期刊文献+

齐家—古龙地区高台子油层储层微观孔隙结构特征 被引量:1

Microscopic Pore Structure Characteristics of Gaotaizi Reservoir in Qijia-Gulong Area
下载PDF
导出
摘要 松辽盆地齐家—古龙地区青山口组高台子油层以致密油为主,为大庆油田重要的接替资源,但高台子油层储层微观孔隙结构特征及其纳米级微孔喉对致密油的控制研究欠缺。采用岩石普通薄片、铸体薄片、物性、压汞、核磁共振及CT图像和扫描电镜等多种测试分析方法 ,对齐家—古龙地区高台子油层储层岩石学特征、物性特征、微观孔隙类型及孔隙结构特征开展研究。结果表明:高台子油层储层以细砂岩和粉砂岩为主,砂岩类型主要为岩屑长石砂岩和长石岩屑砂岩,其成分成熟度较低,结构成熟度为低—中等;高台子油层整体为低渗—超低渗储层,储层非均质性较强,孔隙类型包括原生孔、次生孔和裂缝孔,其孔隙结构复杂,主要为细喉—微细喉孔隙结构特征,微细喉所占比例高达76%;致密储层孔隙结构等级较低,以Ⅲ级孔隙结构为主,储层中可动流体受纳米级孔喉控制,其主要分布在大于100nm的孔喉内,储层微观孔隙结构特征是控制储层渗透性的根本原因。 Tight oil is mainly produced in Gaotaizi reservoir of Qingshankou Formation in Qijia-Gulong area of Songliao Basin,which is the important replacement resource in Daqing Oilfield.But there are no research on the microscopic pore structure characteristics and the control of nano-scale micropore-throat on the tight oil in Gaotaizi reservoir.The petrological characteristics,physical properties,micropore types and pore structure characteristics of the Gaotaizi reservoir in Qijia-Gulong area were studied by various testing methods,such as common petrographic thin section,cast thin slice,analysis of physical property,mercury injection technique,nuclear magnetic resonance,CT image and scanning electron microscopy analysis technique.The results show that the rocks of Gaotaizi reservoir are mainly composed of fine sandstone and siltstone that can be classified as lithic arkoses and feldspathic litharenite.Their component maturity is low and the texural maturity is low-medium.The Gaotaizi reservoir is the one with low-ultra low permeability and strong heterogeneity.The pore types include primary pores,secondary pores and fracture pores.The pore structures of the reservoir are com-plex.The characteristics of pore structure belong to fine throat-tiny throat,and the proportion of the tiny throat is as high as 76%.The grade of pore structure of the tight reservoir is low,which is mainly grade Ⅲ.The distribution of movable fluid is controlled by nanometer pore throat in the tight reservoir,and the movable fluid mostly distributes in pore throat of more than 100 nm.The microscopic pore structure characteristics of reservoirs are the fundamental reasons for controlling reservoir permeability.
作者 张安达 陈润 Zhang Anda;Chen Run(Research Institute of Exploration and Development,Daqing Oilfield Co.,Ltd.,Daqing Heilongjiang 163712;Key Laboratory for the Research of Tight Oil and Mudstone Oil Accumulation,Heilongjiang Province,Daqing Heilongjiang 163712)
出处 《中外能源》 CAS 2018年第10期36-40,共5页 Sino-Global Energy
关键词 齐家—古龙地区 高台子油层 致密储层 岩石学特征 物性特征 微观孔隙类型 孔隙结构 渗透性 Qijia-Gulong area Gaotaizi reservoir tight reservoir petrological characteristics physical properties micropore types pore structure permeability
  • 相关文献

参考文献20

二级参考文献289

共引文献1769

同被引文献21

引证文献1

二级引证文献37

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部