潘庄区块煤层气开发井网优化数值模拟研究

Research on Numerical Simulation of Well Pattern Optimization for Coalbed Methane Development in Panzhuang Block

位于沁水盆地的潘庄区块煤层气储层参数良好,是国内开发效果最好的区块。目前采用多分支水平井、单分支水平井及丛式井开发模式,随着勘探开发的逐步深入,为形成与主力煤层更加相适应的配套开发技术,需要对部署区域进行井网优化调整,以达到最优开发效益。本文通过数值模拟的方式,结合以往实际生产经验,针对潘庄区块进行井网优化数值模拟研究,提出开发中后期潘庄区块最优井距、最优开发模式。根据预测,潘庄区块进行优化后20年效益可提高一倍,为潘庄区块勘探开发部署提供了技术支撑。

The parameters of CBM reservoir in Panzhuang Block located in Qinshui Basin are favorable,which makes it the block with the best development effect in China.At present,the development mode with multi-lateral horizontal well,single branch horizontal well and cluster well are adopted.With further exploration and development,in order to form a supporting development technology that is more suitable for the main coal seam,it is necessary to optimize and adjust the well pattern in the deployment area to achieve the optimal development benefit.In this paper,combined with previous practical production experience,the reservoir numerical simulation research on well pattern optimization for Panzhuang Block is carried out,and the optimal well spacing and optimal development mode of Panzhuang Block in the middle and later development period is proposed.According to the prediction,the efficiency of Panzhuang Block can be doubled in 20 years after optimization,which provides technical support for the exploration and development deployment for Panzhuang Block.