靖边气田难动用储量区水平井布井优化研究

The Horizontal Wells Deployment Optimization for the Difficult to Exploit Reserves in Jingbian Gas Field

针对目前靖边气田水平井开发效果不理想的现状,通过分析难动用储量区的物性参数特征,优选出水平井布井的试验区,并结合靖边气田水平井井位布署原则和井位优选流程,在选井参数优化研究的基础上,综合考虑古残丘分布、小幅度构造分布、沟槽分布、有效厚度分布、KfHe分布、储量丰度分布等因素,对试验区块进行水平井布井优化设计和产能预测。结果表明:预测试验区37口水平井的无阻流量为3.0～68.5×104m3/d,总和1 146×104m3/d,单井无阻流量平均31×104m3/d,效果很好。研究成果对于促进碳酸盐岩气藏难动用储量区的开发应用具有一定的参考价值。

The horizontal wells development in Jingbian gas field is not satisfied currently, by analyzing the physical parameters of the difficult to exploit reserve region, a horizontal well test area is choosed, next, combined with the horizontal wells deployment principle of the gas field and the well optimization process, on the basis of the well selection parameter optimization. Consider of the ancient mound residual distribution, the distribution of small- amplitude structural, the effective thickness distribution, KfHe distribution, reserve abundance distribution factors and so on are taken. Then the horizontal wells deployment optimization in the text region and forecast the productions are taken. The results show that ： the 37 horizontal wells＇ open flow is 3.0 - 68. 5 ×10^4 ma/d, the total sum is 1 146 ×10^4 m3/d, a single well＇ average open flow is 31 ×10^4 m3/d, the results is good. The research is of a certain refer- ence value to promote the difficult to exploit reserves＇ development and application in the carbonate gas field.