安塞西区延长组长6储层孔隙结构特征及评价  

Pore Structure Characteristics and Evaluation of the Yanchang Formation Chang 6 Reservoir in Ansai West Area

作　　者：何廷鹏[1] 侯娟[1] 李沼[1] 秦晓艳[2] 彭小平[3] 

机构地区：[1]西安石油大学,西安710065 [2]中原油田勘探开发科学研究院,濮阳457001 [3]河南油田采油二厂,南阳473415

出　　处：《重庆科技学院学报（自然科学版）》2011年第3期43-45,共3页Journal of Chongqing University of Science and Technology：Natural Sciences Edition

摘　　要：根据岩心观察、岩矿薄片、铸体薄片及扫描电镜等分析结果，认为安塞西区长6油层组储层岩石以细粒长石砂岩为主，其次为中-细粒、中粒及粉-细粒、粉粒长石砂岩，该储层主要储集空间类型有沸石溶孔、粒间孔和粒内溶孔（长石溶孔、岩屑溶孔），主要的孔隙组合类型有粒间孔-溶孔型、溶孔-粒间孔型、粒间孔型及复合型等。研究区反映孔喉特征下的各种参数变化较大，砂岩孔喉分布不均．孔喉配置关系主要为中孔-细喉型和小孔-微细喉型。Based on the analysis of the core observation, rock and mineral slices, cast slices and SEM, the results show that Chang6 reservoir is mainly of fine feldspar sandstone, following are medium-fine grained, medium grained, silt-fine grained, and silt arcose. The dominating pore space of Chang6 reservoir includes intergranular pores, the dissolved pore in the laumontite, intergranular dissolution pores （feldspar, cutting）, the main pore combination types include dissolved pore- intergranular pores, intergranular pores, microporous and compound, etc. The characteristic parameters of pore-throat of Chang6 change greatly, pore-throat distributes unevenness, and medium pore-fine throat and low pore-microthroat are main types.

关 键 词：长6储层 砂岩 孔隙结构 孔隙类型 

分 类 号：TE122[石油与天然气工程—油气勘探]