基岩-孤立溶洞不稳定窜流方程  

Channeling model of non-steady flow from matrix to insular cavity

作　　者：程倩[1] 熊伟[1] 高树生[1] 刘华勋[1] 

机构地区：[1]中科院渗流流体力学研究所,河北廊坊065007

出　　处：《特种油气藏》2009年第3期53-54,81,共3页Special Oil & Gas Reservoirs

基　　金：国家973项目"碳酸盐岩缝洞型油藏开发基础研究"(2006CB202404)资金资助

摘　　要：塔河油田缝洞型碳酸盐岩储层中溶洞呈高度离散分布,是主要的储集空间。基岩是储层中广泛分布的等效连续介质,渗透率低,基岩向溶洞的窜流为非稳态窜流。提出单井钻遇孤立溶洞模型,模型外边界定压,溶洞视为扩大井筒,分析基岩与孤立溶洞间的不稳定窜流规律,初步建立基岩-孤立溶洞不稳定窜流模型。Cavities constitute the main storage space in Tahe fracture-cavity carbonate reservoir and show highly discrete distribution. Matrix is widely distributed,equivalent continuum medium in reservoir and has low permeability.The channeling from matrix to cavity belongs to non-steady seepage.A model of insular cavity encountered by single well is described with constant pressure at exterior boundary.The cavity is regarded as extended wellbore.The law of non-steady flow between matrix and insular cavity has been analyzed with the model.

关 键 词：缝洞型油藏 碳酸盐岩 不稳定流动 窜流方程 基岩 孤立溶洞 塔河油田 

分 类 号：TE33[石油与天然气工程—油气田开发工程]