中原油田的微生物采油试验  

TEST OF MICROBIAL ENHANCED OIL RECOVERY IN ZHONGYUAN OILFIELD

作　　者：莫冰[1] 孙薇[1] 张还恩[1] 杨瑞敏[1] 杨朝光[1] 谢立新[1] 钱思平[1] 

机构地区：[1]中原油田勘探开发科学研究院采收率研究所,河南濮阳457001

出　　处：《石油与天然气地质》2001年第4期359-361,共3页Oil & Gas Geology

摘　　要：中原油田属于典型的高温高盐油藏 (温度 :6 0～ 130℃ ,矿化度 :6× 10 4～ 32× 10 4mg/L)。采用HUNGATE厌氧技术 ,从 14 0个地层水样品中富集筛选到了 4 1组混合菌群 ,细菌形态多为杆状 ,某些有芽胞。这些培养物最适宜的生长温度为 6 0～ 80℃ ,其丰度随矿化度增高而减少。培养物的主要代谢产物———有机酸、醇等既可增大岩层渗透率 ,又可改变油水界面。因此能大幅度提高原油采收率。中原油田文 15块的原油室内试验结果表明 ,其提高原油采收率在 6 %以上。井场现场试验亦取得了良好效果 ,投入产出比达 1∶4 1。Oil pools in Zhongyuan Oilfields are typical high temperature and high salinity (temperature:60℃～130℃;brine salinity 6×10 4～32×10 4 mg/L)pools.41 bacterial populations were selected from 140 formation water samples by using HUNGATE technique.Most of the bacteria are bacilli form,some of them have gemmae.The most favourable temperature for the cultured bacteria is within 60℃～80℃,the abundance of the bacteria decreases with the increasing of salinity.The main metabolic products are organic acid and alcoho which could increase reservoir permeability,improve oil water boundary and considerably increase recovery percent.The result of laboratory test of Wen-15 block in Zhongyuan Oilfields indicates that the oil recovery factor could be increased by 6% or more.The test made in well site had also got fine result,input ouput ratio is 1∶4.1.

关 键 词：微生物 菌种 采油 中原油田 试验 

分 类 号：TE357.9[石油与天然气工程—油气田开发工程]