C<sub>4</sub>-C<sub>8</sub>轻烃在原油地球化学研究中的应用——以塔里木盆地大宛齐油田凝析油为例

孔婷; 张敏

doi:10.11781/sysydz201704535

C₄-C₈轻烃在原油地球化学研究中的应用——以塔里木盆地大宛齐油田凝析油为例

doi: 10.11781/sysydz201704535

孔婷^1,2,
张敏^1,2, ,

1.
长江大学油气资源与勘查技术教育部重点实验室, 武汉 430100
2. 长江大学资源与环境学院, 武汉 430100

基金项目: 国家自然科学基金“地质体中高丰度重排藿烷类化合物的成因机制与石油地质意义”（41272170）资助。

详细信息

作者简介:
孔婷(1992—),女,硕士研究生,矿产普查与勘探专业。E-mail:kt515893413@163.com。

通讯作者:
张敏(1962—),男,教授,博士生导师,从事有机地球化学与石油地质学研究与教学。E-mail:zmjpu@163.com。

中图分类号: TE122.1
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出版历程
- 收稿日期: 2016-11-22
- 修回日期: 2017-05-10
- 刊出日期: 2017-07-28

Application of C₄-C₈ light hydrocarbons in geochemical studies: A case of condensates in Dawanqi oil field, Tarim Basin

Kong Ting^1,2,
Zhang Min^{1,2
, ,}

1.
Key Laboratory of Exploration Technology for Oil and Gas Research of Ministry of Education, Yangtze University, Wuhan, Hubei 430100, China
2. College of Resources and Environment, Yangtze University, Wuhan, Hubei 430100, China

摘要

摘要: 全油样品的GC分析表明，塔里木盆地大宛齐油田不同层位的81个原油样品富含轻烃组分，且部分样品遭受了不同程度的微生物降解。以C₄-C₈轻烃地球化学参数为工具，对原油成熟度和次生蚀变等方面进行地球化学研究。轻烃成熟度参数表明，原油的折算R_c在0.9%左右，处于成熟阶段。对遭受生物降解作用的原油分析发现，随着生物降解作用的增强，其Mango轻烃参数K₁值减小，K₂值明显增大，甲基环己烷指数增大，甲基环戊烷较乙基环戊烷更容易遭受生物降解，表明单烷基环戊烷中烷基取代基越大的烃类越难遭受生物降解作用。结合轻烃参数指示的原油成熟度和母质来源，推测研究区原油为次生凝析油。通过轻烃参数对比研究发现，大宛齐油田凝析油轻烃参数特征与大北和其南部地区正常原油相似。依据塔里木盆地大宛齐油田的地质背景和原油成藏模式可知，研究区原油是大北和南部地区两类原油通过深大断裂运移到大宛齐浅部，通过蒸发分馏作用聚集成藏。
- 轻烃 /
- 次生凝析油 /
- 地球化学研究 /
- 蒸发分馏作用 /
- 大宛齐油田 /
- 塔里木盆地
Abstract: The GC analysis of whole oil samples demonstrates that a suite of 81 crude oils from different production wells and reservoir horizons derived from the Dawanqi oil field contain a high abundance of light hydrocarbon, and partial oils were biodegraded to different degrees. C₄-C₈ light hydrocarbons were chosen for geochemical studies including oil maturity and secondary alteration. The maturity parameters of light hydrocarbons indicate that the calculated reflectance of oils was about 0.9%, suggesting condensates in the mature stage. For biodegraded oils, with biodegradation increasing, Mango's light hydrocarbon parameters K₁ values reduce and K₂values increase remarkably. Furthermore, MCH index also increases. Methylcyclopentanes are depleted faster than ethylcyclopentanes, implying that there is a trend of lower susceptibility to biodegradation with greater alkyl substitution. Combined with maturity and organic matter input, it is speculated that oils in the Dawanqi oil field are secondary condensates. The comparison of light hydrocarbon parameters indicates that condensates in the Dawanqi oil field are consistent with crude oils from the Dabei oil field and the southern area of Dawanqi oil field. Based on the geological background of the Dawanqi oil field in Tarim Basin and the condensate accumulation pattern, it indicates that crude oils from the Dabei oil field and the southern area moved to the Dawanqi oil field through deep faults and underwent evaporative fractionation.
- light hydrocarbon /
- secondary condensates /
- geochemical studies /
- evaporation fractionation /
- Dawanqi oil field /
- Tarim Basin

