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姬塬地区长6段储层不同类型成岩相微观渗流特征研究
引用本文:赵煜,孙卫,桑宇,陈强.姬塬地区长6段储层不同类型成岩相微观渗流特征研究[J].石油地质与工程,2017,31(1).
作者姓名:赵煜  孙卫  桑宇  陈强
作者单位:西北大学地质学系·大陆动力学国家重点实验室,陕西西安710069
基金项目:国家科技重大专项大型油气田及煤层气开发,陕西省科技统筹创新工程基金
摘    要:鄂尔多斯盆地姬塬地区延长组长6段储层属低孔、低渗-特低渗透储层。综合利用扫描电镜、铸体薄片、X-衍射、真实砂岩微观模型驱替实验对研究区长6段储层成岩相和微观渗流特征进行研究。结果表明,成岩相不同储层的渗流特征之间存在明显的差异,主要表现在流体进入孔喉的驱替方式、波及面积、残余油类型等;利用真实砂岩微观模型驱替实验综合分析得出绿泥石膜胶结残余粒间孔相是研究区最有利的成岩相,也是油气富集的最主要地区之一,长石溶蚀相次之。

关 键 词:姬塬地区  延长组  长6段储层  成岩相  微观渗流特征

Different types of diagenetic facies and its micro seepage characteristics of Chang 6 reservoir in Jiyuan area
Abstract:Chang 6 reservoir in Jiyuan area of Ordos Basin belongs to low porosity,low and ultra-low permeability.Based on SEM,cast sheet,X-diffraction and flooding experiments of real sandstone microscopic model,the study on diagenetic facies and micro seepage characteristics of Chang 6 reservoir was carried out.The results show there were significant differences of flow characteristics between different types of diagenetic facies.By using comprehensive analysis of experimental results of real sandstone microscopic model displacement,the chlorite cementation residual intergranular pores diagenetic facies is the most favorable diagenetic facies and feldspar dissolution followed.
Keywords:Jiyuan area  Yanchang Formation  Chang 6 reservoir  diagenetic facies  micro seepage characteristics
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