水平井连续油管拖动选择性酸化工艺

Selective acidizing technology by dragging coiled tubing in horizontal wells

徐克彬 马昌庆 陈迎春 陈国梁 李占省 周正奇

XU Kebin MA Changqing CHEN Yingchun CHEN Guoliang LI Zhansheng ZHOU Zhengqi

渤海钻探工程有限公司井下作业分公司，河北任丘　 062552 华北油田公司采油工程研究院，河北任丘　062552 中国石油大学机械与储运工程学院，北京　102249 华北油田公司第一采油厂，河北任丘　062552

Downhole Operation Branch Company of Bohai Drilling Engineering Co. Ltd., Renqiu 062552, China Research Institute of Petroleum Production Engineering, Huabei Oilfield Company, Renqiu 062552, China College of Mechanical and Transportation Engineering, China University of Petroleum, Changping 102249, China No. 1 Oil Production Plant of Huabei Oilfield Company, CNPC, Renqiu 062552, China

随着水平井规模化应用，水平井增产改造措施发挥着越来越重要的作用。为保证井中多段储层充分改造，发挥水平段每个油气段的产能，使改造具有针对性、选择性，进行水平井选择性酸化工艺开发尤显重要。介绍了一种在水平井用连续油管拖动选择性酸化工艺方法，对作业关键参数进行了实验分析与理论研究，确立施工参数并在DH20-4H 井成功进行了现场实施。

With large-scale application of horizontal wells, the stimulation and reform of horizontal wells has been playing a more and more important role in increasing oil/gas production. In order to ensure fully fracturing of multi-stage reservoir in well, make play the capacity of each stage in horizontal section and make the reconstruction more pertinent and more selective, the development of selective acidizing technology for horizontal wells is particularly important. This paper presents a selective acidizing process by dragging coiled tubing in horizontal wells, which conducted experimental analysis and theory study for key operation parameters, and established technical parameters and successfully implemented on DH20-4H Well.

10.13639/j.odpt.2014.06.019