Lithologic Reservoirs ›› 2023, Vol. 35 ›› Issue (3): 66-75.doi: 10.12108/yxyqc.20230306

• PETROLEUM EXPLORATION • Previous Articles     Next Articles

Characteristics and genesis of Upper Triassic Chang 8 reservoir with low oil saturation in northern Pingliang area， Ordos Basin

BAI Yang1,2, ZHANG Xiaolei3, GANG Wenzhe1,2, ZHANG Zhongyi3, YANG Shangru4, PANG Jinlian3, CAO Jingjing1,2, HOU Yunchao3   

  1. 1. State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum(Beijing), Beijing 102249, China;
    2. College of Geosciences, China University of Petroleum(Beijing), Beijing 102249, China;
    3. Research Institute of Exploration and Development, PetroChina Changqing Oilfield Company, Xi'an 710018, China;
    4. Research Institute of Oil and Gas Technology, PetroChina Changqing Oilfield Company, Xi'an 710018, China
  • Received:2022-07-25 Revised:2022-08-15 Online:2023-05-01 Published:2023-04-25

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Abstract: Through core physical property analysis， constant pressure mercury injection and nuclear magnetic resonance testing，combined with oil source and structure，the characteristics and genesis of Upper Triassic Chang 8 reservoir with low oil saturation in northern Pingliang area of Ordos Basin were analyzed. The results show that： （1）The oil saturation of Upper Triassic Chang 8 reservoir is generally less than 20%， while the water saturation is generally greater than 50%. It is a typical low oil saturation reservoir with low single well production and poor oil-water difference. The reservoir is sporadically distributed at the top of Chang 8 member.（2）Insufficient hydrocarbon supply is the fundamental reason for the low oil saturation of the reservoirs in the study area. It is an allochthonous oil reservoir in well M53 well，and the long distance of hydrocarbon supply leads to insufficient hydrocarbon supply. It is in-situ hydrocarbon accumulation in well Y80， and the small amount of hydrocarbon expulsion from in-situ source rocks results in insufficient oil and gas filling.（3） Affected by low-amplitude structures，vertical and lateral migration power is insufficient in well M53 well. The strong physical heterogeneity of the reservoirs in the whole area， the relatively developed micro pore throats in the pore structure， and the high percentage of bound water，resulted in low saturation after oil and gas displacement of movable water，which indirectly led to scattered distribution and low oil saturation of the reservoirs in northern Pingliang area.（4）The reservoirs with good physical property at the structural high point in the southwestern Shangxinzhuang area in M53 well area are important targets for the next step of increasing reserves and production.

Key words: low oil saturation, oil and gas charging, hydrocarbon supply distance, bound water, movable water, Chang 8 reservoir, Upper Triassic, northern Pingliang area, Ordos Basin

CLC Number: 

