盐湖沉积储层孔隙结构特征及演化模式——以马王庙油田为例  

Reservoir pore structure features and evolutionary pattern under saline sedimentary environment - taking Mawangmiao oilfield as an example

作　　者：柯小平[1,2] 龙玉梅[2] 付春华[2] 欧风平[2] 

机构地区：[1]中国科学院测量与地球物理研究所,湖北武汉430077 [2]中国石化江汉油田分公司勘探开发研究院

出　　处：《河南石油》2006年第2期13-16,共4页Henan Petroleum

摘　　要：盐湖沉积条件下的沉积环境及储集层特征等具有与淡水沉积不同的特征,通过对江汉盐湖盆地马王庙地区储层孔隙结构特征的研究,揭示了孔隙结构的宏观及微观特征。该区新沟咀组下段砂岩储层孔隙类型以粒间溶孔为主,喉道主要为片状、弯片状及点状喉道。Ⅱ、Ⅲ油组的物性比Ⅰ油组好,平面上孔隙分布具分区性。孔喉配置主要为大孔中喉,次为大孔粗喉及中孔中喉。孔隙结构受沉积环境及成岩作用的影响。以马36井Ⅱ油组砂岩为例,建立了孔隙演化定量模式。Through careful reservoirs study in Mawangmiao area, this paper reveals the microscopic feature and macro-feature of pore textures. The sedimentary environment and reservoir features under saline sedimentary conditions are different from those in fresh water sedimentary conditions. In this area, pore types of sandstone reservoir in lower member of Xingouzui formation are mainly interpar-ticle dissolved porosities; the throat shapes are mainly sheet, forniciform sheet and punctuate; the reservoir properties in Ⅱ,Ⅲ oil sets are better than Ⅰ oil sets; the pore distribution has a characteristic of zoning; the pore and throat collocations are mainly big medium throat, big pore coarse throat and medium pore medium throat are secondary. Pore textures are influenced by sedimentary environment and diagenesis. Taking Ⅱ oil sets of Ma36 well as an example, quantitative model of pore evolution has been established.

关 键 词：储集层 孔隙结构 孔隙演化 模式 江汉 盐湖盆地 

分 类 号：TE112.23[石油与天然气工程—油气勘探]