XU Yongqiang, HE Yonghong, BU Guangping, CHEN Lin, LIU Linyu, ZHU Yushuang. Establishment of classification and evaluation criteria for tight reservoirs based on characteristics of microscopic pore throat structure and percolation: a case study of Chang 7 reservoir in Longdong area, Ordos Basin[J]. PETROLEUM GEOLOGY & EXPERIMENT, 2019, 41(3): 451-461. doi: 10.11781/sysydz201903451
Citation: XU Yongqiang, HE Yonghong, BU Guangping, CHEN Lin, LIU Linyu, ZHU Yushuang. Establishment of classification and evaluation criteria for tight reservoirs based on characteristics of microscopic pore throat structure and percolation: a case study of Chang 7 reservoir in Longdong area, Ordos Basin[J]. PETROLEUM GEOLOGY & EXPERIMENT, 2019, 41(3): 451-461. doi: 10.11781/sysydz201903451

Establishment of classification and evaluation criteria for tight reservoirs based on characteristics of microscopic pore throat structure and percolation: a case study of Chang 7 reservoir in Longdong area, Ordos Basin

doi: 10.11781/sysydz201903451
  • Received Date: 2018-11-21
  • Rev Recd Date: 2019-04-08
  • Publish Date: 2019-05-28
  • Taking the Chang 7 reservoir in the Longdong area of the Ordos Basin as an example, the microscopic pore throat characteristics were comprehensively analyzed through physical analysis, casting thin section, scanning electron microscope, CT scanning, high pressure mercury injection and constant rate mercury injection experiments. Fluid seepage was analyzed by NMR and visualized multiphase seepage experiments. Some reasonable evaluation parameters were selected to classify and evaluate tight reservoirs. The average porosity and permeability of the Chang 7 tight reservoir in the Longdong area are 9.33% and 0.18×10-3 μm2, respectively. The main pore types are feldspar dissolved pore and intergranular pore, with an average plane porosity of 1.89%. The pore throat radius is small, mainly distributed in the range of less than 1 μm. Its reservoir capacity is strong, but its connectivity is poor. The movable fluid saturation and oil displacement efficiency are mainly controlled by the fine pore throat, and the heterogeneity also has a certain influence on the oil displacement efficiency. Porosity, permeability, plane porosity, average pore throat radius, mean value coefficient, displacement pressure, movable fluid saturation and oil displacement efficiency are selected as evaluation parameters, and a multi-classification coefficient method is used to classify and establish an evaluation criteria for tight reservoirs, which are divided into Ⅰ, Ⅱ, Ⅲ and IV from good to bad.

     

  • loading
  • [1]
    邹才能,杨智,张国生,等.常规-非常规油气“有序聚集”理论认识及实践意义[J].石油勘探与开发,2014,41(1):14-27.

    ZOU Caineng,YANG Zhi,ZHANG Guosheng,et al.Conventional and unconventional petroleum “orderly accumulation”:Concept and practical significance[J].Petroleum Exploration and Development,2014,41(1):14-27.
    [2]
    胡素云,朱如凯,吴松涛,等.中国陆相致密油效益勘探开发[J].石油勘探与开发,2018,45(4):737-748.

    HU Suyun,ZHU Rukai,WU Songtao,et al.Profitable exploration and development of continental tight oil in China[J].Petroleum Exploration and Development,2018,45(4):737-748.
    [3]
    施立志,王卓卓,张永生.松辽盆地齐家地区高台子油层致密油分布及地质特征[J].天然气地球科学,2014,25(12):1943-1950.

    SHI Lizhi,WANG Zhuozhuo,ZHANG Yongsheng.Distribution and geological characteristics of tight oil in Gaotaizi oil layer of Qijia area,Songliao Basin[J].Natural Gas Geoscience,2014,25(12):1943-1950.
    [4]
    孙赞东,贾承造,李相方.非常规油气勘探与开发[M].北京:石油工业出版社,2011:1-150. SUN Zandong,JIA Chengzao,LI Xiangfang.Unconventional oil & gas exploration and development[M].Beijing:Petroleum Industry Press,2011:1-150.
    [5]
    邹才能,陶士振,侯连华,等.非常规油气地质[M].北京:地质出版社,2011. ZOU Caineng,TAO Shizhen,HOU Lianhua,et al.Unconventional petroleum geology[M].Beijing:Geological Publishing House,2011.
    [6]
    朱筱敏,潘荣,朱世发,等.致密储层研究进展和热点问题分析[J].地学前缘,2018,25(2):141-146.

    ZHU Xiaomin,PAN Rong,ZHU Shifa,et al.Research progress and core issues in tight reservoir exploration[J].Earth Science Frontiers,2018,25(2):141-146.
    [7]
    朱如凯,吴松涛,苏玲,等.中国致密储层孔隙结构表征需注意的问题及未来发展方向[J].石油学报,2016,37(11):1323-1336.

    ZHU Rukai,WU Songtao,SU Ling,et al.Problems and future works of porous texture characterization of tight reservoirs in China[J].Acta Petrolei Sinica,2016,37(11):1323-1336.
    [8]
    王伟明,卢双舫,李杰,等.致密砂岩储层微观孔隙特征评价:以中国吐哈盆地为例[J].天然气地球科学,2016,27(10):1828-1836.

