碳酸盐岩地震弱反射区水平井分段酸压技术  

Segment Acid-fracturing Techniques for Horizontal Well in Carbonate Reservoirs in Weak Seismic Reflection Area in Tarim Basin

作　　者：李春月[1] 张烨[1] 宋志峰[1] 张泽兰[1] 胡雅洁[1] 杨方政[1] 王洋[1] 

机构地区：[1]中国石化西北油田分公司工程技术研究院,乌鲁木齐830011

出　　处：《新疆石油地质》2013年第6期716-718,618,共3页Xinjiang Petroleum Geology

基　　金：国家科技重大专项(2011ZX05014-006)

摘　　要：塔河油田碳酸盐岩地震弱反射区储集层原油储量丰度较低,只有进行水平井分段酸压改造才能有效动用该区储量,但是该区天然裂缝发育,储集层具有超深、高温、高破裂压力等特点,水平井分段酸压面临诸多技术难点。通过水平井分段改造技术现状调研,结合储集层地质特点,对水平井分段酸压管柱设计、工作液优选、分段级数、裂缝参数、施工参数等方面进行了优化,在A井现场试验取得了成功,并获得良好工业油流,这对非常规未开发储量实现有效动用,具有十分重要的意义。The weak seismic reflection area in carbonate reservoirs of Tahe oilfield in Tarim basin has low＇abundant of crude oil reserves which can be effectively produced only by horizontal drilling and segment acid-fracturing process, but using this process, many technical challenges must be faced due to its developed natural fractures, ultra-deep, high temperature and high crack pressure reservoir properties. Based on the investigation of horizontal well segment acid-fracturing techniques and reservoir geologic characteristics in this area, this pa- per presents the string design, liquid selection and acid-fracturing parameter optimization, by which the field test has been gained success- fully in A Well, with good commercial oil flow. This is of significance to the effective producing of unconventional and undeveloped reserves.

关 键 词：塔里木盆地 塔河油田 碳酸盐岩储集层 超深井 水平井 分段酸压 

分 类 号：TE357.1[石油与天然气工程—油气田开发工程]