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参考文献(40)

[1]	Schaefer R G,Leythaeuser D.Analysis of trace amounts of hydrocarbons (C₂-C₈) from rock and crude oil samples and its application in petroleum geochemistry[J].Physics & Chemistry of the Earth,1980,12:149-156.
[2]	Snowdon L R,Powell T G.Immature oil and condensate; modification of hydrocarbon generation model for terrestrial organic matter[J].AAPG Bulletin,1982,66(6):755-788.
[3]	Mango F D.An invariance in the isoheptanes of petroleum[J].Science,1987,237(4814):514-517.
[4]	Thompson K F M.Light hydrocarbons in subsurface sediments[J].Geochimica et Cosmochimica Acta,1979,43(5):657-672.
[5]	戴金星.利用轻烃鉴别煤成气和油型气[J].石油勘探与开发,1993,20(5):26-32. Dai Jinxing.Identification of coal formed gas and oil type gas by light hydrocarbons[J].Petroleum Exploration and Development,1993,20(5):26-32.
[6]	程克明,金伟明,何忠华,等.陆相原油及凝析油的轻烃单体组成特征及地质意义[J].石油勘探与开发,1987,14(1):34-43. Cheng Keming,Jin Weiming,He Zhonghua,et al.Composition charac-teristics of light hydrocarbons in continental oil and condensate and their geological significance[J].Petroleum Exploration and Deve-lopment,1987,14(1):34-43.
[7]	Mango F D.The light hydrocarbons in petroleum:A critical review[J].Organic Geochemistry,1997,26(7/8):417-440.
[8]	蒋启贵,张彩明,张美珍,等.岩石C₆—C₁₅轻烃定量分析方法研究[J].石油实验地质,2007,29(5):512-515. Jiang Qigui,Zhang Caiming,Zhang Meizhen,et al.Research on the quantitative analysis method of C₆-C₁₅ light hydrocarbon in source rock samples[J].Petroleum Geology & Experiment,2007,29(5):512-515.
[9]	Tissot B P,Welte D H.Petroleum formation and occurrence[M].Berlin Heidelberg:Springer-Verlag,1978:129-131.
[10]	Peters K E,Walters C C,Moldowan J M.The biomarker guide (volume 1).Biomarkers and isotopes in the environment and human history[M].2nd ed.Cambridge:Cambridge University Press,2007:490.
[11]	George S C,Boreham C J,Minifie S A,et al.The effect of minor to moderate biodegradation on C₅ to C₉ hydrocarbons in crude oils[J].Organic Geochemistry,2002,33(12):1293-1317.
[12]	卢松年,张刚.一种新的凝析油形成模式[J].中国科学(B辑),1994,24(1):81-86. Lu Songnian,Zhang Gang.A new genesis mode of condensate[J].Science in China (Series B),1994,24(1):81-86.
[13]	马柯阳.凝析油形成新模式:原油蒸发分馏机制研究[J].地球科学进展,1995,10(6):567-571. Ma Keyang.Study on petroleum evaporative fractionation:A new mechanism for the generation of condensate[J].Advance in Earth Sciences,1995,10(6):567-571.
[14]	傅宁,李友川,陈桂华,等.东海西湖凹陷油气"蒸发分馏"成藏机制[J].石油勘探与开发,2003,30(2):39-42. Fu Ning,Li Youchuan,Chen Guihua,et al.Pooling mechanisms of "evaporating fractionation" of oil and gas in the Xihu Depression,East China Sea[J].Petroleum Exploration and Development,2003,30(2):39-42.
[15]	纪红,黄光辉,成定树.大宛齐油田原油轻烃地球化学研究[J].石油天然气学报,2014,36(2):23-26. Ji Hong,Huang Guanghui,Cheng Dingshu.Geochemical charac-teristics of light hydrocarbons in Dawanqi oilfield[J].Journal of Oil and Gas Technology,2014,36(2):23-26.
