微生物与生物表活剂复配体系在清防蜡中的应用研究  

RESEARCH AND APPLICATION OF THE COMBINATION SYSTEM OF MICROBES AND BIO-SURFACTANTS TO PARAFFIN CONTROL AND REMOVAL

作　　者：赵贲[1] 邓志英[1] 高作禧辽河油田油气集输公司 

机构地区：[1]中油辽河油田分公司钻采工艺研究院采油所

出　　处：《钻采工艺》2008年第B08期94-95,107,共3页Drilling & Production Technology

摘　　要：原油结蜡是引起油井减产的主要原因。微生物清防蜡技术是利用解烃菌降解石蜡等长链烷烃的作用,或利用生物表面活性剂清洗井筒原油,从而达到清蜡的目的。采用将解烃的红球菌Lj1-3与产脂肽类生物表面活性剂的芽孢杆菌LHX3按照7∶3的比例复配,一起注入地层,利用微生物的代谢作用,达到控制油井结蜡速度、提高油井产量、最终提高采收率的目的。这项技术作为一项新的清防蜡技术,综合经济效益好。经过现场试验,在欧31块开展的20口油井的微生物控制油井结蜡的现场应用中,成功率100%,可将原热洗周期延长至少三倍以上,并且取得了2344t的增油效果。Paraffin deposition in crude oil is the primary reason for production decline in oil wells. The technique of paraffin control and removal with microbes is to either use hydrocarbon consuming bacteria to break down the long chain paraffin hydrocarbons such as paraffin or use bio surfactants to clean the crude oil in the wellbore so as to reach the purpose of paraffin removal. In this paper, a combination system made up of degrading rhodococcus Lj1-3 and bacillus LHX3 producing lipopeptide bio surfactants in a ratio of 7:3 is injected into the formation to control the paraffin deposition speed, improve production and final recovery of oil wells. This new paraffin control and removal technique is beneficial economically. It has been proved in field application in 20 oil wells in Block Ou31 that its success ratio is 100%. It can prolong the hot washing cycle of oil wells by at least 3 times and an incremental oil production of 2344t has been achieved.

关 键 词：解烃菌 生物表面活性剂 复配 微生物清防蜡 现场试验 

分 类 号：TE358.2[石油与天然气工程—油气田开发工程]