Lithologic Reservoirs ›› 2021, Vol. 33 ›› Issue (5): 1-10.doi: 10.12108/yxyqc.20210501

• PETROLEUM GEOLOGY •     Next Articles

Characteristics and accumulation model of Oligocene E32 reservoir in Yingxi area,Qaidam Basin

DU Jiangmin1,2, LONG Pengyu1,2, QIN Yingmin3, ZHANG Tong4, MA Hongyu1,2, SHENG Jun5   

  1. 1. Hebei Key Laboratory of Strategic Critical Mineral Resources, Hebei GEO University, Shijiazhuang 050031, China;
    2. College of Earth Sciences, Hebei GEO University, Shijiazhuang 050031, China;
    3. CNPC Xibu Drilling Engineering Company Limited, Karamay 834000, Xinjiang, China;
    4. Geological Research Institute, CNPC Xibu Drilling Engineering Company Limited, Karamay 834000, Xinjiang, China;
    5. Research Institute of Exploration and Development, PetroChina Qinghai Oilfield Company, Dunhuang 736202, Gansu, China
  • Received:2021-04-09 Revised:2021-04-17 Online:2021-10-01 Published:2021-09-30

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Abstract: In recent years, a large oil and gas field with a reserve of 100 million tons has been found in Yingxi area of Qaidam Basin. In order to study the reservoir characteristics and accumulation model of E32 of Oligocene in Yingxi area, core observation and thin section identification, X-ray diffraction analysis, physical property test, scanning electron microscope analysis, structural evolution study and reservoir forming condition analysis were carried out. The results show that:(1) The Oligocene E32 reservoir in Yingxi area is large in scale, mainly composed of lacustrine carbonate rocks, with terrigenous clastic, argillaceous and various salt minerals.(2) The physical properties of the rock are mainly of low porosity and ultra-low permeability, and the pore types include dolomite intercrystalline pores, dissolved pores and various micro fractures.(3) The Yingxiongling area is characterized by north-south zonation and east-west segmentation, and its evolution has experienced three stages:Paleocene-Miocene fault depression(29.3-23.8 Ma), early Pliocene weak compression(23.8-7.2 Ma) and strong compression in late Pliocene-Quaternary(7.2 Ma-present).(4) The E32 reservoirs in Yingxi area have the characteristics of self-source and self-reservoir. TOC and Ro of the source rocks are mostly 0.5%-1.0% and 0.6%-0.9% respectively, with low abundance, medium quality and low maturity, but the rocks contain a lot of soluble organic matter. Highquality caprock is developed in the upper salt interlayer group, structural fractures and interlayer fractures are oil and gas migration channels, abnormal high pressure is the main driving force of oil and gas migration, and there are "overpressure+buoyancy" driving and "overpressure+diffusion" driving types. Multi-stage, continuous charging and late accumulation have laid the foundation for the formation of large oil and gas reservoirs with a billion tons. The results of this study have a guiding role for oil and gas exploration of Oligocene in Yingxi area.

Key words: reservoir characteristics, tectonic evolution, accumulation model, E32, Oligocene, Yingxi area, Qaidam Basin

CLC Number: 

