中国南海礁灰岩油田储层电阻率成像特征及产能主控因素分析

发布时间：2018-06-13 09:07

本文选题：测井评价 + 礁灰岩　；参考：《测井技术》2016年05期

【摘要】：礁灰岩储层由于沉积时礁体纵向和横向上的叠加,储层以非均质性强、横向厚度变化快、邻井对比差为特征。通过岩心资料对礁灰岩储层进行描述是最直接最有效的手段,但是其受控于有限的井点,无法对储层在横向上的展布特征进行连续的刻画。在前人研究成果的基础上,利用随钻电阻率成像测井结合岩心对南海珠江口盆地流花油田礁灰岩储层特征进行了详细分析和描述,并对裂缝及次生溶蚀进行了定性和定量表征。结果表明,储层裂缝发育规律性明显,礁核部位裂缝最为发育,裂缝数量最多;礁后平台裂缝发育一般,礁后斜坡裂缝发育良好。次生溶蚀分析表明,礁后平台最为发育,其次是礁核,最后为礁后斜坡。结合实际产能情况,利用灰色关联分析法对产能主控因素进行分析,研究结果表明裂缝强度和次生溶蚀是影响流花油田产能的主控因素。
[Abstract]:The reef limestone reservoir is characterized by strong heterogeneity, rapid change of lateral thickness and poor correlation between adjacent wells because of the superposition of the reef body in longitudinal and lateral direction during deposition. It is the most direct and effective method to describe the reef limestone reservoir by core data, but it is controlled by the limited well point, so it can not continuously depict the horizontal distribution characteristics of the reservoir. On the basis of previous research results, the characteristics of reef limestone reservoir in Liuhua Oilfield of Zhujiang River mouth Basin in South China Sea are analyzed and described in detail by using resistivity imaging while drilling combined with core, and the qualitative and quantitative characterization of fractures and secondary dissolution are carried out. The results show that the development regularity of reservoir fracture is obvious, the fracture in the core of reef is the most developed, the number of fracture is the most, and the fracture in the back reef platform is common, and the fracture in slope behind the reef is well developed. The secondary dissolution analysis shows that the back reef platform is the most developed, the second is the reef core, and the last is the back reef slope. According to the actual productivity situation, the main factors of productivity control are analyzed by grey correlation analysis. The results show that fracture strength and secondary dissolution are the main factors affecting productivity in Liuhua Oilfield.
【作者单位】：中海石油中国有限公司深圳分公司;斯伦贝谢中国海洋服务公司;
【分类号】：TE31;P618.13

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