  • TE122.2
[1] 李荣西,段立志,张少妮,等.鄂尔多斯盆地低渗透油气藏形成研究现状与展望[J].地球科学与环境学报, 2011, 33(4):364-372. LI Rongxi, DUAN Lizhi, ZHANG Shaoni, et al. Review on oil/gas accumulation with low permeability in Ordos Basin[J]. Journal of Earth Sciences and Environment, 2011, 33(4):364-372.
[2] 王变阳,贺永红,王康乐,等.鄂尔多斯盆地定边-安塞地区延长组下组合储层特征[J].岩性油气藏, 2014, 26(6):64-68. WANG Bianyang, HE Yonghong, WANG Kangle, et al. Characteristics of lower assemblage reservoir of Yanchang Formation in Dingbian-Ansai area, Ordos Basin[J]. Lithologic Reservoirs, 2014, 26(6):64-68.
[3] 惠潇,赵彦德,邵晓州,等.鄂尔多斯盆地中生界石油地质条件、资源潜力及勘探方向[J].海相油气地质, 2019, 24(2):14-22. HUI Xiao, ZHAO Yande, SHAO Xiaozhou, et al. The geological conditions, resource potential, and exploration direction of oil in Ordos Basin[J]. Marine Origin Petroleum Geology, 2019, 24(2):14-22.
[4] 邵晓州,王苗苗,齐亚林,等.鄂尔多斯盆地平凉北地区长8油藏特征及成藏主控因素[J].岩性油气藏, 2021, 33(6):59-69. SHAO Xiaozhou, WANG Miaomiao, QI Yalin, et al. Characteristics and main controlling factors of Chang 8 reservoir in northern Pingliang area, Ordos Basin[J]. Lithologic Reservoirs, 2021, 33(6):59-69.
[5] 白青林,杨少春,马芸,等.鄂尔多斯盆地西南缘长8段油源多元精细对比[J].断块油气田, 2018, 25(6):689-694. BAI Qinglin, YANG Shaochun, MA Yun, et al. Oil-source rock fine multiple correlation of Chang 8 section in southwest of Ordos Basin[J]. Fault-Block Oil&Gas Field, 2018, 25(6):689-694.
[6] 赵彦德,邓秀芹,齐亚林,等.鄂尔多斯盆地平凉北地区M53井烃源岩地球化学特征与长8段油层油源[J].现代地质, 2020, 34(4):800-811. ZHAO Yande, DENG Xiuqin, QI Yalin, et al. Geochemical characteristics of source rock of M53 well and Chang 8 member oilsource in Pingliangbei exploration area, Ordos Basin[J]. Geoscience, 2020, 34(4):800-811.
[7] 郑登艳,王震亮,王联国,等.低幅度构造特征及其对油气成藏的控制作用:以鄂尔多斯盆地彭阳地区延安组为例[J].现代地质, 2021, 35(4):1114-1123. ZHENG Dengyan, WANG Zhenliang, WANG Lianguo, et al. Low-amplitude structures and its control on hydrocarbon enrichment and accumulation:An example from Yan'an Formation in Pengyang area, Ordos Basin[J]. Geoscience, 2021, 35(4):1114-1123.
[8] 李程善,张文选,雷宇,等.鄂尔多斯盆地陇东地区长9油层组砂体成因与油气差异分布[J].地球科学, 2021, 46(10):3560-3574. LI Chengshan, ZHANG Wenxuan, LEI Yu, et al. Characteristics and controlling factors of oil accumulation in Chang 9 member in Longdong area, Ordos Basin[J]. Earth Sciences, 2021, 46(10):3560-3574.
[9] CHANG Yibo, CHEN Shijia, LIU Yang, et al. Reservoir characteristics and fluid properties logging identification method of Chang 81 in Pengyang-Pingliang area, Ordos Basin[J]. International Core Journal of Engineering, 2022, 8(1):688-694.
[10] 屈文强,薛小宝,王志坤,等.低含油饱和度油藏特征与成因:以鄂尔多斯盆地郝家坪西区长2油藏为例[J].新疆地质, 2021, 39(3):456-460. QU Wenqiang, XUE Xiaobao, WANG Zhikun, et al. Characteristics and genesis of low oil saturation reservoir:Taking Chang 2 reservoir in the west of Haojiaping area as an example, Ordos Basin[J]. Xinjiang Geology, 2021, 39(3):456-460.
