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机构地区:[1]中国石化石油勘探开发研究院,北京100083
出 处:《石油与天然气地质》2007年第3期315-319,328,共6页Oil & Gas Geology
基 金:中国石油化工股份公司开发项目(P03093)
摘 要:缝洞型碳酸盐岩储层非均质性严重,井间缝洞储集体的分布规模与展布方向难以获得较准确的认识,为单井动用面积的确定带来很大难度,影响了容积法计算单井动用地质储量的可信度。基于油藏物质平衡理论,以划分的缝洞单元为基础,建立了应用单井可采储量确定单井控制面积,然后再利用容积法计算单井动用地质储量的储量计算新方法。运用新的储量计算方法对塔河油田典型单元内油井动用储量的计算结果与利用动态法计算的动用储量规模有较好的一致性,表明该方法计算严重非均质的缝洞型油藏的动用储量是切实可行的。Owing to their severe heterogeneity, fractured-vuggy carbonate reservoirs distribute and extend in an unpredictable way, causing difficulties in the determination of single-well producing area and undermining the accuracy of single-well producing geological reserves calculation with the volumetric method. Based on the reser- voir material balance principles and division of fractured-vuggy reservoir units, a new reserve calculation method is developed. It first determines single-well controlled area according to the single-well recoverable reserves, and then calculates single-well producing geologic reserves with the volumetric method. The new method is applied to the calculation of the producing reserves within the typical fractured-vuggy carbonate reservoir units in Tahe oilfield. The results are consistent with that obtained by using the dynamic method, indicating that the new method is practical in calculating the producing reserves in severely inhomogeneous fractured-vuggy carbonate reservoirs.
关 键 词:缝洞型油藏 物质平衡理论 动用储量 储量计算方法
分 类 号:TE15[石油与天然气工程—油气勘探]
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