塔里木盆地塔中地区上奥陶统油气相态及其控制因素

陈君青, 庞雄奇, 姜振学, 庞宏,

doi:10.11764/j.issn.1672-1926.2014.12.1913

天然气地球科学 >

2014 , Vol. 25 >Issue 12: 1913 - 1924

DOI: https://doi.org/10.11764/j.issn.1672-1926.2014.12.1913

天然气地质学

塔里木盆地塔中地区上奥陶统油气相态及其控制因素

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1．中国石油大学(北京)油气资源与探测国家重点实验室，北京 102249； 2．中国石油大学(北京)盆地与油藏研究中心，北京 102249； 3．中国石油大学(北京)非常规天然气研究院，北京 102249

陈君青(1987-)，女，浙江金华人，博士研究生，主要从事油气成藏机理研究.E-mail：cjq7745@163.com.

收稿日期: 2014-02-12

修回日期: 2014-05-12

网络出版日期: 2019-09-18

基金资助

国家重点基础研究规划项目(编号：2011CB201100);中国博士后科学基金资助项目(编号：2013M530845)联合资助.

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Controlling Factors and Phase State of Hydrocarbons in the Upper Ordovician of the Tazhong Area,Tarim Basin

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(1.State Key Laboratory of Petroleum Resources and Prospecting,China University of Petroleum,Beijing 102249,China； 2.Basin and Reservoir Research Center,China University of Petroleum,Beijing 102249,China； 3.Unconventional Natural Gas Research Institute,China University of Petroleum,Beijing 102249,China)

Received date: 2014-02-12

Revised date: 2014-05-12

Online published: 2019-09-18

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摘要

在塔中地区上奥陶统已发现7个油气藏，油气相态分布复杂。结合油气藏形成与分布的地质和地球化学条件，综合分析了塔中地区油气相态的分布特征和主控因素。结果表明：塔中地区上奥陶统油气藏由西向东，从未饱和凝析气藏过渡为饱和凝析气藏|由北向南，从凝析气藏过渡为未饱和油藏。原油规则甾烷既有呈C₂₇≤C₂₈_{29的“反L型"的中—下寒武统烃源岩特征，又有呈C₂₇>C₂₈_{29“V”字型中—上奥陶统烃源岩特征，表明主要来自中—下寒武统和中—上奥陶统烃源岩的混源。天然气干燥系数和甲烷碳同位素表明目前正处于高成熟—过成熟阶段，与中—上奥陶统烃源岩处于成熟阶段不匹配，表明主要来自中—下寒武统。由于天然气甲烷碳同位素值普遍偏低，Ln(C₁/C₂)与Ln(C₂/C₃)两者大都呈正相关关系，天然气可能是以原油裂解气为主。油气相态分布主要受控于温度、压力、多期成藏和多期改造。早期温压较低.又经历了2次构造抬升，使得早期的油气藏遭到破坏，临界温度和压力发生改变,形成未饱和油藏。晚期地层埋深持续增大，形成高温高压，同时原油裂解成气对早期油藏气侵，形成未饱和凝析气藏。中—下寒武统优质储盖组合可能是塔中地区未来寻找天然气的重要领域。}}

关键词： 塔里木盆地; 塔中地区; 上奥陶统; 油气相态; 主控因素

本文引用格式

陈君青, 庞雄奇, 姜振学, 庞宏, . 塔里木盆地塔中地区上奥陶统油气相态及其控制因素[J]. 天然气地球科学, 2014 , 25(12) : 1913 -1924 . DOI: 10.11764/j.issn.1672-1926.2014.12.1913

