enhanced oil recovery in reservoirs

作　　者：刘保磊[1] 常毓文[1] 杨玲 丁伟[1] 赵丽 

机构地区：[1]中国石油勘探开发研究院,北京100083 [2]中国石油集团测井有限公司油气评价中心,陕西西安710077 [3]胜利油田有限公司采油工艺研究院,山东东营257015

出　　处：《中国石油大学学报（自然科学版）》2014年第2期165-170,179,共7页Journal of China University of Petroleum(Edition of Natural Science)

基　　金：国家科技重大专项(2011ZX05043-002)

摘　　要：为研究油层法微生物采油代谢产物提高原油采收率的能力,根据物质守恒定律及储层孔隙结构特征,建立储层中微生物代谢产物含量与微生物可利用物质含量的数学方程,分析微生物驱油机制及微生物代谢产物的化学组成,揭示微生物在储层中生长代谢有利驱油物质的能力。结果表明:利于驱油的代谢产物成分中氧原子数量较多,而储层流体中可供微生物利用以合成驱油物质的氧原子浓度相对较低,限制了含氧原子的生物表面活性剂、生物聚合物、生物气体等的生成;以烃为唯一碳源的微生物采油难以大幅度提高原油采收率;油层中微生物可利用物质的溶解度、消耗速率、流体的注入速度等均制约微生物代谢产物的产量和生成范围。In order to study the capability of the microbial metabolites enhancing the oil recovery,the mathematical relations between the contents of the metabolites and the contents of the available substances were established under the conservation of matters and the characterization of reservoir pore structure. The ability of the microorganisms metabolizing the positive displacement materials was analyzed according to the mechanisms of the microbial enhanced oil recovery and the chemical composition of the metabolites. The analysis indicates that there are more oxygen atoms in the metabolites enhancing the oil recovery. However,the oxygen atom contents in the reservoir fluid are not enough to produce the beneficial flooding materials, which restricts the generation of some materials containing the oxygen atoms,such as the bio-surfactant,the biopolymer,the biogas. The results show that the oil recovery can not be improved considerably by the microbial enhanced oil recovery using petroleum hydrocarbon as the sole carbon source. The metabolites production and scopes are restricted by the substances solubility,the depletion rate,and the injection rate,etc.

关 键 词：油层 微生物采油 表面活性剂 聚合物 原油采收率 代谢产物 

分 类 号：TE312[石油与天然气工程—油气田开发工程] Q939.97[生物学—微生物学]