有机缓速酸在大庆外围东部油田的研究与应用  

Study and Application of Organic Retarded Acid inEastern Peripheral Oilfields in Daqing

作　　者：张洪涛[1] 陈猛 

机构地区：[1]大庆油田有限责任公司采油工程研究院,黑龙江大庆163453 [2]大庆炼化公司,黑龙江大庆163411

出　　处：《大庆石油地质与开发》2006年第2期57-58,共2页Petroleum Geology & Oilfield Development in Daqing

摘　　要：针对大庆外围东部中、低渗透油藏地层伤害问题严重,以往酸化效果不理想的问题,研究了新型有机缓速酸液及配套的施工工艺。有机缓速酸具有优良的缓速及低伤害特性,具有一定的溶蚀能力且对岩石骨架破坏小,能够用于解除地层深部伤害。应用配套的施工工艺,酸前进行井筒预处理,酸后不返排直接转注,使酸液的缓速性能充分作用于深部地层,达到了深度酸化的目的。Aiming at the problem of formation injury of medium to low permeable reservoirs in eastern peripheral area in Daqing, where previous acidizing has not good effect, this paper studies a new type of organic retarded acid and adaptable operation technique. Organic retarded acid has favorable characteristics of retarding and less injury. It has certain corrosion capability and little damage to rock matrix, and thus can be used to remove deep formation injury. By using matching operation technique with well bore pre-treatment before acidizing and directly converting to injection after acidizing without back drainage , acidizing fluid can fully affect deep formation. Field test are performed in 14 wells. Injection pressure of single well in initial period is averagely decreased by 2. 2MPa, and injection volume is decreased by 119. 4% .

关 键 词：缓速酸化 地层伤害 深度酸化 增注 

分 类 号：TE357.2[石油与天然气工程—油气田开发工程]