双洞型碳酸盐岩油藏试井分析研究  

Research on Well Test Analysis of the Dual Cavity/Fracture System in Carbonate Formations

作　　者：段宝江[1] 常宝华[1] 安为国[1] 熊伟[1,2] 高树生 胡志明 

机构地区：[1]中国科学院渗流流体力学研究所 [2]中国油勘探开发研究院廊坊分院,廊坊065007

出　　处：《科学技术与工程》2012年第25期6305-6309,共5页Science Technology and Engineering

基　　金：国家重点基础研究发展计划项目(2006CB202404);国家自然科学基金(51074176)联合资助

摘　　要：基于弹性理论和达西定律,针对双洞缝型碳酸盐岩油藏进行理论分析,建立了简化的试井模型。通过Laplace变换与逆变换的方法求得井底压力表达式,并对影响压力特征曲线的主要因素进行分析。结果表明:地下原油黏度主要影响压力曲线和压力导数曲线早期直线段的长短。溶洞体积相对大小主要影响压力曲线和压力导数中期下凹段的凹曲幅度。裂缝渗透率主要影响压力曲线的早期直线段斜率和压力导数曲线的截距大小。Based on the theory of elasticity and the Darcy＇s law, a simplified well testing model for the dual cav- ity/fracture system in carbonate formations was established. Through laplace transformation and inverse transforma- tion, the expression of bottom pressure was calculated. Then the main factors affecting bottom pressure is analyzed. The results show that underground oil viscosity impacts the pressure curve and the length of line segment of pressure derivative curve. Cave size impacts the pressure curve and the concave margin of concave section of pressure deriv- ative curve. Fracture permeability impacts the length of line segment of pressure curve

关 键 词：碳酸盐岩 缝洞系统 试井模型 双洞缝 

分 类 号：TE312[石油与天然气工程—油气田开发工程]