  • TE121.1
[1] 张道伟, 薛建勤, 伍坤宇, 等. 柴达木盆地英西地区页岩油储层特征及有利区优选. 岩性油气藏, 2020, 32(4):1-11. ZHANG D W, XUE J Q, WU K Y, et al. Shale oil reservoir characteristics and favorable area optimization in Yingxi area, Qaidam Basin. Lithologic Reservoirs, 2020, 32(4):1-11.
[2] 张永庶, 伍坤宇, 姜英海, 等. 柴达木盆地英西深层碳酸盐岩油气藏地质特征. 天然气地球科学, 2018, 29(3):358-369. ZHANG Y S, WU K Y, JIANG Y H, et al. Geological characteristics of deep carbonate hydrocarbon-bearing pool in the western Yingxiongling area in Qaidam Basin. Natural Gas Geoscience, 2018, 29(3):358-369.
[3] 杜江民, 张小莉, 王青春, 等. 柴达木盆地英西地区E32储层裂缝发育特征. 兰州大学学报, 2017, 53(4):452-458. DU J M, ZHANG X L, WANG Q C, et al. Characteristics of the fracture of E32 reservoir in Yingxi area,Qaidam Basin. Journal of Lanzhou University(Natural Sciences), 2017, 53(4):452-458.
[4] 王建功, 张道伟, 易定红, 等. 柴西地区下干柴沟组上段湖相碳酸盐岩沉积特征及相模式. 岩性油气藏, 2018, 30(4):1-13. WANG J G, ZHANG D W, YI D H, et al. Depositional characteristics and facies model of lacustrine carbonate rocks in the upper member of lower Ganchaigou Formation in western Qaidam Basin. Lithologic Reservoirs, 2018, 30(4):1-13.
[5] 杜江民, 王青春, 聂万才, 等. 白云石有序度对湖相混积碳酸盐岩储集层物性的控制作用:以柴达木盆地英西地区渐新统为例. 现代地质, 2019, 33(3):643-652. DU J M, WANG Q C, NIE W C, et al. Controls of the degree of order of dolomite on the physical properties of lacustrine-facies diamictite carbonate reservoirs:A case study of the Yingxi area in the Qaidam Basin. Geoscience, 2019, 33(3):643-652.
[6] 马新民, 王建功, 石亚军, 等. 古近纪高丰度烃源岩:柴达木盆地西部富油凹陷成藏之本. 地质科技情报, 2018, 37(6):96-104. MA X M, WANG J G, SHI Y J, et al. Paleogene high abundance hydrocarbon source rocks, the soul of oil rich depression in southwestern Qaidam Basin. Geological Science and Technology Information, 2018, 37(6):96-104.
[7] 石亚军, 薛建勤, 马新民, 等. 高原咸化湖盆晚期构造高丰度油藏形成机制——以柴达木盆地英东地区为例. 中国矿业大学学报, 2019, 48(5):1053-1059. SHI Y J, XUE J Q, MA X M, et al. Mechanisms of high abundance hydrocarbon accumulation in neotectonics/late-stage tectonics of plateau saline lacustrine basin:Take the Yingdong area of Qaidam Basin as an example. Journal of China University of Mining & Technology, 2019, 48(5):1053-1059.
[8] 石亚军, 杨少勇, 郭佳佳, 等. 柴达木盆地深层油气成矿(藏)条件及有利区带.中国矿业大学学报, 2020, 49(3):506-522. SHI Y J, YANG S Y, GUO J J, et al. Petroleum accumulation conditions and favorable exploration plays of deeply buried strata in Qaidam Basin. Journal of China University of Mining & Technology, 2020, 49(3):506-522.
[9] 付锁堂, 马达德, 郭召杰, 等. 柴达木走滑叠合盆地及其控油气作用. 石油勘探与开发, 2015, 42(6):712-722. FU S T, MA D D, GUO Z J, et al. Strike-slip superimposed Qaidam Basin and its control on oil and gas accumulation, NW China. Petroleum Exploration and Development, 2015, 42(6):712-722.
[10] 袁剑英, 黄成刚, 曹正林, 等. 咸化湖盆白云岩碳氧同位素特征及古环境意义:以柴西地区渐新统下干柴沟组为例. 地球化学, 2015, 44(3):254-266. YUAN J Y, HUANG C G, CAO Z L, et al. The carbon and oxygen isotopic composition of saline lacustrine dolomite and palaeoenvironmental significance:A case study of the lower Eocene Ganchaigou Formation in western Qaidam Basin. Geochemistry, 2015, 44(3):254-266.
[11] 袁剑英, 黄成刚, 夏青松, 等. 咸化湖盆碳酸盐岩储层特征及孔隙形成机理:以柴西地区渐新统下干柴沟组为例. 地质论评, 2016, 62(1):111-126. YUAN J Y, HUANG C G, XIA Q S, et al. The characteristics of carbonate reservoir, and formation mechanism of pores in the saline lacustrine basin:A case study of the lower Eocene Ganchaigou Formation in western Qaidam Basin. Geological Review, 2016, 62(1):111-126.
