Application of C5-C7 Light Hydrocarbons in Geochemical Studies:A Case Study of Ordovician Crude Oils from the Halahatang Depression,Tabei Uplift

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  • 1.State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum, Beijing 102249, China;2.Shandong University of Science and Technology, Qingdao 266510, China

Received date: 2012-06-07

  Revised date: 2012-07-27

  Online published: 2013-04-10

Abstract

Based on the analyses of C5-C7 light hydrocarbons,geochemical studies including oil maturity,source rocks organic-matter types and hydrocarbon-generating temperature are carried out.The heptane and isoheptane values can be used to distinguish oils and source rock organic-matter types.These two values of the Ordovician crude oils from the Halahatang depression range from 31.0 to 38.3 and 1.0 to 2.5,with the average of 36.0 and 2.2,respectively.And according to both parameters,the samples are highly mature and the source rocks organic-matter type is type Ⅰ-Ⅱ.The composition characteristics of  C5-C7  light hydrocarbons are usually used to determine the source rock organic-matter types.In oil samples,the C5-C7  light hydrocarbon fraction is dominated by normal alkanes,while the C7 light hydrocarbons is dominated by isoalkanes.It is estimated that the source rock is dominated by sapropelic organic-matter.The Mango light hydrocarbon parameters including the K1,K2 values and RP are widely used to estimate the source rock organic-matter types and calculate the hydrocarbon-generating temperature.The K1 values for the oil samples range from 0.97 to 1.07 with an average of 1.03 and the K2 values range from 0.18 to 0.22 with an average of 0.20.The oil samples possess 3RP and 6RP,hence,it is concluded that the source rock is dominated by sapropelic organic-matter,which is the same to the result conducted from the  C5-C7  and C7 light hydrocarbons composition characteristics.Besides,the hydrocarbon-generating temperature ranges from 119.0℃ to 125.9℃. 

Cite this article

CHENG Bin, WANG Tie-guan, CHANG Xiang-chun . Application of C5-C7 Light Hydrocarbons in Geochemical Studies:A Case Study of Ordovician Crude Oils from the Halahatang Depression,Tabei Uplift[J]. Natural Gas Geoscience, 2013 , 24(2) : 398 -405 . DOI: 10.11764/j.issn.1672-1926.2013.02.398

References

[1]Thompson K F M.Light hydrocarbons in subsurface sediments[J].Geochim Cosmochim Acta,1979,43:657-672.

[2]Thompson K F M.Classification and thermal history of petroleum based on light hydrocarbons[J].Geochim Cosmochim Acta,1983,47:303-316.

[3]Cheng Keming,Jin Weiming,He Zhonghua,et al.Composition characteristics of light hydrocarbons in continental oil and condensate and their geological significance[J].Petroleum Exploration and Development,1987,14(1):34-43.[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.][4]Lin Renzi,Zhang Min,Xu Zhongyi.Geochemistry characteristics of light hydrocarbons (C1-C7) in light oils[J].Journal of Jianghan Petroleum Institute,1989,1(11):10-16.[林壬子,张敏,徐中一.轻质油C1-C7轻烃的地球化学特征[J].江汉石油学院院报,1989,1(11):10-16.]

[5]Zhu Junzhang,Bao Jianping,Wang Peirong.Classification on light hydrocarbons and origin of crude oils in Tarim basin[J].Marine Origin Petroleum Geology,2001,6(1):36-39.[朱俊章,包建平,王培荣.塔里木盆地原油的轻烃分类及成因研究[J].海相油气地质,2001,6(1):36-39.]

[6]Wang Xiang,Zhang Min,Huang Guanghui,et al.Compositions and geochemical characteristics of light hydrocarbons in typical marine oils and typical coal-formed oils[J].Natural Gas Geoscience,2008,19(1):18-22.[王祥,张敏,黄光辉.典型海相油和典型煤成油轻烃组成特征及地球化学意义[J].天然气地球科学,2008,19(1):18-22.]

[7]Gao Lili,Zhang Min,Zhao Hongjing.Geochemical characteristics of light hydrocarbon in nature gas from Lishu fault depression in Songliao basin[J].Natural Gas Geoscience,2011,22(4):709-714.[高丽丽,张敏,赵红静.松辽盆地南部梨树断陷天然气轻烃地球化学研究[J].天然气地球科学,2011,22(4):709-714.]

[8]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.[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.]

[9]Mango F D.An invariance in the isoheptanes of petroleum[J].Science,1987,237:514-517.

[10]Mango F D.The origin of light cycloalkanes in petroleum[J].Geochim Cosmochim Acta,1990,54(54):23-27.

[11]Mango F D.The origin of light cycloalkanes in petroleum:A kinetic test of steady state catalytic hypothesis[J].Geochim Cosmochim Acta,1990,54:1315-1323.

[12]Mango F D.The stability of hydrocarbons under time-temperature conditions of petroleum genesis[J].Nature,1991,352:146-148.

[13]Mango F D.Transition metal catalysis in the generation of petroleum and nature gas[J].Geochimica et Cosmochimica Acta,1992,56:553-555.

[14]Mango F D.The origin of light cycloalkanes in petroleum:Ring preference in the closure of carbocyclic rings[J].Geochim Cosmochim Acta,1994,58:895-901.