Abstract

There have been seven hydrocarbon reservoirs discovered so far in the Upper Ordovician in Tazhong area,of which the hydrocarbon phase distribution is complicated.The distribution features and controlling factors of the hydrocarbon phase in the Tazhong area were investigated based on the geological and geochemical conditions for formulation and distribution of hydrocarbon reservoirs.The results indicated that hydrocarbon reservoir types in the Upper Ordovician of Tazhong area,from west to east,varied from unsaturated to saturated condensate gas reservoirs|and from north to south,changed from condensate gas reservoir to unsaturated oil reservoirs.The regular sterane of the crude oil is of both the “reverse-L type” C₂₇≤C₂₈_{29 which means from Lower-Middle Cambrian and the V-type regular sterane C₂₇>C₂₈_{29 which is from Middle-Upper Ordovician source rocks,so that the crude oil mainly came from the mixture of the Lower-Middle Cambrian and Middle-Upper Ordovician source rocks,while the drying coefficients and carbon isotopes suggested that the natural gas had entered the high to overmature stage of evolution,failing to match the mature stage of the Middle-Upper Ordovician source rock,showing that the natural gas mainly from the cracking gas of Lower-Middle Cambrian crude oil.The carbon isotopes of natural gas are mainly light,and the relationship between Ln(C₁/C₂) and Ln(C₂/C₃)exhibits a positive correlation,thus,the gas was considered to be crude oil cracking gas.The hydrocarbon phase distribution was mainly controlled by temperature,pressure,multiple periods of hydrocarbon accumulation and alteration.The temperature and pressure of the hydrocarbon reservoirs were low in early stage,then they underwent two periods of tectonic uplifts,which altered the critical temperature (Tc) and the critical condensate temperature (Tm) of the early reservoirs,forming unsaturated oil reservoirs.With the increase of burial depth in late stage,the temperature and pressure of reservoirs became high due to the oil-cracking gas flushing of the early oil,forming unsaturated condensate-gas reservoirs.The Lower-Middle Cambrian reservoir-cap assemblage of high quality may be an important target for the future exploration of natural gas in Tazhong area.}}

Key words： Tarim Basin; Tazhong area; Upper Ordovician; Hydrocarbon phase; Controlling factor