    WANG Weiming,LU Shuangfang,LI Jie,et al.Analyses of micro-pore structural characteristics of tight sandstone reservoirs:a case study in Turpan-Hami Basin,Northwestern China[J].Natural Gas Geoscience,2016,27(10):1828-1836.
    [9]
    XI Kelai,CAO Yingchang,HAILE B G,et al.How does the pore-throat size control the reservoir quality and oiliness of tight sandstones?The case of the Lower Cretaceous Quantou Formation in the southern Songliao Basin,China[J].Marine and Petroleum Geology,2016,76:1-15.
    [10]
    NELSON P H.Pore-throat sizes in sandstones,tight sandstones,and shales[J].AAPG Bulletin,2009,93(3):329-340.
    [11]
    ZHANG Luchuan,LU Shuangfang,XIAO Dianshi,et al.Pore structure characteristics of tight sandstones in the northern Songliao Basin,China[J].Marine and Petroleum Geology,2017,88:170-180.
    [12]
    林卫兵,陈林,陆永潮,等.鄂尔多斯盆地西南部镇泾地区长8油层组致密储层评价[J].地质与勘探,2017,53(2):381-389.

    LIN Weibing,CHEN Lin,LU Yongchao,et al.Tight reservoir evaluation of the Chang 8 oil group in the Zhenjing area,southwestern Ordos Basin[J].Geology and Exploration,2017,53(2):381-389.
    [13]
    周翔,何生,刘萍,等.鄂尔多斯盆地代家坪地区长6致密油储层孔隙结构特征及分类评价[J].地学前缘,2016,23(3):253-265.

    ZHOU Xiang,HE Sheng,LIU Ping,et al.Characteristics and classification of tight oil pore structure in reservoir Chang 6 of Daijiaping area,Ordos Basin[J].Earth Science Frontiers,2016,23(3):253-265.
    [14]
    马世忠,张宇鹏.应用压汞实验方法研究致密储层孔隙结构:以准噶尔盆地吉木萨尔凹陷芦草沟组为例[J].油气地质与采收率,2017,24(1):26-33.

    MA Shizhong,ZHANG Yupeng.Study on the pore structure of tight reservoir by using method of mercury injection:a case study of the Lucaogou Formation in Jimsar sag,Junggar Basin[J].Petroleum Geology and Recovery Efficiency,2017,24(1):26-33.
    [15]
    蔡来星,卢双舫,张训华,等.基于孔喉结构建立致密砂岩储层评价方案:以松南中央坳陷泉四段为例[J].吉林大学学报(地球科学版),2017,47(6):1654-1667. CAI Laixing,LU Shuangfang,ZHANG Xunhua,et al.Establishment of evaluation scheme of tight sandstone reservoirs based on pore throat:a case study on the 4th member of Quantou formation at central depression of southern Songliao Basin[J].Journal of Jilin University(Earth Science Edition),2017,47(6):1654-1667.
    [16]
    肖佃师,卢双舫,姜微微,等.基于粒间孔贡献量的致密砂岩储层分类:以徐家围子断陷为例[J].石油学报,2017,38(10):1123-1134.

    XIAO Dianshi,LU Shuangfang,JIANG Weiwei,et al.Classification of tight sandstone reservoirs based on the contribution of intergra-nular pores:a case study of Xujiaweizi fault depression[J].Acta Petrolei Sinica,2017,38(10):1123-1134.
    [17]
    柴毓,王贵文.致密砂岩储层岩石物理相分类与优质储层预测:以川中安岳地区须二段储层为例[J].岩性油气藏,2016,28(3):74-85.

    CHAI Yu,WANG Guiwen.Petrophysical facies classification of tight sandstone reservoir and high-quality reservoir prediction:a case study from the second member of Xujiahe Formation in Anyue area,central Sichuan Basin[J].Lithologic Reservoirs,2016,28(3):74-85.
    [18]
    姚泾利,邓秀芹,赵彦德,等.鄂尔多斯盆地延长组致密油特征[J].石油勘探与开发,2013,4(2):150-158.

    YAO Jingli,DENG Xiuqin,ZHAO Yande,et al.Characteristics of tight oil in Triassic Yanchang Formation,Ordos Basin[J].Petroleum Exploration and Development,2013,4(2):150-158.
    [19]
    杨华,李士祥,刘显阳.鄂尔多斯盆地致密油、页岩油特征及资源潜力[J].石油学报,2013,34(1):1-11.

    YANG Hua,LI Shixiang,LIU Xianyang.Characteristics and resource prospects of tight oil and shale oil in Ordos Basin[J].Acta Petrolei Sinica,2013,34(1):1-11.
    [20]
    郭继刚,郭凯,宫鹏骐,等.鄂尔多斯盆地延长组储层致密化及其影响下的致密油充注特征[J].石油实验地质,2017,39(2):169-179.

