轮古油田缝洞型碳酸盐岩油藏试井分析  

Well Test Analysis of Cavity-fractured Carbonate Reservoirs

作　　者：杜箫笙[1] 杨正明[2] 程倩[1] 李树铁[2] 

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

出　　处：《石油天然气学报》2009年第3期134-136,140,共4页Journal of Oil and Gas Technology

基　　金：国家"973"规划项目(2006CB202404)

摘　　要：轮古油田缝洞型碳酸盐岩油藏微裂缝发育的基岩可以视为等效连续介质,可与裂缝系统、溶洞系统一起构成等效三重连续介质。针对等效三重连续介质油藏提出裂缝与井筒连通的试井解释模型,采用Laplace变换求出解析解,该解析解考虑了井筒储集效应和表皮效应的影响。所绘制的双对数导数曲线表现为2个下凹部分,分别表征溶洞系统向裂缝系统的窜流,等效连续介质向裂缝系统、溶洞系统的窜流。实例分析验证了模型的有效性和合理性。The micro-fracture-developed base rock in Lungu Oilfield could be taken as an equivalent continuous medium, an equivalent triple continuous medium was composed with the fracture system and cave system. In allusion to the equivalent triple continuous oilfield, a well test interpretation model connected between fracture and borehole was put forward. Laplace transform was adopted to get analytical solution, and this analytical solution considered the bore hole storage effect and the skin effect. The double logarithm curves represents two down concaves, the cross flow comes from cave system to fracture system and the equivalent triple continuous medium channels to the fracture system and cave system. The validity and rationality are demonstrated by the analysis of the instance.

关 键 词：缝洞型油藏 试井分析 碳酸盐岩 等效三重介质 概念模型 轮古油田 

分 类 号：TE353[石油与天然气工程—油气田开发工程]