中一区Ng3区块微生物驱油物模实验研究 - 应用与环境生物学报.PDF

2013-04-25 DOI: 10.3724/SP.J.1145.2013.00335 / Chin J Appl Environ Biol 2013 19 ( 2 ) : 335-341 应用与环境生物学报 ， * 中一区Ng3区块微生物驱油物模实验研究 ** 刘涛 宋智勇 曹功泽 徐登霆 谭晓明 （中国石化胜利油田分公司采油工艺研究院 东营 2570001） 摘 要 为进一步了解微生物驱油的效果，在对中一区Ng3油藏状况、原油物性以及水质状况实验分析的基础上，确定 . 了实施微生物驱油的可行性依据 并利用岩心管模拟地层压力和温度进行微生物驱油的实验研究，同时改变不同的营 养条件和菌种组合，确定了最佳的驱油条件. 结果表明：在一次水驱的基础上，经过培养多轮次驱替后产表面活性剂 菌可以提高采收率3.7% ，产聚合物菌可以提高采收率3.9% ，而对于混合菌培养驱替后最大可以提高采收率6%以上. 综 合实验证明所用菌株可以作为现场微生物驱油的备选菌株，而且油藏的内源菌测试表明没有对实验菌株产生明显的 抑制作用. 图9 表7 参27 关键词 微生物采油；表面活性剂；聚合物；采收率 CLC TE357.9 Laboratory Study on Enhancing Recovery by Microbial Oil Displacement in ZHONGYIQU Ng3* LIU Tao**, SONG Zhiyong, CAO Gongze, XU Dengting TAN Xiaoming (Research Institute of Oil Production Technology, Shengli Oilfield Company, SINOPEC, Dongying 257000, Shandong, China) Abstract In order to study the effect of microbial enhanced oil recovery (MEOR), the feasibility of microbial oil displacement was affirmed on the basis of analyses of the conditions of reservoir, physical property of crude oil and chemical property of produced water. Meanwhile physical simulation experiment was performed under the pressure and temperature of the stratum, with the condition of nutrition and strain combination adjusted for best efficiency. The results showed that after several treatments cultured and then flooded, oil recovery was enhanced 3.7% by surfactant-producing bacteria, 3.9% by polymer- producing bacteria, and 6% by the mixed bacteria. Moreover, the bacteria were not restrained by the indigenous bacteria in oil.