摘要
微生物单井吞吐可以有效提高稠油低效井产能,为了强化微生物作用效果,对内外源微生物进行综合研究。利用激活剂体系(糖蜜3 g/L,玉米浆2 g/L,硝酸钠1.5 g/L,磷酸氢二钾1.2 g/L,磷酸二氢钾1 g/L)对地层水进行内源微生物激活,添加嗜热脂肪地芽孢杆菌SL-1进行细菌浓度和乳化能力研究,利用微生物复合吞吐技术对稠油低效井进行单井处理。结果表明,内源微生物被有效激活,细菌浓度峰值为5×108个/mL,乳化指数最高可达95%,产气量最高达260 mL;相比单纯激活内源微生物,添加外源菌后细菌浓度由2×10~8个/mL增加至9×10~8个/mL,乳化指数峰值时间由20 d缩短至15 d。GO7-53X145井和SJSH14-8井取得了显著增油降水效果,为微生物吞吐技术的应用提供了一种新思路。
Microbiological single-well huff and puff may effectively improve the productivity of heavy oil low-efficiency wells.In order to strengthen the microbial action effect,comprehensive study on the indigenous and exogenous microbes were carried out.Indigenous microbes were activated for formation water by using activating agent system(molasses 3 g/L,corn steep liquor 2 g/L,sodium nitrate 1.5 g/L,dipotassium hydrogen phosphate 1.2 g/L,potassium dihydrogen phosphate 1 g/L).Research on bacterial concentration and emulsifying capacity were carried out by adding geobacillus stearothermophilus SL-1.Microbial compound huff and puff technique was used for the single-well treatment of heavy oil low-efficiency wells.The results show that indigenous microbes are activated effectively with the bacterial concentration peak of 5×108 cfu/mL and maximum emulsion index of 95%and the gas production is up to 260mL.Compared with pure activation of indigenous microbes,the bacterial concentration is increased from 2×108 cfu/mL to 9×108 cfu/mL and emulsion index peak time is shortened from 20 d to 15 d after adding exogenous microbes.Both well GO7-53X145 and SJSH14-8 have achieved remarkable effects of increasing oil and decreasing water and provided a new idea for the application of microbial huff and puff technique.
作者
宋永亭
李彩风
曹嫣镔
孙刚正
吴晓玲
SONG Yongting;LI Caifeng;CAO Yanbin;SUN Gangzheng;WU Xiaoling(Research Institute of Petroleum Engineering,Shengli Oilfield Company,SINOPEC,Dongying 257000,Shandong,China)
出处
《石油钻采工艺》
CAS
CSCD
北大核心
2018年第3期400-404,共5页
Oil Drilling & Production Technology
基金
国家高技术研究发展计划(863计划)"中高温油藏微生物驱油技术研究"(编号:2013AA064401)
关键词
内源微生物
外源微生物
乳化活性
生物气
单井吞吐
indigenous microbes
exogenous microbes
emulsifying activity
biogas
single-well huff and puff
作者简介
第一作者:宋永亭(1976-),2012年毕业于中国海洋大学海洋化学专业,获博士学位,现从事石油微生物技术研究,高级工程师。通讯地址:(257000)胜利油田石油工程技术研究院。E-mail:songyongting.slyt@sinopec.com。;通讯作者:李彩风(1981-),2017年毕业于中国海洋大学海洋化学工程与技术专业,获博士学位,现从事石油微生物技术研究,副研究员。通讯地址:(257000)胜利油田石油工程技术研究院。E-mail:fengr66@163.com。