[16]	杨禄,张春明,李美俊,等.Mango轻烃参数在塔里木盆地大宛齐油田中的应用[J].天然气地球科学,2016,27(8):1524-1531. Yang Lu,Zhang Chunming,Li Meijun,et al.Application of Mango's light hydrocarbon parameters in Dawanqi oilfield,Tarim Basin,China[J].Natural Gas Geoscience,2016,27(8):1524-1531.
[17]	杨禄,李美俊,张春明.生物降解作用对大宛齐油田库车组原油轻烃参数的影响[J].高校地质学报,2016,22(3):549-554. Yang Lu,Li Meijun,Zhang Chunming.Influence of biodegradation on light hydrocarbon parameters in crude oil of Kuqa Formation from Dawanqi oilfield[J].Geological Journal of China Universities,2016,22(3):549-554.
[18]	杨禄,张春明,李美俊,等.轻度微生物降解作用对原油中C₇轻烃的影响:以大宛齐油田为例[J].地球化学,2015,44(5):485-492. Yang Lu,Zhang Chunming,Li Meijun,et al.Influence of slight biodegradation on C₇ hydrocarbons in crude oils:A case study of Dawanqi oilfield in Tarim Basin[J].Geochimica,2015,44(5):485-492.
[19]	Yang Lu,Zhang Chunming,Li Meijun,et al.The effect of slight to minor biodegradation on C₆ to C₇ light hydrocarbons in crude oils:A case study from Dawanqi oilfield in the Tarim Basin,NW China[J].Acta Geochimica,2016,35(2):203-214.
[20]	卢双舫,张敏.油气地球化学[M].北京:石油工业出版社,2008. Lu Shuangfang,Zhang Min.Oil and gas geochemistry[M].Beijing:Petroleum Industry Press,2008.
[21]	Thompson K F M.Classification and thermal history of petroleum based on light hydrocarbons[J].Geochimica et Cosmochimica Acta,1983,47(2):303-316.
[22]	王培荣,徐冠军,张大江,等.常用轻烃参数正、异庚烷值应用中的问题[J].石油勘探与开发,2010,37(1):121-128. Wang Peirong,Xu Guanjun,Zhang Dajiang,et al.Problems with application of heptane and isoheptane values as light hydrocarbon parameters[J].Petroleum Exploration and Development,2010,37(1):121-128.
[23]	Mango F D.The origin of light hydrocarbons in petroleum:Ring preference in the closure of carbocyclic rings[J].Geochimica et Cosmochimica Acta,1994,58(2):895-901.
[24]	Bement W O,Levey R A,Mango F D.The temperature of oil generation as defined with C₇ chemistry maturity parameter (2,4-DMP/2,3-DMP)[M].Donostian-San Sebastian:European Association of Organic Geochemists,1995:505-507.
[25]	黄第藩,李晋超,张大江,等.柴达木盆地第三系原油的熟化序列及其在石油资源预测中的重要意义[J].石油学报,1989,10(3):1-11. Huang Difan,Li Jinchao,Zhang Dajiang,et al.The maturation series of Tertiary crude oil from Qaidam Basin and its significance in forecasting petroleum resources[J].Acta Petrolei Sinica,1989,10(3):1-11.
[26]	Mango F D.The origin of light hydrocarbons in petroleum:A kinetic test of the steady-state catalytic hypothesis[J].Geochimica et Cosmochimica Acta,1990,54(5):1315-1323.
[27]	胡惕麟,戈葆雄,张义纲,等.源岩吸附烃和天然气轻烃指纹参数的开发和应用[J].石油实验地质,1990,12(4):375-394. Hu Tilin,Ge Baoxiong,Zhang Yigang,et al.The development and application of fingerprint parameters for hydrocarbons absorbed by source rocks and light hydrocarbons in natural gas[J].Experimental Petroleum Geology,1990,12(4):375-394.
