荆丘油田晋45断块暂堵酸化工艺技术应用

Application of acidizing with temporaryy plugging in block Jin45 of Jingqiu oilfield.

荆丘油田晋４５断块属第三系砂岩油藏，经多年开采已进入高含水开发后期，大部分油、水井进行过多次酸化改造。随着油井含水上升，层间矛盾加剧，常规酸化工艺已不能适应生产需要。为此在该断块开展了暂堵酸化试验，以先堵后酸的方式取得了较好效果，６口油井累计增油１．６２×１０４ｔ，３口水井累计增注６．２×１０４ｍ３。

Block Jin45 of Jingqiu oilfield is a tertiary system sandstone reservoir, the field is in high water cut later stage after many years development, most of its oil wells and injection wells has been acidized many times. With the increasing of water cut in oil wells, the uneven among layers become more and more serious and the conventional acidizing technics could not meet the need of present field production. So the technic of acidizing with temporary plugging was tested in this block and good result has been obtained, 1.62104 t accumulation incremental oil and 6.2104 m3 incremental injection have been reached, and it provides useful experience to the same type reservoirs' development.