页岩气藏压裂水平井产量影响因素评价  

Multi-stage Fractured Horizontal Well Productivity Evaluation in Shale Gas Reservoir

作　　者：何吉祥[1] 姜瑞忠[1] 孙洁[2] 郜益华 

机构地区：[1]中国石油大学(华东),山东青岛266580 [2]中国石化胜利油田分公司,山东东营257000

出　　处：《特种油气藏》2016年第4期96-100,155-156,共5页Special Oil & Gas Reservoirs

基　　金：国家自然科学基金项目"页岩气藏多级压裂水平井流动特征及产能评价方法研究"(51374227)

摘　　要：基于对页岩岩心的核磁共振实验、扫描电镜观察结果及进气、放气实验的调研分析,并采用源函数法、Laplace变换法建立了考虑页岩中气体溶解、吸附、含水、滑脱等因素的三重介质页岩气藏多级压裂水平井产量预测模型,以评价主要开发影响因素对页岩气藏多级压裂水平井产量的影响。通过实例验证了模型的可靠性,并评价了影响开发的关键因素对产量的敏感性。分析结果表明:页岩中含有溶解气,且溶解气对页岩气井产量的影响不容忽视;页岩含水饱和度、有机质含量、溶解参数和吸附参数均对页岩气井产量存在明显影响。该研究对于页岩气藏开发过程中提高气井产量预测的准确性具有一定指导意义。Based on the laboratory NMR and SEM analysis of shale core samples and the literature review of gas intake and release,Source-function and Laplace transformation are used to establish a productivity model of shale gas triple-porosity multi-stage fractured horizontal well to analyze the effects of main controlling-factors on the productivity of shale gas multi-stage fractured horizontal well. Field instance is used to demonstrate the reliability of the model and evaluate the effects of key factors on gas well productivity. Research shows that shale gas reservoir contains dissolved gas and which indicates a considerable contribution to gas well production and cannot be ignored. Shale gas well production is greatly dependent on shale reservoir water saturation,organic matter content,dissolution parameters and adsorption parameters. This research could provide certain guidance for improving gas well production forecast in the development of shale gas reservoir.

关 键 词：吸附气 溶解气 扩散 气井产量 压裂水平井 页岩气藏 

分 类 号：TE33[石油与天然气工程—油气田开发工程]