[15]Mango F D.Transition metal catalysis in the generation of nature gas[J].Organic Geochemistry,1996,24:977-984.

[16]Ten Haven H L.Applications and limitations of Mango′s light hydrocarbon parameters in petroleum correlation studies[J].Organic Geochemistry,1996,24:957-976.

[17]Zhang Min,Zhang Jun.Development and application of Mango′s light hydrocarbon parameters[J].Petroleum Exploration and Development,1998,25(6):26-28.[张敏,张俊.Mango轻烃参数的开发与应用[J].石油勘探与开发,1998,25(6):26-28.]

[18]Zhu Yangming,Zhang Chunming.Applications of Mango′s light hydrocarbon parameters in classification of oils from Tarim basin[J].Geochimica,1999,28(1):26-33.[朱扬明,张春明.Mango轻烃参数在塔里木原油分类中的应用[J],地球化学,1999,28(1):26-33.]

[19]Zhang Min,Zhang Jun.Geochemical Characteristics of crude oils for different Mango′s light hydrocarbon parameters in Tazhong region[J].Fault-Block Oil & Gas Filed,2000,7(1):14-18.[张敏,张俊.塔中地区不同Mango轻烃参数原油的地球化学特征[J].断块油气田,2000,7(1):14-18.]

[20]Wang Peirong,Zhang Dajiang,Xiao Tingrong,et al.Geochemical characteristics of the light hydrocarbons in Jianghan basin,China[J].Petroleum Exploration and Development,2005,32(3):45-47.[王培荣,张大江,肖廷荣,等.江汉盆地原油轻烃的地球化学特征[J].石油勘探与开发,2005,32(3):45-47.]

[21]Zhang Chunming.The origin and application of light hydrocarbons in petroleum[J].Journal of Oil and Gas Technology,2005,27(2):146-148.[张春明.石油中轻烃的成因及其应用[J].石油天然气学报,2005,27(2):146-148.]

[22]Tang Youjun,Wen Zhigang.Geochemical characteristics of light hydrocarbons for crude oils from rift basin in Sudan[J].Natural Gas Geoscience,2007,18(5):756-759.[唐友军,文志刚.苏丹裂谷盆地原油轻烃地球化学特征[J].天然气地球科学,2007,18(5):756-759.]

[23]Chang Xiangchun,Wang Tieguan,Li Qiming,et al.Maturity assessment of severely biodegraded marine oils from Halahatang depression in Tarim basin[J].Energy Exploration & Exploitation,2012,30(3):331-350.

[24]Zhu Guangyou,Yang Haijun,Zhu Yongfeng,et al.Study on petroleum geological characteristics and accumulation of carbonate reservoirs in Hanilcatam area,Tarim basin[J].Acta Petrologica Sinica,2011,27(3):827-844.[朱光有,杨海军,朱永峰,等.塔里木盆地哈拉哈塘地区碳酸盐岩油气地质特征与富集成藏研究[J].岩石学报,2011,27(3):827-844.]

[25]Leythauser D,Schaefer R G,Weiner B.Generation of low molecular weight hydrocarbons from organic matter in source beds as a function of temperature[J].Chemical Geology,1979,25:95-108.

[26]Snowdon L R.Immature oil and condensate-modification of hydrocarbon generation model for terrestrial organic matter[J].AAPG Bulletin,1982,66(6):775-788.

[27]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):378-379.[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利用[J].石油实验地质,1990,12(4):378-379.]

[28]Lou Guoquan,Bao Jianping,Zhu Cuishan.Geochemical characteristics of light hydrocarbons in crude oils from No.1 area of central Junggar basin[J].Natural Gas Geoscience,2012,23(3):550-555.[娄国泉,包建平,朱翠山.准噶尔盆地中部1区块原油轻烃地球化学特征[J].天然气地球科学,2012,23(3):550-555.]

[29]Zhang Min,Zhang Jun,Zhang Chunming.Geochemical characteristics of light hydrocarbons for crude oils in Tarim basin[J].Geochimica,1999,28(2):191-196.[张敏,张俊,张春明.塔里木盆地原油轻烃地球化学特征[J].地球化学,1999,28(2):191-196.]

[30]Zhu Yangming.Novel theory and applications of steady-state catalysis of light hydrocarbons[J].Petroleum Explorationist,1998,3(3):5-9.[朱扬明.稳态催化轻烃成因理论及应用前景[J].勘探家,1998,3(3):5-9.]

[31]Zhu Yangming.Calculation of hydrocarbon-generating temperature and its application to exploration[J].Experimental Petroleum Geology,2000,22(2):167-171.[朱扬明.油气生成温度计算及其在勘探中的应用[J].石油实验地质,2000,22(2):167-171.]

[32]Bement W O,Levey R A,Mango F D.The temperature of oil generation as defined with C7 chemistry maturity parameter (2,4-DMP/2,3-DMP ratio)[C]//Grimalt J O,Dorronsoro C eds.Organic Geochemistry:Developments and Appllications in Energy,Climate,Envelopments and Human History,Donostia-San Sebastian,Spain:AIGOA,1995:505-507.

[33]Mango F D.The light hydrocarbons in petroleum:a critical review[J].Organic Geochemistry,1997,26:417-440.

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