Lithologic Reservoirs ›› 2017, Vol. 29 ›› Issue (6): 32-42.doi: 10.3969/j.issn.1673-8926.2017.06.005

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Characteristics of Chang 8 reservoir in Zhengning area,Ordos Basin

ZENG Yuan1, CHEN Shijia1, LI Shixiang2, LU Jungang1   

  1. 1. School of Earth Science and Technology, Southwest Petroleum University, Chengdu 610500, China;
    2. Research Institute of Exploration and Development, PetroChina Changqing Oilfield Company, Xi'an 710018, China
  • Received:2017-04-26 Revised:2017-06-10 Online:2017-11-21 Published:2017-11-21

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Abstract: In order to promote the exploration and development of tight oil and gas in Zhengning area, Ordos Basin, based on core slice,scanning electron microscope and mercury injection data, reservoir characteristics, reservoir densification and relationship between physical properties and oil-bearing property were analyzed. The Chang 8 sandstone is mainly composed of feldspar lithic sandstone and lithic feldspar sandstone,with high content of interstitial matter, which is mainly composed by ferroan calcite, hydromica, chlorite membrane, kiesel, and kaolinite. The Chang 8 sandstone is low in clastic structure maturity, which is mainly medium-sorted subangular particles. Matrix pores and natural fractures jointly form reservoir pore system,and matrix pores are mainly small pores with fine throat. Compaction and cementation are main densification origins for Chang 8 tight reservoir. Natural fractures are main percolation pathway,and together with dissolution,they improved reservoir physical properties. Physical properties of Chang 81 reservoir are obviously better than that of Chang 82 reservoir. Oil-bearing is relative with physical property. Better physical property is the key for high oil production.

Key words: tight gas reservoirs, stress-strain curve, uniaxial compressive experiments, brittleness index, reservoir brittleness evaluation

CLC Number: 

