基于岩石物理相的储集层分类评价:以北部湾盆地乌石凹陷东区始新统流沙港组三段Ⅱ油组为例

发布时间：2018-06-12 19:11

本文选题：岩石物理相 + 成岩相　；参考：《古地理学报》2017年04期

【摘要】：目前储集层分类方法多数只是从储集层的物性特征角度进行分类,而没有从储集层的成因机制进行分类。通过利用分析化验资料、钻测井资料和测试资料,对北部湾盆地乌石凹陷东区始新统流沙港组三段Ⅱ油组(L_3Ⅱ油组)的沉积特征、成岩作用和构造特征进行分析,进而研究其对储集层物性的影响,并对储集层进行分类。结果表明:L_3Ⅱ油组主要发育扇三角洲内前缘水下分流河道、外前缘水下分流河道和席状砂3种沉积微相;成岩相主要识别出泥质杂基充填相、不稳定组分溶蚀相和强压实致密相3种成岩相;裂缝相则以无裂缝相为主,局部可观察到高角度和网状裂缝相。在此基础上通过三者的叠加对储集层的岩石物理相进行分类命名,划分出内前缘水下分流河道—泥质杂基充填相—高角度裂缝相等9种不同的岩石物理相。根据不同的岩石物理相特征,总结归纳出了Ⅰ类好储集层、Ⅱ类中等储集层和Ⅲ类差储集层共3类储集层,实现了从储集层成因机制的角度对储集层进行分类和评价。
[Abstract]:At present, most of the reservoir classification methods are only classified from the physical characteristics of the reservoir, but not from the formation mechanism of the reservoir. By using analysis and testing data, drilling and logging data and testing data, the sedimentary characteristics of the three section II oil group (L_3 II oil group) of the Eocene Eocene Eocene Eocene port formation in the east of Wushi Sag in the Beibuwan Basin, The characteristics of diagenesis and tectonics are analyzed, and then the influence of the reservoir on the reservoir properties is studied and the reservoir is classified. The results show that the L_3 II oil group mainly develops the subaqueous distributary channel in the fan delta front, the subaqueous distributary channel of the outer front edge and the mat like sand 3 sedimentary microfacies, and the diagenesis mainly identifies the muddy complex filling phase and the instability is unstable. 3 types of diagenesis facies are composed of component dissolution phase and strong compaction phase, and fracture phase is mainly composed of non fissure phase, and high angle and reticulate fissure phase can be observed locally. On this basis, the rock physical phase of the reservoir is classified and named by the superposition of the three, and the subaqueous distributary channel of the inner front, the muddy complex filling phase, is equal to the high angle crack. 9 different rock physical facies. According to the characteristics of different rock physical facies, a good reservoir layer I, 3 types of middle reservoir and class III differential reservoir are summed up, and the reservoir is classified and evaluated from the angle of reservoir formation mechanism.
【作者单位】：中海石油(中国)有限公司湛江分公司;
【基金】：国家科技重大专项(编号:2016ZX05024-006)资助~~
【分类号】：P618.13

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