压裂预处理技术的现场实施与评价

Execution and Evaluation for Fracturing Pre-Pad Stimulation

通常,压裂目的层的储层特征、物性及生产史差异较大,为保证压裂施工成功并取得较好的压裂效果,进行油层预处理十分必要。介绍了酸预处理、前置液氮预处理、柴油+互溶剂混合液预处理3种技术,阐述了各种预处理方法的目的及适应性,介绍了各种预处理技术在现场取得的效果,提出了各种预处理技术的适用条件及常用做法。

Fracturing pay zone differ from each other in their geologic characteristics,physical conditions and production cases To take some necessary measures such as pre pad stimulation is important for some fracturing stimulations,Which can ensure fracturing process and improve fracturing result In this paper,acid pre pad,liquid nitrogen pre pad and diesel mutual solvent pre pad were introduced,included in their executing process;application conditions and oilfield application results,conventional execution and evaluation methods for these pre pads were discussed also