  • TE122.2+2
[1] 梁承春, 郭景祥.鄂尔多斯盆地红河油田延长组长81小层致密砂岩成岩作用与储层特征. 油气地质与采收率, 2017, 24(1):57-63. LIANG C C, GUO J X. Diagenesis and reservoir characteristics of tight sandstones of Chang 81 member of Yanchang Formation in Honghe oilfield, Ordos Basin. Petroleum Geology and Recovery Efficiency, 2017, 24(1):57-63.
[2] 巩磊, 高铭泽, 曾联波, 等.影响致密砂岩储层裂缝分布的主控因素分析——以库车前陆盆地侏罗系-新近系为例.天然气地球科学, 2017, 28(2):199-208.GONG L, GAO M Z, ZENG L B, et al. Controlling factors on fracture development in the tight sandstone reservoirs:a case study of Jurassic-Neogene in the Kuqa forland basin. Natural Gas Geoscience, 2017, 28(2):199-208.
[3] 王维斌, 朱静, 马文忠, 等.鄂尔多斯盆地周家湾地区长8致密砂岩储层特征及影响因素.岩性油气藏, 2017, 29(1):51-58. WANG W B, ZHU J, MA W Z, et al. Characteristics and influencing factors of Chang 8 tight sandstone reservoir of Triassic Yanchang Formation in Zhoujiawan area, Ordos Basin. Lithologic Reservoirs, 2017, 29(1):51-58.
[4] 李会军, 吴泰然, 吴波, 等.中国优质碎屑岩深层储层控制因素综述.地质科技情报, 2004, 23(4):76-82. LI H J, WU T R, WU B, et al. Distribution and controlling factors of high quality clastic deeply buried reservoirs in China. Geological Science and Technology Information, 2004, 23(4):76-82.
[5] 冯佳睿, 高志勇, 崔京钢, 等.深层、超深层碎屑岩储层勘探现状与研究进展.地球科学进展, 2016, 31(7):718-736. FENG J R, GAO Z Y, CUI J G, et al. The exploration status and research advances of deep and ultra-deep clastic reservoirs. Advances in Earth Science, 2016, 31(7):718-736.
[6] BLOCH S, LANDER R H, BONNELL I. Anom alously high porosity and permeability in deeply buried sandstone reservoirs:origin and predictability. AAPG Bulletin, 2002, 86(2):301-328.
[7] WILKINSON M D, HASZELDINE R S, COUPLES G D. Secondary porosity generation during deep burial associated with overpressure leak-off:Fulmar Formation, United Kingdom central Graben. AAPG Bulletin, 1997, 81(5):803-813.
[8] 于波, 崔智林, 刘学刚, 等.西峰油田长8储层砂岩成岩作用及对孔隙影响. 吉林大学学报(地球科学版), 2008, 38(3):405-410. YU B, CUI Z L, LIU X G, et al. The diagenesis of Chang 8 reservoir sandstone and its effect on porosity in Xifeng oilfield. Journal of Jilin University(Earth Science Edition), 2008, 38(3):405-410.
[9] 张一果,孙卫,任大忠,等.鄂尔多斯盆地英旺油田长8储层微观孔隙结构特征研究.岩性油气藏, 2013, 25(3):71-76. ZHANG Y G, SUN W, REN D Z, et al. Study on micro-pore structure characteristics of Chang 8 reservoir in Yingwang oilfield, Ordos Basin. Lithologic Reservoirs, 2013, 25(3):71-76.
[10] 张创, 孙卫, 高辉, 等.鄂尔多斯盆地华池长8储层成岩相与孔隙度演化.地球科学——中国地质大学学报, 2014, 39(4):411-420. ZHANG C, SUN W, GAO H, et al. Reservoir diagenetic facies and porosity evolution pathways of Chang 8 formation in Huachi, Ordos Basin. Earth Science-Journal of China University of Geosciences, 2014, 39(4):411-420.
[11] 王志坤, 王多云,郑希民,等. 陕甘宁盆地陇东地区三叠系延长统长6-长8储层沉积特征及物性分析.天然气地球科学, 2003, 14(5):380-385. WANG Z K, WANG D Y, ZHENG X M, et al. Depositional characteristics and physical behavior analysis of the Chang 6-8 reservoir of Triassic Yanchang formation in Longdong area, Shanganning. Natural Gas Geoscience, 2003, 14(5):380-385.
[12] 段悦, 侯长冰, 郑荣才, 等.镇原地区长8油层组层序-岩相古地理特征及砂体展布规律.岩性油气藏, 2014, 26(1):36-44. DUAN Y, HOU C B, ZHENG R C, et al. Sequence based lithofacies paleogeography and sand body distribution of Chang 8 oil reservoir set in Zhenyuan area, Ordos Basin. Lithologic Reservoirs, 2014, 26(1):36-44.
[13] 刘春雷, 李文厚, 袁珍, 等.鄂尔多斯盆地东南缘上三叠统长8段砂岩储层成岩作用与孔隙演化. 地质通报, 2013, 32(5):807-814. LIU C L, LI W H, YUAN Z, et al. Diagenesis and porosity evolution of Chang 8 oil bearing in southeast Ordos Basin. Geological Bulletin of China, 2013, 32(5):807-814.
[14] 曾联波, 张建英.大民屯凹陷静北潜山油藏裂缝及其渗流特征.石油大学学报(自然科学版), 2001, 25(1):34-36. ZENG L B, ZHANG J Y. Characteristics of fractures and their percolation in Jingbei buried-hill pool in Damingtun depression. Journal of the University of Petroleum, China(Edition of Natural Science), 2001, 25(1):34-36.
[15] 曾联波, 高春宇, 漆家福, 等.鄂尔多斯盆地陇东地区特低渗透砂岩储层裂缝分布规律及其渗流作用.中国科学:D辑地球科学, 2008,(增刊1):41-47. ZENG L B, GAO C Y, QI J F, et al. Distribution and percolation of fractures in low permeability sandstone reservoir in Longdong area, Ordos Basin. Science in China:Series D Earth Science, 2008,(Suppl 1):41-47.
[16] 张晓磊, 刘鑫, 陈振波, 等. 鄂尔多斯盆地东南部黄陵地区延长组裂缝特征及形成期次探讨. 科学技术与工程, 2015, 15(19):11-14. ZHANG X L, LIU X, CHEN Z B, et al. Fracture characteristics and stages of Yanchang Formation in Huangling area of southeastern Ordos Basin. Science Technology and Engineering, 2015, 15(19):11-14.
[17] 张晓磊, 章辉若, 刘鑫, 等. 鄂尔多斯盆地黄陵油田延长组长6储层致密成因.石油地质与工程, 2014, 28(6):34-35. ZHANG X L, ZHANG H R, LIU X, et al. Densification factors of Chang 6 reservoir of Yanchang Formation in Huangling oil field of southeastern Ordos Basin. Petroleum Geology and Engineering, 2014,28(6):34-35.
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