提高新站油田重复压裂效果技术研究

Technique for Improving Refracturing Efficiency in Xinzhan Oilfield

针对新站油田的特点,分析以往重复压裂效果差的原因,并对常规重复压裂技术采取了改进措施。该技术包括重复压裂时机选择;水力裂缝优化技术;对以往压裂液配方加以改进得到更适合重复压裂的压裂液以及堵老裂缝压新裂缝技术。最后取得了比较好的现场施工效果,提高了重复压裂工艺的整体水平。

In consideration of the characteristics of Xinzhan Oilfield,the causes of poor fracturing effects in the past were analyzed,and measures are taken for improving the techniques of conventional re-fracture,which includes selecting the time of re-fracture,optimizing the techniques for hydraulic fracture,and more suitable fluid for re-fracturing,the techniques for plugging the old fractures and opening the new fractures are achieved by improving the formula of fracture fluid.Better field application result is achieved,by which the overall re-fracturing level is improved.