致密砂岩气藏水平井整体开发实践与认识——以苏里格气田苏53区块为例

Practice and Recognition of Horizontal Well Development in Tight Sandstone Gas Reservoirs——A Case Study from Block Su53

以苏里格气田苏53区块为例,首先,必须针对苏里格气田大面积含气背景下存在含气富集区的典型地质特征,开展气藏精细地质研究,结合地震检测成果,预测含气富集区。在此基础上,针对水平井整体开发选区条件,选择地质条件适宜的含气区域,开展有效储层分布规律研究,选用科学合理的水平井开发井网,做好井位优选与井位设计,通过压裂改造技术,整体开发动用致密砂岩气藏。形成致密砂岩气藏水平井整体开发技术路线与开发思路,不断继续升级并延伸应用到其他非常规油气藏的开发。

Block Su 53 of Sulige Gas-field was used as an example.Firstly,based on the typical geological features in gas enrichment zones of Sulige Gas-field,a fine geologic study was carried out in the gas reservoir,and in combination with the result of seismic detection,gas enriched region was predicted.On the basis stated above and in combination with the conditions for selecting the areas of overall horizontal well development,suitable gas-bearing areas are chosen and the rules of effective reservoir distribution are studied,and rational development well patterns are established for optimal design of well locations.Through fracturing reconstruction,integrated sandstone reservoir development is carried out and the technical road and idea for the reservoir development are established.It provides guidance for promoting and expanding the application in the oilfield and the similar oilfields.