参考文献

［1］Van der Waals J D.On the Continuity of the Gas and Liquid State［D］.Leiden:Leiden University,1873:25-35.
［2］Tissot B P,Wehe D H.Petroleum Formation and Occurrence[M].New York,Heidelberg:Springer Verlag,1984:121-142.
［3］Yousef A,Hamid H,Richard A D.Tuning of Peng-Robinson equation of state for simulation of compositional change in flue gas injection processes[J].Fluid Phase Equilibria,1997,139(1/2):219-254.
［4］Zhou X,Wang H J,Chen Y C,et al.The study on the contributing factors of phase state of gas condensate:Examples from Tarim Basin[J].Marine and Petroleum Geology,1998,15:21-31.
［5］Liu D H,Xiao X M,Mi J K,et al.Determination of trapping pressure and temperature of petroleum inclusions using PVT simulation software:A case study of Lower Ordovician carbonates from the Lunnan low uplift,Tarim Basin[J].Marine and Petroleum Geology,2003,20:29-43.
［6］Georgios M K,Economou L G.Equations of state:From the ideas of van der Waals to association theories[J].The Journal of Supercritical Fluids,2010,55(2):421-437.
［7］Chen L,Zhu G Y,Zhang B,et al.Control factors and diversities of phase state of oil and gas pools in the Kuqa petroleum system[J].Acta Geologica Sinica,2012,86(2):484-496.
［8］Zhou Xinxi.The distribution and control factors of phase state of oil and gas pools in Kuqa petroleum system[J].Natural Gas Geoscience,2004,15(3):205-212.［周兴熙.库车油气系统油气藏相态分布及其控制因素[J].天然气地球科学,2004,15(3):205-212.］
［9］Zhang Haikun,Zhou Shixin,Fu Deliang,et al.Petroleum phase state prediction in deep reservoir of Tashen-1 well in Tarim Basin[J].Natural Gas Geoscience,2013,24(5):999-1004.［张海坤,周世新,付德亮,等.塔里木盆地塔深1井深层油气相态预测[J].天然气地球科学,2013,24(5):999-1004.］
［10］Danesh A.PVT and Phase Behaviour of Petroleum Reservoir Fluids［M］//Developments in Petroleum Science 47.Amsterdam:Elsevier Science,1998:3-15.
［11］Liu L F,Wang P,Li Y,et al.Paleozoic reservoir beds and their favorableness in Tazhong areas of Tarim Basin,Northwest China[J].Journal of Petroleum Science and Engineering,2009,68(1/2):1-18.
［12］Zhang Shuichang,Zhu Guangyou,Yang Haijun,et al.The phases of Ordovician hydrocarbon and their origin in the Tabei Uplift,Tarim Basin[J].Acta Petrologica Sinica,2011,27(8),2447-2460.［张水昌,朱光有,杨海军,等.塔里木盆地北部奥陶系油气相态及其成因分析[J].岩石学报,2011,27(8):2447-2460.］
［13］Pang H,Chen J Q,Pang X Q,et al.Estimation of the hydrocarbon loss through major tectonic events in the Tazhong area,Tarim Basin,west China[J].Marine and Petroleum Geology,2012,38(1):195-210.
［14］Pang Hong,Pang Xiongqi,Shi Xiuping,et al.The influence of adjustment and modification on hydrocarbon accumulation in Tazhong area[J].Journal of Southwest Petroleum University:Science & Technology Edition,2010,32(1),33-39.［庞宏,庞雄奇,石秀平,等.调整改造作用对塔中油气藏的影响[J].西南石油大学学报：自然科学版,2010,32(1):33-39.］
［15］Tian Y,Yang C P,Liao Z W,et al.Geochemical quantification of mixed marine oils from Tazhong area of Tarim Basin,NW China[J].Journal of Petroleum Science and Engineering,2012,90:96-106.
［16］Yang Debin,Zhu Guangyou,Liu Jiajun,et al.Distribution of global condensate gas field and major factors controlling its formation[J].Earth Science Frontiers,2010,17(1),339-349.［杨德彬,朱光有,刘家军,等.全球大型凝析气田的分布特征及其形成主控因素[J].地学前缘,2010,17(1):339-349.］
［17］Yang Haijun,Wu Guanghui,Han Jianfa,et al.Characteristics of hydrocarbon enrichment along the Ordovician carbonate platform margin in the central uplift of Tarim Basin[J].Acta Petrolei Scinica,2007,28(4):26-30.［杨海军,邬光辉,韩剑发,等.塔里木盆地中央隆起带奥陶系碳酸盐岩台缘带油气富集特征[J].石油学报,2007,28(4):26-30.］
［18］Li S M,Shi Q,Pang X Q,et al.Origin of the unusually high dibenzothiophene oils in Tazhong-4 Oilfield of Tarim Basin and its implication in deep petroleum exploration[J].Organic Geochemistry,2012,48:56-80.
［19］Cai C F,Hu W S,Worden R H.Thermochemical sulphate reduction in Cambro-Ordovician carbonates in central Tarim[J].Marine and Petroleum Geology,2001,18(6):729-741.
