井-缝-单洞试井解释模型在缝洞型碳酸盐岩油藏动态储量计算中的应用  

Application of well fracture single hole well test interpretation model in dynamic reserves calculation of fractured vuggy carbonate reservoir

作　　者：吕晶[1] Lu Jing(Sinopec Northwest Oilfield Company,Xinjiang Urumqi831011)

机构地区：[1]中国石化西北油田分公司,新疆乌鲁木齐831011

出　　处：《石化技术》2021年第4期91-92,90,共3页Petrochemical Industry Technology

摘　　要：本文针对缝洞型碳酸盐岩油藏提出井-缝-单洞试井解释模型,建立相应的数学模型;分析了溶洞容积等参数对模型双对数典型曲线图版曲线形态的影响,得出模型的储量计算公式。研究表明井-缝-单洞模型中溶洞容积的研究对于油藏储量计算异常重要。不管是无限大外边界条件还是封闭边界条件下,随着溶洞容积增大,出现的下凹段深度越大,开度越宽,同时下凹段出现的时间越早,反映出溶洞越大,供液能力越强,溶洞向裂缝响应时间相对变快,单位时间内压降也变小,压力保持程度好。This paper presents a well fracture single hole well test interpretation model for fractured vuggy carbonate reservoirs,establishes the corresponding mathematical model,analyzes the influence of parameters such as cave volume on the curve shape of the model’s double logarithm typical curve plate,and obtains the reserve calculation formula of the model.The research shows that the study of cave volume in well fracture single hole model is very important for reservoir reserves calculation.No matter under infinite external boundary conditions or closed boundary conditions,with the increase of cave volume,the deeper the concave section is,the wider the opening is.At the same time,the earlier the concave section appears,which reflects that the larger the cave is,the stronger the liquid supply capacity is,the faster the response time of cave to fracture is,the smaller the pressure drop per unit time is,and the better the pressure maintenance degree is.

关 键 词：缝洞型碳酸盐岩 试井解释 井-缝-单洞 数值反演 

分 类 号：TE353[石油与天然气工程—油气田开发工程]