[28]	Curiale J A,Bromley B W.Migration induced compositional changes in oils and condensates of a single field[J].Organic Geochemistry,1996,24(12):1097-1113.
[29]	Dzou L I P,Hughes W B.Geochemistry of oils and condensates,K field,offshore Taiwan:A case study in migration fractionation[J].Organic Geochemistry,1993,20(4):437-462.
[30]	Thompson K F M.Gas-condensate migration and oil fractionation in deltaic systems[J].Marine and Petroleum Geology,1988,5(3):237-246.
[31]	Thompson K F M.Fractionated aromatic petroleums and the gene-ration of gas-condensates[J].Organic Geochemistry,1987,11(6):573-590.
[32]	张水昌.运移分馏作用:凝析油和蜡质油形成的一种重要机制[J].科学通报,2000,45(6):667-670. Zhang Shuichang.The migration fractionation:An important mechanism in the formation of condensate and waxy oil[J].Chinese Science Bulletin,2000,45(14):1341-1344.
[33]	何文祥,王培荣,潘贤庄,等.莺—琼盆地原油的蒸发分馏作用[J].石油勘探与开发,2004,31(4):52-54. He Wenxiang,Wang Peirong,Pan Xianzhuang,et al.Evaporative fractionation of crude oils in the Ying-Qiong Basin[J].Petro-leum Exploration and Development,2004,31(4):52-54.
[34]	祁灵.库车坳陷原油中重排藿烷类化合物的组成特征与成因探讨[D].荆州:长江大学,2015. Qi Ling.Distribution characteristics and genesis of rearrangement hopane compounds in crude oil from Kuqa Depression[D].Jingzhou:Yangtze University,2015.
[35]	龚德瑜,于聪,杨曦,等.库车坳陷凝析油地球化学特征及其蒸发分馏机制[C]//第十四届全国有机地球化学学术会议论文集.珠海:中国地质学会,2013. Gong Deyu,Yu Cong,Yang Xi,et al.Geochemical characteristics and formation mechanism of condensates from Kuqa Depression[C]//The 13th National Meeting on Organic Geochemistry in China.Zhuhai:Geological Society of China,2013.
[36]	张敏.大宛齐油气运移方向研究[R].武汉:长江大学,2009. Zhang Min.The study of migration direction of hydrocarbon from Dawanqi oilfield[R].Wuhan:Yangtze University,2009.
[37]	肖中尧,黄光辉,卢玉红,等.库车坳陷却勒1井原油的重排藿烷系列及油源对比[J].石油勘探与开发,2004,31(2):35-37. Xiao Zhongyao,Huang Guanghui,Lu Yuhong,et al.Rearranged hopanes in oils from the Quele 1 well,Tarim Basin,and the significance for oil correlation[J].Petroleum Exploration and Development,2004,31(2):35-37.
[38]	詹兆文,包建平,朱翠山,等.库车坳陷却勒1油藏原油地球化学特征与来源研究[J].石油天然气学报(江汉石油学院学报),2011,33(5):22-26. Zhan Zhaowen,Bao Jianping,Zhu Cuishan,et al.Geochemical characteristics and origins of crude oil from Quele-1 reservoir in Kuqa Depression[J].Journal of Oil and Gas Technology (Journal of Jianghan Petroleum Institute),2011,33(5):22-26.
[39]	卓勤功,赵孟军,谢会文,等.库车前陆盆地大北地区储层沥青与油气运聚关系[J].石油实验地质,2011,33(2):193-196. Zhuo Qingong,Zhao Mengjun,Xie Huiwen,et al.Relationship between reservoir bitumen and hydrocarbon migration in Dabei region,Kuqa Foreland Basin[J].Petroleum Geology & Experiment,2011,33(2):193-196.
[40]	卓勤功,李勇,鲁雪松,等.克拉苏构造带凝析油特征及其对油气成藏的指示意义[J].天然气地球科学,2012,23(6):1097-1103. Zhuo Qingong,Li Yong,Lu Xuesong,et al.Condensate characteristics and its significance for hydrocarbon accumulation in the Kelasu structural belt[J].Natural Gas Geoscience,2012,23(6):1097-1103.