高磨地区龙王庙组滩相储层特征及主控因素

发布时间：2018-01-27 00:35

  本文关键词： 龙王庙组 滩相 储层特征 主控因素 高石梯-磨溪地区　出处：《桂林理工大学学报》2017年01期 　论文类型：期刊论文

【摘要】：通过岩心观察、薄片鉴定及物性测试等手段,认为高磨地区龙王庙组总体为低孔低渗型储层,局部为低孔高渗型储层。储集岩以砂屑云岩、鲕粒云岩、粉-细晶云岩和花斑状粉晶云岩为主。储集空间包括粒间溶孔、晶间(溶)孔、粒内溶孔及铸模孔、残余粒间孔、膏模孔、溶洞和裂缝。储层类型分为密集顺层溶洞型晶粒云岩储层(Ⅰ-1类)、溶洞型颗粒云岩储层(Ⅰ-2类)、针孔和孤立小洞型颗粒云岩储层(Ⅱ-1类)、针孔型晶粒云岩储层(Ⅱ-2类)、溶孔和零星小洞型"花斑状"晶粒云岩储层(Ⅲ类)(储层物性依次变差)。岩性、沉积微相、白云化作用和溶蚀作用是影响龙王庙组储层发育的关键因素。滩核的砂屑云岩及云坪的粉晶云岩最有利于储层发育。第一期准同生白云化作用利于孔隙的保存。准同生期溶蚀作用和表生期岩溶作用是龙王庙组产生大量溶孔溶洞的关键因素。埋藏岩溶作用进一步改善储集性能。
[Abstract]:By means of core observation, thin slice identification and physical property test, it is considered that the Longwangmiao formation in Gaomo area is a low porosity and low permeability reservoir, while the local reservoir is a low porosity and high permeability reservoir. The reservoir rock is composed of sand-chip dolomite and oolitic dolomite. The reservoir space consists of intergranular dissolved pore, intergranular (dissolved) pore, intragranular dissolved pore and mold pore, residual intergranular pore and gypsum pore. The reservoir types can be divided into two types: dense reservoir (type 鈪，

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