白音查干凹陷达尔其地区腾格尔组储层特征研究

发布时间：2018-04-12 17:09

  本文选题：白音查干凹陷 + 腾格尔组　； 参考：《中国石油大学(华东)》2015年硕士论文

【摘要】：本论文以白音查干凹陷达尔其地区腾格尔组为研究对象,综合运用测井、录井、岩心、薄片、分析化验等资料,系统的开展了储层特征方面的研究,主要取得以下几点认识:腾格尔组岩石类型以岩屑石英砂岩与岩屑砂岩为主。西南部D34井区与东南部D14井区具有明显的相似性,都是以高石英、高岩屑含量为特征;而北部D1井区总体上以高石英含量为特征。腾格尔组储层砂岩岩屑类型按含量依次为变质岩岩屑、沉积岩岩屑、岩浆岩岩屑;西南部D34井区岩屑类型为沉积岩岩屑;东南部D14井区岩屑类型为变质岩岩屑;北部D1井区岩屑类型为变质岩与沉积岩岩屑。腾格尔组储层成岩作用阶段为中成岩A期。成岩作用类型多样,发育压实、胶结、交代和溶解作用。整体压实强度为中-较强压实;压实强度与深度、岩石粒度有关,深度越大,粒度越细,压实程度越强;胶结程度为弱胶结。研究区储层孔隙类型主要原生粒间孔隙、粒间溶蚀孔隙以及裂缝三种类型。毛管压力曲线分为三种类型,整体以Ⅱ类居多。反映整个凹陷储层以中孔喉类型为主,储集性能中等。依据岩性、成岩特征、孔隙类型、物性、孔喉结构参数以及孔喉分布特征等建立储层分类评价标准,将研究区储层划分为3种类型。对重点井与重点区域展开了储层评价,得出腾上段主要为Ⅱ类储层;腾下段以Ⅲ类储层为主。
[Abstract]:In this paper, the Tengger formation in Darqi area of Baiyinchagan depression is taken as the research object, and the reservoir characteristics are systematically studied by using logging, logging, core, thin slice, analysis and laboratory data, etc.The main rock types of Tengger formation are lithic quartz sandstone and lithic sandstone.The southwest D34 well area is similar to the southeast D14 well area, which is characterized by high quartz and high cuttings content, while the north D1 well area is characterized by high quartz content.The types of sandstone lithology in Tengger formation are metamorphic, sedimentary and magmatic according to their content, depositional lithology in D34 well in southwest, metamorphic lithology in southeastern D14 well, metamorphic lithology and metamorphic lithology in southeastern D14 well area.The diagenesis stage of Tengger formation is middle diagenesis A.Various diagenesis types, development compaction, cementation, metasomatism and dissolution.The overall compaction strength is medium-strong compaction; the compaction strength is related to depth and rock granularity. The greater the depth, the finer the granularity, the stronger the compaction degree, and the stronger the cementation degree is.The reservoir pore types in the study area are mainly primary intergranular pore, intergranular dissolution pore and fracture.Capillary pressure curve can be divided into three types.It reflects that the reservoir in the whole sag is dominated by the type of mesoporous throat, and the reservoir performance is medium.According to lithology, diagenetic characteristics, pore types, physical properties, pore throat structure parameters and pore throat distribution characteristics, the reservoir classification and evaluation criteria are established, and the reservoirs in the study area are divided into three types.The reservoir evaluation of key wells and regions shows that the Teng upper member is mainly of class 鈪，

本文编号：1740656