塔河油田碳酸盐岩缝洞型储层的测井识别与评价方法研究  

Investigation of well logging evaluation and identification methods for carbonate reservoirs with fracture and vug in Tahe oil field

作　　者：景建恩[1] 梅忠武[1] 李舟波[1] 

机构地区：[1]吉林大学地球物理系,长春130026

出　　处：《地球物理学进展》2003年第2期336-341,共6页Progress in Geophysics

基　　金：中石化新星公司项目 (XYK 2 0 0 1- 47- 2 )资助 .

摘　　要：塔河油田奥陶系以碳酸盐岩为主 ,油气的主要储渗空间为裂缝和溶蚀孔洞 ,具有很强的非均质性 .本文利用常规及成像测井资料 ,对碳酸盐岩缝洞型储层的识别与评价方法进行研究 .为了综合各种测井方法识别裂缝 ,建立了综合裂缝概率模型 ,计算综合裂缝概率指示裂缝的发育程度 .利用地层微电阻率扫描成像测井资料进行裂缝和溶蚀孔洞的定性、定量解释 .定量计算的裂缝参数为 :裂缝密度、裂缝长度、裂缝平均宽度、平均水动力宽度、裂缝视孔隙度 ;定量计算的溶蚀孔洞参数有 :面孔率、孔洞密度 .根据缝洞型储层孔隙空间类型及其中子孔隙度、补偿密度、声波、双侧向电阻率的测井响应物性特征 ,建立缝洞型碳酸盐岩储层复杂孔隙介质解释模型 ,用于确定裂缝、溶蚀孔洞孔隙度和评价储层 .Carbonate is the main lithology of Ordovician reservoirs in Tahe oil field,, whose effective storage and pervasive space of oil and gas are fracture and solution pore, cavity with extremely serious heterogeneity characteristics. Methods of well logging evaluation and identification for carbonate reservoirs with fracture and vug are researched in this paper by using conventional logs and imaging logs. In order to identify fractures synthetically by means of several logs, comprehensive fracture probability model is built through which comprehensive fracture probability can be calculated to indicate the development level of fracture. FMI(formation microresistivity image)logs can be used to do Qualitative and quantitative interpretation of fractures and solution pore, cavities. Quantitative parameters of fracture include fracture density, length, average width, average hydrodynamic width and apparent porosity. Quantitative parameters of solution pore include vug area porosity and density. According to space type of reservoir pore and logging response of compensation density log, compensation neutron log, sonic log and dual lateral log, complicated pore medium model of carbonate reservoirs with fracture and vug is built by which porosity of fracture and solution pore, cavity can be determined to evaluate reservoir.

关 键 词：碳酸盐岩 成像测井 裂缝 孔隙度 

分 类 号：P631.4[天文地球—地质矿产勘探]