微生物采油技术在华北油田的应用

对微生物采油机理、微生物采油区块筛选标准进行了初步的研究 .研究表明 :微生物采油是应用微生物的活动及其代谢产物进行强化采油的技术 .微生物在油藏中繁衍生长、代谢发酵及各种生物化学作用使原油裂解、体积膨胀和乳化等 ,从而降低原油粘度、改善其流度比、改变流动方向 ,达到提高原油采收率的目的 .给出了微生物采油区块筛选标准 .在华北油田现场试验情况分析表明 :微生物采油有效率达 76.7%,增产降水效果明显 ;并找出了微生物无效的原因与所选用的微生物的质量和活性等因素有关 ,所选用井的含水高等因素也有影响 .

Application of Microbial Oil Producing in North China Oil Field

Microbial oil producing was a technique of production increasing by the activity of microbe and its metabolic products. The propagation, growth, metabolism, fermentation and other biochemical actions of microbe in oil reservoirs can make crude oil cracking, expanding and emulsifying, which can improve the flowability of the crude oil, change its flow direction, thus increase the oil recovery factor. In the paper, the block screening standard of microbial oil producing was given. The result of the field test in North China Oil Field shows that the technique is of obvious effectiveness of oil production increasing and water cut decreasing, and its effective ratio reaches to 76.7%.