姚泾利, 李咪, 王怀厂,等.鄂尔多斯盆地东部绥德-吴堡地区山2₃气层砂岩成岩相类型与控因[J].河南理工大学学报（自然科学版）,2020,39(3):45-55.

YAO J L, LI M, WANG H C, et al.Diagenetic facies and controlling factors of the sandstones from Shan 2₃ gas layers in the Suide-Wubu area， eastern Ordos basin[J].Journal of Henan Polytechnic University(Natural Science) ,2020,39(3):45-55.

鄂尔多斯盆地东部绥德-吴堡地区山2₃气层砂岩成岩相类型与控因

姚泾利1, 李咪2,3, 王怀厂1, 郭英海2,3, 侯云东1, 白万备2

1.中国石油长庆油田分公司勘探开发研究院，陕西西安 710021;2.煤层气资源与成藏过程教育部重点实验室，江苏徐州 221008;3.中国矿业大学资源与地球科学学院，江苏徐州221116 ;4河南理工大学 资源环境学院，河南焦作 454000                                           

摘要:成岩相的研究结果可以有效指导储集层的寻找。本文基于对鄂尔多斯盆地东部绥德-吴堡地区山西组山2₃气层493个砂岩样品铸体薄片的系统观察与鉴定，研究该砂岩储层的主要成岩作用类型及特征。根据主要成岩作用的微观发育特征，结合储层物性，建立成岩相划分方案，分析各类成岩相的特征、分布规律及控制因素。结果表明，研究区山2₃气层砂岩储层处于中成岩B期，主要经历了压实、胶结、溶蚀作用的改造，成岩相可精细划分为三大类、七个亚类。其中，斑状致密组合孔隙相主要分布于石英砂岩中，位于厚度较大的河道中心砂体中，残余粒间孔、次生溶孔等发育，面孔率较高，储集孔渗条件较好，是有效储集层分布的有利相带。

关键词:成岩作用;成岩相;山西组;鄂尔多斯盆地;山2₃气层砂岩

doi:10.16186/j.cnki.1673-9787.2020.3.6

基金项目:国家自然科学基金资助项目（41772130）

收稿日期:2019/07/22

修回日期:2019/09/26

出版日期:2020/05/15

Diagenetic facies and controlling factors of the sandstones from Shan 2₃ gas layers in the Suide-Wubu area， eastern Ordos basin

YAO Jingli1, LI Mi2,3, WANG Huaichang1, GUO Yinghai2,3, HOU Yundong1, BAI Wanbei2

1.Research Institute of Petroleum Exploration and Development， Changqing Oilfield Company， PetroChina ， Xi’an  710021 ， Shaanxi， China;2.Key Laboratory of CBM Resource and Reservoir-Generating Process，Xuzhou  221008 ， Jiangsu， China;3.School ofResources and Earth Science， China University of Mining & Technology， Xuzhou  221116 ， Jiangsu， China;4.School of Resources and Environment， Henan Polytechnic University， Jiaozuo  454000 ， Henan， China

Abstract:The study of diagenetic facies can provide reference for the search of effective reservoir. Based on the systematic observation and identification of 493 thin sections of sandstone samples from the 2₃ gas reservoir of Shanxi Formation in Suide-Wubao area， eastern Ordos basin， the main diagenesis types and characteristics of the sandstone reservoir were studied. According to the micro development characteristics of main diagenesis and reservoir physical properties， the diagenetic facies division scheme was established， and the characteristics， distribution rules and control factors of various diagenetic facies were studied. The sandstone reservoir of Shan 2₃ gas reservoir in the study area was in the middle diagenetic stage B ， which had undergone the transformation of compaction， cementation and dissolution. The diagenetic facies could be divided into three major categories and seven sub-categories. Among them， the porphyry tight assemblage pore facies was mainly distributed in quartz sandstone， which was located in the sand body in the center of river channel with large thickness. In addition， the residual intergranular pores and secondary dissolved pores were well observed in these sandstones， with high face porosities and good reservoir porosity and permeability conditions， which were favorable facies belts for effective reservoir distribution.

Key words:diagenesis;diagenetic facies;Shanxi formation;Ordos basin;Shan 2₃ gas layer sandstone

鄂尔多斯盆地东部绥德_吴堡地区山2_3气层砂岩成岩相类型与控因_姚泾利.pdf