天然气地球科学

• 天然气地质学 • 上一篇    下一篇

准噶尔盆地阜东斜坡区侏罗系三工河组沉积微相特征及对储层的控制

鲁新川,安永福,夏维民,胡子见,张顺存,史基安   

  1. 1.甘肃省油气资源研究重点实验室/中国科学院油气资源研究重点实验室,甘肃 兰州 730000;
    2.中国石油长庆油田分公司第八采油厂,陕西 西安 710021;
    3.中国石油青海油田勘探开发研究院,甘肃 敦煌 736202;4.中国石油长庆油田分公司气田开发处,陕西 西安 710018
  • 收稿日期:2016-07-13 修回日期:2017-11-10 出版日期:2017-12-10 发布日期:2017-12-10
  • 作者简介:鲁新川(1979-),男,山东曹县人,助理研究员,博士,主要从事沉积学和石油地质学研究.E-mail:xclu@lzb.ac.cn.
  • 基金资助:
    国家科技重大专项(编号:2011ZX05008-003-40);嘉峪关市科技计划(编号:17-061);兰州大学甘肃省西部矿产资源重点实验室开放基金(编号:MRWCGS-2016-02);甘肃省重点实验室专项(编号:1309RTSA041)联合资助.

The charateristics and reservior-controling of sedimentary facies of Jurassic Sangonghe Formation at eastern Fukang Slope,Junggar Basin

Lu Xin-chuan,An Yong-fu,Xia Wei-min,Hu Zi-jian,Zhang Shun-cun,Shi Ji-an   

  1. 1.Key Laboratory of Petroleum Resources,Gansu Province / Key Laboratory of Petroleum Resources Research,
    Institute of Geology and Geophysics,Chinese Academy of Sciences,Lanzhou 730000,China;2.No.8 Oil Pruduct,Changqing Oilfield Company,PetroChina,Xi’an 710021,China;3.Research Institute of Exploration and
    Development,PetroChina Qinghai Oilfield Company,Dunhuang 736202,China;4.Gas Field Development Department,Changqing Oilfield Company,PetroChina,Xi’an 710018,China
  • Received:2016-07-13 Revised:2017-11-10 Online:2017-12-10 Published:2017-12-10

摘要:

在薄片、岩心观察及物性资料统计的基础上,对准噶尔盆地阜东斜坡区侏罗系三工河组砂岩的岩石学、沉积学和储层物性特征及其主要控制因素进行了详细研究。结果表明,阜东斜坡区储层的沉积微相和物性分别为:辫状河三角洲前缘水下分流河道微相,孔隙度平均值达到12.79%,渗透率平均值为17.61×10-3μm2;辫状河三角洲前缘席状砂微相,孔隙度平均值达到8.71%,渗透率平均为0.078×10-3μm2;辫状河三角洲前缘水下分流河道间微相,其孔隙度平均值为5.79%,渗透率平均值为0.34×10-3μm2。此外,泥质杂基含量和后期成岩作用等对三工河组储层的形成也具有重要影响,其中泥质杂基含量越高,储层物性越差;成岩作用则主要以破坏性的压实作用为主。综合阜东斜坡区三工河组沉积微相及其储层特征研究认为沉积微相对储层起主要控制作用,成岩作用为辅。其中,辫状河三角洲前缘水下分流河道微相物性最好,辫状河三角洲前缘席状砂微相物性次之,辫状河三角洲前缘水下分流河道间微相物性较差。

关键词: 沉积微相, 储层特征, 三工河组, 阜东斜坡区, 准噶尔盆地

Abstract:

Based on the observation of thin sections and cores as well as physical properties,the characteristics of the rock,sedimentology,reservoir and controlling factors of sandstones in Jurassic Sangonghe Formation in the eastern Fukang Slope were studied in detail.These show that the average porosity is up to 12.79%and average permeability is 17.61×10-3μm2 for underwater distributary channel micro-facies of braided river delta front;the average porosity reaches 8.71% and average permeability 0.078 ×10-3μm2  for braided river delta front sheet sand micro-facies;the proportion of the average is 5.79% and average permeability 0.34×10-3μm2 for braided river delta front underwater distributary inter-channel,respectively.Otherwise,the proportion of muddy matrix and diagenesis effect deeply on the reservoir physical property too,while higher content of matrix,lower physical property,and diagenesis referring mainly to compaction.All results interpret that the reservoir physical properties for underwater distributary channel micro-facies of braided river delta front is the best,the reservoir physical properties for braided river delta front sheet sand micro-facies are medium,and braided river delta front underwater distributary inter-channel micro-facies is the lowest,which may become available reservoir.

Key words: Sedimentary micro-facies, Characteristics of reservoir, Sangonghe Formation, Eastern Fukang Slope, Junggar Basin

中图分类号: 

  • TE122.2
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