[11] 刘柏林,王友启.准噶尔盆地中部Ⅰ区块低含油饱和度油藏形成机理[J].新疆石油地质, 2010, 31(3):273-275. LIU Bolin, WANG Youqi. Low oil-saturated reservoir-forming mechanism in No.1 area in central Junggar Basin[J]. Xinjiang Petroleum Geology, 2010, 31(3):273-275.
[12] 李卓,姜振学,李峰.塔里木盆地塔中16石炭系低含油饱和度油藏成因机理[J].地球科学——中国地质大学学报, 2014, 39(5):557-564. LI Zhuo, JIANG Zhenxue, LI Feng. Genetic mechanism of carboniferous low-oil saturation reservoirs in Tazhong-16 well block[J]. Earth Science-Journal of China University of Geosciences, 2014, 39(5):557-564.
[13] 王兴刚,郭金盾,黄蝶芳,等.红台地区低饱和度油藏特征及主控因素[J].中国石油石化, 2016, 18(23):15-16. WANG Xinggang, GUO Jindun, HUANG Diefang, et al. The characteristics and main control factors of low saturation reservoirs in Hongtai area[J]. China Petrochem, 2016, 18(23):15-16.
[14] 刘柏林.低含油饱和度油藏成因及渗流特征研究[D].北京:中国地质大学(北京), 2008. LIU Bolin. Study on the causes and seepage characteristics of low oil saturation reservoirs[D]. Beijing:University of Geosciences of China (Beijing), 2008.
[15] 周新平,邓秀芹,李士祥,等.鄂尔多斯盆地延长组下组合地层水特征及其油气地质意义[J].岩性油气藏, 2021, 33(1):109-120. ZHOU Xinping, DENG Xiuqin, LI Shixiang, et al. Characteristics of formation water and its geological significance of lower combination of Yanchang Formation in Ordos Basin[J]. Lithologic Reservoirs, 2021, 33(1):109-120.
[16] 付金华,李士祥,牛小兵,等.鄂尔多斯盆地三叠系长7段页岩油地质特征与勘探实践[J].石油勘探与开发, 2020, 47(5):870-883. FU Jinhua, LI Shixiang, NIU Xiaobing, et al. Geological characteristics and exploration of shale oil in Chang 7 member of Triassic Yanchang Formation, Ordos Basin, NW China[J]. Petroleum Exploration&Development, 2020, 47(5):870-883.
[17] 魏钦廉,崔改霞,刘美荣,等.鄂尔多斯盆地西南部二叠系盒8下段储层特征及控制因素[J].岩性油气藏, 2021, 33(2):17-25. WEI Qinlian, CUI Gaixia, LIU Meirong, et al. Reservoir characteristics and controlling factors of Permian lower He 8 member in south-western Ordos Basin[J]. Lithologic Reservoirs, 2021, 33(2):17-25.
[18] 付金华,郭正权,邓秀芹.鄂尔多斯盆地西南地区上三叠统延长组沉积相及石油地质意义[J].古地理学报, 2005, 7(1):34-44. FU Jinhua, GUO Zhengquan, DENG Xiuqin. Sedimentary facies and petroleum geological significance of the Upper Triassic Yanchang Formation in southwestern Ordos Basin[J]. Journal of Palaeogeography, 2005, 7(1):34-44.
[19] 胡作维,李云,王海红,等.鄂尔多斯盆地镇原地区长8油层组超低渗储层孔隙结构特征[J].岩性油气藏, 2014, 26(2):15-20. HU Zuowei, LI Yun, WANG Haihong, et al. Pore structure characteristics of ultra-low permeability reservoirs of Chang 8 oil reservoir set in Zhenyuan area, Ordos Basin[J]. Lithologic Reservoirs, 2014, 26(2):15-20.
[20] 张雪峰,赵彦德,张铭记.鄂尔多斯盆地西南缘延长组存在差异构造运动的地质意义[J].岩性油气藏, 2010, 22(3):78-82. ZHANG Xuefeng, ZHAO Yande, ZHANG Mingji. Differential tectonic movement of Yanchang Formation in southwestern margin of Ordos Basin and its geologic significance[J]. Lithologic Reservoirs, 2010, 22(3):78-82.
