应力敏感气藏水平井试井解释方法  

Welltest Interpretation Method of Horizontal Well in Stress-sensitive Gas Reservoir

作　　者：伊向艺[1] 张志[1,2] 李成勇 李德财[1,3] 王胜波[1,3] 

机构地区：[1]成都理工大学能源学院,成都610059 [2]大庆油田有限责任公司铁人王进喜纪念馆,大庆163000 [3]大庆油田有限责任公司团委,大庆163453

出　　处：《科学技术与工程》2013年第7期1941-1945,共5页Science Technology and Engineering

基　　金：教育部博士学科点新教师类基金(20095122120012)资助

摘　　要：应力敏感效应在低渗透储层中较为普遍。水平井是快速、高效开发该类油藏的主要井型,研究其试井解释方法对准确评价储层特征、掌握开发动态具有十分重要的意义。从基础实验研究出发,采用线性化处理方法建立了应力敏感气藏水平井渗流数学模型;并采用Lord Kelvin点源解、贝塞尔函数积分和泊松叠加公式等方法求解了无限大应力敏感气藏水平井在拉氏空间中的无因次压力响应函数。通过计算得到了无因次压力和压力导数双对数理论图版,并在其基础上分析了应力敏感气藏水平井渗流特征及其影响因素。研究成果对合理高效开发低渗透应力敏感气藏具有重要意义。Stress-sensitive widely exists in fractured reservoir. A mathematical model of flow in stress-sensitive reservoir with horizontal well is established based on experimental data and with process of linearization. By using of Lord Kelvin point-source solution, Bessel function integration and Poisson superimpose formula, the dimensionless pressure response function of horizontal well in infinite stress-sensitive reservoir is obtained. And then the derivative type curve is calculated. Based on the type curve, the characteristics and influencing factors of the fluid flow through porous medium of horizontal well in stress-sensitive gas reservoir are analyzed.

关 键 词：水平井 点源函数 应力敏感气藏 渗流特征 影响因素 

分 类 号：TE348[石油与天然气工程—油气田开发工程]