石油钻采工艺Issue(4)：84-87,4.DOI:10.13639/j.odpt.2014.04.021
双分支水平井酸化技术在碳酸盐岩储层中的应用
Application of acidizing in bi-lateral horizontal well in carbonate reservoir
张合文 1丁云宏 2赫安乐 2李俊波3
作者信息
- 1. 中国科学院渗流流体力学研究所，河北廊坊 065007
- 2. 中国石油勘探开发研究院廊坊分院，河北廊坊 065007
- 3. 阿克纠宾油气股份公司，哈萨克斯坦阿克纠宾 030000
- 折叠
摘要
Abstract
In order to increase single well control area, producing degree and production of single well, a pilot test of bi-lateral horizontal well acidizing was conduced in K oilfield, Kazakhstan. First, clean self-diverting-acid system was chosen as the main acid, which has self-diverting and little formation pollution, based on the characteristics of the reservoir, lithology and physical properties of this oilfield. Besides, nitrogen and liquid nitrogen were used to temporarily block high permeability layers and make the acidizing more uniform. They can also accelerate flowing back velocity of residual acid. Treating pressure, pumping rate, and coiled tubing drawback velocity were optimized. The analysis after acidizing shows that acidizing worked in plugging removal and productivity restoration in both branches, and the production of single branch equals to its neighbour well separately. This means that bi-lateral horizontal well acidizing can get good application effect in this oilfield.关键词
碳酸盐岩/双分支/水平井/自转向酸/暂堵Key words
carbonate/bi-lateral/horizontal well/self-diverting-acid/temporary plugging分类
能源科技引用本文复制引用
张合文,丁云宏,赫安乐,李俊波..双分支水平井酸化技术在碳酸盐岩储层中的应用[J].石油钻采工艺,2014,(4):84-87,4.