    GUO Jigang,GUO Kai,GONG Pengqi,et al.Reservoir densification and tight-oil charging in Yanchang Formation,Ordos Basin[J].Petroleum Geology & Experiment,2017,39(2):169-179.
    [21]
    杨华,窦伟坦,刘显阳,等.鄂尔多斯盆地三叠系延长组长7沉积相分析[J].沉积学报,2010,28(2):254-263.

    YANG Hua,DOU Weitan,LIU Xianyang,et al.Analysis on sedimentary facies of member 7 in Yanchang Formation of Triassic in Ordos Basin[J].Acta Sedimentologica Sinica,2010,28(2):254-263.
    [22]
    郭凯.鄂尔多斯盆地陇东地区长7段有效烃源岩及生排烃研究[J].石油实验地质,2017,39(1):15-23.

    GUO Kai.Active source rocks of Chang 7 member and hydrocarbon generation and expulsion characteristics in Longdong area,Ordos Basin[J].Petroleum Geology & Experiment,2017,39(1):15-23.
    [23]
    杨华,牛小兵,罗顺社,等.鄂尔多斯盆地陇东地区长7段致密砂体重力流沉积模拟实验研究[J].地学前缘,2015,22(3):322-332.

    YANG Hua,NIU Xiaobing,LUO Shunshe,et al.Research of simulated experiment on gravity flow deposits of tight sand bodies of Chang 7 Formation in Longdong area,Ordos Basin[J].Earth Science Frontiers,2015,22(3):322-332.
    [24]
    何崇康,成良丙,陈旭峰,等.鄂尔多斯盆地新安边油田长7致密油有效储层识别与甜点优选[J].石油实验地质,2017,39(6):812-818.

    HE Chongkang,CHENG Liangbing,CHEN Xufeng,et al.Effective reservoir identification and “sweet spot” optimization of Chang 7 tight oil reservoir in Xin'anbian oil field,Ordos Basin[J].Petro-leum Geology & Experiment,2017,39(6):812-818.
    [25]
    祝海华,钟大康,姚泾利,等.鄂尔多斯西南地区长7段致密油储层微观特征及成因机理[J].中国矿业大学学报,2014,43(5):853-863.

    ZHU Haihua,ZHONG Dakang,YAO Jingli,et al.Microscopic characteristics and formation mechanism of Upper Triassic Chang 7 tight oil reservoir in the southwest Ordos Basin[J].Journal of China University of Mining & Technology,2014,43(5):853-863.
    [26]
    钟大康,祝海华,孙海涛,等.鄂尔多斯盆地陇东地区延长组砂岩成岩作用及孔隙演化[J].地学前缘,2013,20(2):61-68.

    ZHONG Dakang,ZHU Haihua,SUN Haitao,et al.Diagenesis and porosity evolution of sandstones in Longdong area,Ordos Basin[J].Earth Science Frontiers,2013,20(2):61-68.
    [27]
    宋磊,宁正福,孙一丹,等.联合压汞法表征致密油储层孔隙结构[J].石油实验地质,2017,39(5):700-705.

    SONG Lei,NING Zhengfu,SUN Yidan,et al.Pore structure characterization of tight oil reservoirs by a combined mercury method[J].Petroleum Geology & Experiment,2017,39(5):700-705.
    [28]
    毕明威,陈世悦,周兆华,等.鄂尔多斯盆地苏里格气田苏6区块盒8段致密砂岩储层微观孔隙结构特征及其意义[J].天然气地球科学,2015,26(10):1851-1861.

    BI Mingwei,CHEN Shiyue,ZHOU Zhaohua,et al.Characteristics and significance of microscopic pore structure in tight sandstone reservoir of the 8th member of Lower Shihezi Formation in the Su 6 area of Sulige Gasfield[J].Natural Gas Geoscience,2015,26(10):1851-1861.
    [29]
    欧阳思琪,孙卫,黄何鑫.多方法协同表征特低渗砂岩储层全孔径孔隙结构:以鄂尔多斯盆地合水地区砂岩储层为例[J].石油实验地质,2018,40(4):595-604.

    OUYANG Siqi,SUN Wei,HUANG Hexin.Multi-method synergistic characterization of total pore structure of extra-low permeability sandstone reservoirs:case study of the Heshui area of Ordos Basin[J].Petroleum Geology & Experiment,2018,40(4):595-604.
    [30]
    任江丽,朱玉双,刘林玉,等.鄂尔多斯盆地南梁西区长4+5油层组微观渗流特征及影响因素[J].石油实验地质,2017,39(6):805-811.

    REN Jiangli,ZHU Yushuang,LIU Linyu,et al.Micro-flow characteristics and controls of Chang 4+5 reservoirs in the western Nanliang oil field,Ordos Basin[J].Petroleum Geology & Experiment,2017,39(6):805-811.
  • 加载中

Catalog

    通讯作者: 陈斌, bchen63@163.com
    • 1. 

      沈阳化工大学材料科学与工程学院 沈阳 110142

    1. 本站搜索
    2. 百度学术搜索
    3. 万方数据库搜索
    4. CNKI搜索

    Article Metrics

    Article views (937) PDF downloads(130) Cited by()
    Proportional views
    Related

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return