[21] 赵彦德,齐亚林,罗安湘,等.应用流体包裹体和自生伊利石测年重构鄂尔多斯盆地侏罗系油藏烃类充注史[J].吉林大学学报(地球科学版), 2016, 46(6):1637-1648. ZHAO Yande, QI Yalin, LUO Anxiang, et al. Application of fluid inclusions and dating of authigenic illite in reconstruction Jurassic reservoirs hydrocarbon filling history, Ordos Basin[J]. Journal of Jilin University (Earth Science Edition), 2016, 46(6):1637-1648.
[22] 李明诚.石油与天然气运移研究综述[J].石油勘探与开发, 2000, 27(4):3-9. LI Mingcheng. A review of oil and gas migration[J]. Petroleum Exploration&Development, 2000, 27(4):3-9.
[23] 罗晓容,王忠楠,雷裕红,等.特超低渗砂岩油藏储层非均质性特征与成藏模式:以鄂尔多斯盆地西部延长组下组合为例[J].石油学报, 2016, 37(增刊1):87-98. LUO Xiaorong, WANG Zhongnan, LEI Yuhong, et al. Heterogeneity characteristics and accumulation model of ultra-low permeability sandstone reservoirs:A case study of the lower part of Yanchang Formation in the western Ordos Basin, China[J]. Acta Petrolei Sinica, 2016, 37(Suppl 1):87-98.
[24] 罗晓容,张立强,张立宽,等.碎屑岩输导层非均质性与油气运聚成藏[J].石油学报, 2020, 41(3):253-272. LUO Xiaorong, ZHANG Liqiang, ZHANG Likuan, et al. Heterogeneity of clastic carrier bed and hydrocarbon migration and accumulation[J]. Acta Petrolei Sinica, 2020, 41(3):253-272.
[25] 张晓辉,张娟,袁京素,等.鄂尔多斯盆地南梁-华池地区长81致密储层微观孔喉结构及其对渗流的影响[J].岩性油气藏, 2021, 33(2):36-48. ZHANG Xiaohui, ZHANG Juan, YUAN Jingsu, et al. Micro pore throat structure and its influence on seepage of Chang 81 tight reservoir in Nanliang-Huachi area, Ordos Basin[J]. Lithologic Reservoirs, 2021, 33(2):36-48.
[26] ZANG Qibiao, LIU Chengbin, AWAR R S, et al. Occurrence characteristics of the movable fluid in heterogeneous sandstone reservoir based on fractal analysis of NMR data:A case study of the Chang 7 member of Ansai block, Ordos Basin, China[J]. Journal of Petroleum Science and Engineering, 2022, 214:110499.
[27] ZHANG Quanpei, LIU Yicang, WANG Botao, et al. Effects of pore-throat structures on the fluid mobility in Chang 7 tight sandstone reservoirs of Longdong area, Ordos Basin[J]. Marine and Petroleum Geology, 2022, 135:105407.
[28] 刘蝶.核磁共振在低渗透砂岩低对比度油层成因分析及识别中的应用[D].北京:中国地质大学(北京), 2020. LIU Die. Application of nuclear magnetic resonance in genesis analysis and identification of low permeability and low contrast sandstone reservoirs[D]. Beijing:China University of Geosciences (Beijing), 2020.
[29] 朱明,贾春明,穆玉庆,等.基于正态分布拟合的致密砂砾岩储层核磁共振测井可变T2截止值计算方法[J].石油地球物理勘探, 2021, 56(3):612-621. ZHU Ming, JIA Chunming, MU Yuqing, et al. Calculation method of variable T 2 cut-off value of NMR logging in tight glutenite reservoir based on normal distribution fitting[J]. Oil Geophysical Prospecting, 2021, 56(3):612-621.
[30] 卢振东,刘成林,臧起彪,等.高压压汞与核磁共振技术在致密储层孔隙结构分析中的应用:以鄂尔多斯盆地合水地区为例[J].地质科技通报, 2022, 41(3):300-310. LU Zhendong, LIU Chenglin, ZANG Qibiao, et al. Application of high pressure mercury injection and nuclear magnetic resonance:A case study of Heshui area, Ordos Basin[J]. Bulletin of Geological Science and Technology, 2022, 41(3):300-310.
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