大牛地气田致密砂岩储层测井相类型研究  

Log facies types of tight sandstone reservoir in the Daniudi gas field

作　　者：高青松[1] 曹桐生[1] 张占杨 

机构地区：[1]中国石化华北油气分公司勘探开发研究院,河南郑州450006

出　　处：《石油地质与工程》2017年第6期36-40,共5页Petroleum Geology and Engineering

基　　金：国家科技重大专项"鄂尔多斯盆地北缘低丰度致密低渗气藏开发关键技术"(2016ZX05048–002)

摘　　要：大牛地气田位于鄂尔多斯盆地伊陕斜坡北部,主要含气层位为上古生界石炭系太原组、二叠系山西组和下石盒子组,为致密砂岩储层。该区主要经历了晚石炭世海侵、早二叠世山西期海退形成的三角洲、下石盒子期河流发育的海–陆过渡沉积,形成的测井相类型多样,利用自然伽马曲线将该区储层划分为8种岩石相类型,明确了不同沉积体系储层及有利沉积相带;其中下石盒子组盒3、盒2、盒1段主要为辫状河流相沉积,有利相带为辫状河主河道,山西组山2、山1段为三角洲平原沉积,有利相带为分流河道,太原组太2段主要为障壁岛–泻湖沉积,有利微相为障壁砂坝。Daniudi gas field is located in the north of Ordos Yishan slope of the basin,the main gas bearing strata are the upper Paleozoic Carboniferous Taiyuan formation,Permian Shanxi formation and Shihezi formation,which belongs to tight sandstone reservoir.Daniudi gas field mainly experienced the transgression in late Carboniferous,regression in early Permian transgressive delta in Shanxi period,sea-land transitional fluvial deposits in lower Shihezi formation and there formed various log facies types.By using natural gamma curve,the reservoir can be divided into eight rock types,the reservoir and favorable sedimentary facies under different sedimentary systems were made clear.He_3,He_2 and He_1 of Shihezi formation are mainly of braided fluvial facies deposit and the favorable facies belt is braided river main channel.Shan_2 and Shan_1 of Shanxi formation are mainly of delta plain sedimentary and the favorable facies belt is distributary channel.Tai_2 of Taiyuan formation is mainly of barrier island-lagoon deposits and the favorable microfacies is barrier bar.

关 键 词：大地气田 致密砂岩 储层测井相 

分 类 号：TE112.221[石油与天然气工程—油气勘探]