摘要
利用筛选出的多组菌组合,对青海、新疆的稠油进行了微生物降解实验,分析了细菌降解对原油饱和烃、芳烃以及胶质、沥青质各组分在原油中相对含量和内部组成的影响。研究结果表明,菌解作用能使原油物性发生明显改善。利用优势菌组合,对青海和新疆油田稠油井进行了微生物单井吞吐处理,处理结果表明,青海油田油井见效率达75%,日均产量增加了8.53%～35.72%,油井热洗周期延长2.3倍以上,新疆油田平均日均产油从试验前的2.39t提高到试验后的14.196t,注汽采油成本价为此次微生物采油试验成本价的3.14倍。微生物强化采油具有较好的应用前景。
The sieved multiple bacteria are used for microbial degradation experiment on heavy oil from Qinghai and Xinjiang oilfields. The effects of microbial degradation on crude compositions such as saturated hydrocarbons, aromatic hydrocarbons, gum and asphaltene and their contents are analyzed. The study shows that microbial degradation could clearly improve crude physical properties. The dominant multiple bacteria have been adopted for microbial-stimulated treatment to single well in heavy oil fields of Qinghai and Xinjiang. The results have shown a success ratio of 75% in Qinghai, with average daily incremental production (ADIP) of 8.53%～35.72%, prolonging the hot washing cycle by over 2.3 times; whereas in Xinjiang the ADIP increases from pre-test 2.39 t to post-test 14.196 t, and the test cost by microbial stimulation is lower 3.14 times than that by cyclic steam stimulation. The microbial stimulated oil recovery (MSOR) will bring bright prospect for heavy oil field application.
出处
《新疆石油地质》
CAS
CSCD
2004年第6期641-643,共3页
Xinjiang Petroleum Geology
基金
四川省科学技术带头人基金
四川省教育厅自然科学基金
省重点学科建设基金(编号押部380
2003A144
SZD0414)