[12] 黄成刚, 倪祥龙, 马新民, 等.致密湖相碳酸盐岩油气富集模式及稳产、高产主控因素:以柴达木盆地英西地区为例.西北大学学报(自然科学版), 2017, 47(5):724-738. HUANG C G, NI X L, MA X M, et al. Petroleum and gas enrichment pattern and major controlling factors of stable and high production of tight lacustrine carbonate rock reservoirs:A case of the Yingxi area in Qaidam Basin. Journal of Northwest University(Natural Science Edition), 2017, 47(5):724-738.
[13] 黄成刚, 常海燕, 崔俊, 等.柴达木盆地西部地区渐新世沉积特征与油气成藏模式.石油学报, 2017, 38(11):1230-1243. HUANG C G, CHANG H Y, CUI J, et al. Oligocene sedimentary characteristics and hydrocarbon accumulation model in the western Qaidam Basin. Acta Petrolei Sinica, 2017, 38(11):1230-1243.
[14] 李翔, 王建功, 张平, 等.柴达木盆地英西地区E32裂缝成因与油气地质意义.岩性油气藏, 2018, 30(6):45-54. LI X, WANG J G, ZHANG P, et al. Fracture genesis mechanism and geological significance of E32 in Yingxi area, Qaidam Basin. Lithologic Reservoirs, 2018, 30(6):45-54.
[15] 国家能源局. SY/T 6285-2011油气储层评价方法.北京:石油工业出版社, 2011. National Energy Administration. SY/T 6285-2011 Method for reservoir evaluation of oil and gas. Beijing:Petroleum Industry Press, 2011.
[16] 倪祥龙, 王建功, 郭佳佳, 等. 柴达木盆地西南地区基底断裂的控藏作用与有利区带. 岩性油气藏, 2019, 31(4):32-41. NI X L, WANG J G, GUO J J, et al. Reservoir-controlling effect of basement faults and favorable exploration zones in southwestern Qaidam Basin. Lithologic Reservoirs, 2019, 31(4):32-41.
[17] 马新民, 吴武军, 石亚军, 等.柴达木盆地英雄岭构造带油气成藏模式.中国矿业大学报, 2021, 50(2):289-303. MA X M, WU W J, SHI Y J, et al. Hydrocarbon accumulation mode of Yingxiongling structural belt in Qaidam Basin. Journal of China University of Mining & Technology, 2021, 50(2):289-303.
[18] 邹才能, 陶士振, 袁选俊, 等."连续型"油气藏及其在全球的重要性:成藏、分布与评价. 石油勘探与开发, 2009, 36(6):669-682. ZOU C N, TAO S Z, YUAN X J, et al. Global importance of "continuous" petroleum reservoirs:Accumulation, distribution and evaluation. Petroleum Exploration and Development, 2009, 36(6):669-682.
[19] 杜江民, 龙鹏宇, 杨鹏, 等. 中国陆相湖盆碳酸盐岩储集层特征及其成藏条件. 地球科学进展, 2020, 35(1):52-69. DU J M, LONG P Y, YANG P, et al. Characteristics of carbonate reservoir and its forming conditions in continental lake basin of China. Advances in Earth Science, 2020, 35(1):52-69.
[20] 黄成刚, 王建功, 吴丽荣, 等. 古近系湖相碳酸盐岩储集特征与含油性分析:以柴达木盆地英西地区为例. 中国矿业大学学报, 2017, 46(5):909-922. HUANG C C, WANG J G, WU L R, et al. Characteristics of Paleogene lacustrine carbonate reservoirs and oil-bearing property analysis:A case study of the Yingxi area of western Qaidam Basin. Journal of China University of Mining & Technology, 2017, 46(5):909-922.
[21] 田光荣, 王建功, 孙秀建, 等. 柴达木盆地阿尔金山前带侏罗系含油气系统成藏差异性及其主控因素. 岩性油气藏, 2021, 33(1):131-144. TIAN G R, WANG J G, SUN X J, et al. Hydrocarbon accumulation differences and main controlling factors of Jurassic petroleum system in Altun piedmont of Qaidam Basin. Lithologic Reservoirs, 2021, 33(1):131-144.
[22] 张斌, 何媛媛, 陈琰, 等.柴达木盆地西部咸化湖相优质烃源岩形成机理. 石油学报, 2018, 39(6):674-685. ZHANG B, HE Y Y, CHEN Y, et al. Formation mechanism of excellent saline lacustrine source rocks in western Qaidam Basin. Acta Petrolei Sinica, 2018, 39(6):674-685.
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