［20］Lv X X,Yang H J,Yang N,et al.Further recognition of petroleum exploration potential of marine carbonates in western Tarim Basin[J].Petroleum Science,2007,4(3):21-25
［21］Pang X Q,Yu Q H,Guan X Y,et al.Evolution and movement of source kitchens and their control of oil and gas in the Tarim cratonic basin,China[J].Energy Exploration & Exploitation,2012,30(2):239-272.
［22］Hanson A D,Zhang S C,Moldowan J M.Molecular organic geochemistry of the Tarim Basin,northwest China[J].AAPG Bulletin,2000,84(8):1109-1128.
［23］Zhang S C,Huang H P.Geochemistry of palaeozoic marine petroleum from the Tarim Basin,NW China:Part 1,Oil family classification[J].Organic Geochemistry,2005,36(8):1204-1214.
［24］Zhang S C,Su J,Wang X M,et al.Geochemistry of Palaeozoic marine petroleum from the Tarim Basin,NW China:Part 3,Thermal cracking of liquid hydrocarbon and gas washing as the major mechanism for deep gas condensate accumulations[J].Organic Geochemistry,2011,42(11):1394-1410.
［25］Li S M,Pang X Q,Jin Z J,et al.Petroleum source in the Tazhong uplift,Tarim Basin:New insights from geochemical and fluid inclusion data[J].Organic Geochemistry,2010,41:531-553.
［26］Dai Jinxing.The identification of all kinds alkane gas[J].Science in China:Series B,1992,22(2):185-193.［戴金星.各类烷烃气的鉴别[J].中国科学:B辑,1992,22(2):185-193.］
［27］Wang Feiyu,Zhang Shuichang,Zhang Baomin,et al.Maturity and its history of Cambrian marine source rocks in the Tarim Basin[J].Geochimica,2003,32(5):461-467.［王飞宇,张水昌,张宝民,等.塔里木盆地寒武系海相烃源岩有机成熟度及演化史[J].地球化学,2003,32(5):461-467.］
［28］Zhang Shuichang,Liang Digang,Zhang Baomin,et al.The Genesis of Marine Petroleum in Tarim Basin[M].Beijing:Petroleum Industry Press,2004:189-201.［张水昌,梁狄刚,张宝民,等.塔里木盆地海相油气的生成[M].北京：石油工业出版社,2004:189-201.］
［29］Liang Zeliang,Gang Wenzhe,Ye Zhixu.Hydrocarbon expulsion history of Middle-Upper Ordovician source rocks in Tarim Basin[J].Xinjiang Petroleum Geology,2008,29(1):53-56.［梁则亮,刚文哲,叶治续.塔里木盆地台盆区中上奥陶统烃源岩排烃史[J].新疆石油地质,2008,29(1):53-56.］
［30］Han Jianfa,Mei Lianfu,Yang Haijun,et al.Non-hydrocarbon origin of Ordovician natural gas in Tazhong of Tarim Basin and its implications for non-hydrocarbon accumulation[J].Earth Science Frontiers,2009,16(1):314-325.［韩剑发,梅廉夫,杨海军,等.塔里木盆地塔中奥陶系天然气的非烃成因及其成藏意义[J].地学前缘,2009,16(1):314-325.］
［31］Prinzhofer A,Huc A Y.Genetic and post-genetic molecular and isotopic fractionations in natural gases[J].Chemical Geology,1995,126:281-290.
［32］Li Xiaodi.Genetic types and accumulation model of condensate gas reservoir[J].Geological Review,1998,44(2):200-206.［李小地.凝析气藏的成因类型与成藏模式[J].地质评论,1998,44(2):200-206.］
［33］Wang Zongxian,Chen Zeliang,Yang Shuhe,et al.The application of liquid phase state study in the development of condensate gas reservoir[J].Natural Gas Geoscience,2005,16(5):662-665.［王宗贤,陈泽良,杨树合,等.流体相态研究在凝析气藏开发中的应用[J].天然气地球科学,2005,16(5):662-665.］
［34］Chen Zhiqiang,Sun Lei,Kang Zheng,et al.Condensate oil-gas mixtures phase behavior study with rich gaseous condensate water[J].Natural Gas Geoscience,2006,17(2):206-209.［常志强,孙雷,康征,等.富含凝析水的凝析油气体系相态研究[J].天然气地球科学,2006,17(2):206-209.］
［35］Pang Xiongqi.Hydrocarbon Expulsion Threshold Theory and Its′ Application[M].Beijing:Petroleum Industry Press,1993:1-60.［庞雄奇.含油气盆地地史、热史、生留排烃史数值模拟研究与烃源岩定量评价[M].北京：石油工业出版社,1993:1-60.］
［36］Pang Xiongqi,Gao Jianbo,Meng Qingyang.A discussion on the relationship between tectonization and hydrocarbon accumulation and dissipation in the platform-basin transitional area of the Tarim Basin[J].Oil & Gas Geology,2006,27(5):594-603.［庞雄奇,高剑波,孟庆洋.塔里木盆地台盆区构造变动与油气聚散关系[J].石油与天然气地质,2006,27(5):594-603.］
［37］Zhang Jun,Pang Xiongqi,Liu Luofu,et al.Distribution characteristics of Silurian asphalt sandstone and its significance in the Tarim Basin[J].Science in China:Serial D,2004,34(supplement 1),169-176.［张俊,庞雄奇,刘洛夫,等.塔里木盆地志留系沥青砂岩的分布特征与石油地质意义[J].中国科学：D辑,2004,34(增刊):169-176.］

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