摘要
为了解决含水致密砂岩气藏开发过程中气井稳产时间短、采收率低的问题,采用数值模拟方法以鄂尔多斯盆地DS气田X井区X1井组为实例开展研究,为构造-岩性双重控制的含水致密砂岩气藏水平井制定合理采气速度提供依据,提高气藏最终开发效果。研究结果表明:通过对不同构造位置气井差异化配产,保证各部位气井生产效果,最终提高气藏整体开发效果。综合考虑稳产时间、采出程度等指标,确定构造相对低部位需控制采气速度在2%左右,构造相对高部位气井合理采气速度为2.5%~3.5%。
In order to solve the problems of short stable production time and low recovery ratio in the development of waterbearing tight sandstone gas reservoirs,numerical simulation method is using by studying the x well area of DS gas field in Ordos Basin to provide a basis for reasonable gas production rate and improve the development effect of horizontal wells in water-bearing tight sandstone gas reservoirs controlled by both structure and lithology.The results show that the production effect of gas wells in each location can be ensured and the overall development effect of gas reservoirs can be finally improved by giving differential production rate of gas wells in different structural locations.Taking the stable production time,recovery degree and other indicators into consideration,the gas production rate should be controlled at about 2%in the relatively low part of the structure,and the reasonable gas production rate is 2.5%-3.5%in the relatively high part of the structure.
作者
路建欣
Lu Jianxin(Exploration and Development Research Institute of Huabei Branch,Sinopec,Zhengzhou 450006)
出处
《石化技术》
CAS
2021年第7期166-167,153,共3页
Petrochemical Industry Technology
基金
国家科技重大专项“低丰度致密低渗油气藏开发关键技术”(2016ZX05048)。
关键词
致密气藏
含水气藏
水平井
采气速度
Tight sand reservoir
water bearing
Horizontal well
Gas production rate
