缝洞型油藏洞穴内流体流动特征  

FLOW CHARACTERISTICS OF THE CAVE FLUIDS IN FRACTURED-VUGGY OIL RESERVOIRS

作　　者：康志江[1] 邸元[2] 赵艳艳[1] 黄林[2] 

机构地区：[1]中国石油化工股份有限公司石油勘探开发研究院,北京100083 [2]北京大学工学院能源与资源工程系,北京100871

出　　处：《大庆石油地质与开发》2014年第3期82-85,共4页Petroleum Geology & Oilfield Development in Daqing

基　　金：国家973项目“碳酸盐岩缝洞型油藏开采机理及提高采收率基础研究”(2011CB201004)

摘　　要：塔里木盆地塔河油田奥陶系碳酸盐岩油藏的主要储集体类型为大型溶洞与裂缝.在提出多个溶洞储集体的流体流动数学模型的基础上,采用溶洞间无因次传导率和无因次溶洞存储系数对其进行无因次化,并采用数值方法对其控制方程进行求解,研究洞穴内流动变化规律和特征.通过改变溶洞大小和溶洞间裂缝连通性等参数,计算了不同缝洞参数对无因次压力导数曲线的影响,研究成果对于油田生产动态特征分析具有重要的意义.The main types of the accumulating bodies in Ordovician carbonate oil reservoirs of Tahe Oilfield in Tar- im Basin are large-size caves and fractures. On the bases of many presented mathematical models for the fluid flow in the fractured-cave reservoirs, the dimensionalization is conducted for the reservoir bodies by means of dimension- less conductivity and storage coefficient among the caves, and moreover the solutions are seeked for the controlling equation with the help of the numerical method, thus the laws and the characteristics of the flow changes in the ca- ves are researched. Through changing the parameters such as the cave sizes, fracture connectivity among the vugs and so forth, the effects of the parameters of different fractures and caves on the pressure derivative curves are cal- culated. These achievements possess important significance for the characteristic analyses of the oilfield production performances.

关 键 词：洞穴流模型 压力导数曲线 缝洞型油藏 塔河油田 

分 类 号：TE344[石油与天然气工程—油气田开发工程]