二连盆地赛51井石灰岩储层深度酸压技术研究  

Study on Deep Acid Fracturing Tech for Limestone Reservoir of Sai51 Well in Erlian Basin

作　　者：赵安军[1] 才博[2] 路占军[1] 赵政嘉 

机构地区：[1]华北油田公司,河北任丘062552 [2]中石油勘探开发研究院廊坊分院,河北廊坊065007

出　　处：《油气井测试》2011年第3期55-59,77-78,共5页Well Testing

摘　　要：赛51井储层改造存在如下问题:①物性差基质基本不含油;②杨氏模量高,应力遮挡差;③储层温度低,破胶困难;④原油凝固点高,胶质和沥青质含量高,易结蜡;⑤酸液浓度高,对缓蚀要求高,需要采用深度酸压技术形成长缝等。在储层评价研究基础上,针对以上问题研究制定技术对策,应用地面交联酸体系施工获得成功。该井的施工成功开辟了二连盆地古生界灰岩潜山找油新领域,实现了我国东部地区石炭系灰岩潜山勘探的首次重要突破。On the basis of reservoir evaluation,problems appeared in reservoir treatment for Sai 51 is follows:1,poor physical property and almost no oil in matrix;2,the high Young's modulus,poor stress shielding;3,low reservoir temperature and difficulty of broken plastic;4,the high freezing point of crude oil,high content of resin and asphalt,easy to wax;5,high acid concentration,high requirement for corrosion and need to use the depth fracturing tech to built long slit,and so on.Countermeasures are studied and made.Application of surface linked acid system is successful.The successful operation of this well opens a new area in Erlian Paleozoic limestone hill to find oil fields,which achieves the first major breakthrough in the exploration of the Carboniferous limestone hill in eastern China.

关 键 词：裂缝性灰岩 深度酸压 技术难点 地面交联酸 

分 类 号：TE155[石油与天然气工程—油气勘探]