天然气地球化学

准噶尔盆地玛湖凹陷北部—乌夏断裂带天然气成因与来源

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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.新疆油田分公司实验检测研究院,新疆 克拉玛依 834000;
    3.新疆油田分公司勘探开发研究院,新疆 克拉玛依 834000
高岗(1966-),男,陕西高陵人,副教授,博士,主要从事油气勘探与开发研究与教学工作. E-mail:gaogang2819@sina.com.

收稿日期: 2015-05-25

  修回日期: 2015-07-28

  网络出版日期: 2019-09-20

基金资助

国家科技重大专项项目“岩性地层油气藏成藏规律、关键技术及目标评价”(编号:2011ZX05001)下属课题“准噶尔盆地岩性地层油气藏富集规律与目标评价”(编号:2011ZX05001-006);中国石油第四次油气资源评价项目(编号:2013E)下属课题“准噶尔盆地及外围第四次油气资源评价”(编号:2013E-050206)联合资助.

Origin and source of natural gas from Wuxia Fault Belt in the northern Mahu Sag,Junggar Basin

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  • 1.The State Key Laboratory of Petroleum Resources and Prospecting,China University of Petroleum (Beijing), Beijing 102249,China;2.Experimental Testing Institute,Xinjiang Oilfield Company,Karamay 834000,China;
    3.Exploration & Development Institute,Xinjiang Oil Field Company,Karamay 834000,China

Received date: 2015-05-25

  Revised date: 2015-07-28

  Online published: 2019-09-20

摘要

针对准噶尔盆地目前勘探程度相对较高的玛湖凹陷北部—乌夏断裂带天然气特征变化较为复杂的实际,通过天然气赋存特征、天然气与相关烃源岩有机地球化学特征的详细分析,对天然气的成因与来源进行了系统的研究。研究发现,该区已有的天然气主要为原油溶解气,少量气层气主要分布在乌夏断裂带的中生界,为原油溶解气溢出而形成的浅层气。天然气以烃类化合物为主要组分,二氧化碳与氮气等非烃含量相对较低。天然气干燥系数介于0.66~0.99之间,主要为湿气,少数干气主要分布在较浅的部位,是运移分异作用较强、保存条件较好的结果。天然气成因类型主要为腐泥型和偏腐泥型的过渡型,未见腐殖型天然气。气源分析表明天然气主要来自风城组湖相腐泥型—混合型母质的烃源岩,乌尔禾组腐殖型母质烃源岩有少量贡献,佳木河组腐殖型母质烃源岩对玛湖凹陷北部斜坡区断裂发育部位的局部天然气有贡献。

本文引用格式

高岗, 向宝力, 任江玲, 张维维, 马万云, 何文军 . 准噶尔盆地玛湖凹陷北部—乌夏断裂带天然气成因与来源[J]. 天然气地球科学, 2016 , 27(4) : 672 -680 . DOI: 10.11764/j.issn.1672-1926.2016.04.0672

Abstract

There is higher exploration degree and complicated natural gas composition in Wuxia Fault Belt and the west slope region of Mahu Sag in the Junngar Basin at present.Based on the analyses of characteristics of occurrence,and organic geochemistry of natural gases and source rocks,the authors systematically investigated the origin and source of natural gases.The natural gas which has been discovered substantially belongs to dissolved gas in crude oil,while a minor amount of gas-layer gas mainly distributes in the Mesozoic of Wuxia Fault Belt,belonging to shallow gas-layer gas resulted from ex-solution of gas which was previously dissolved in crude oil.Natural gas was dominated by alkane gas with a relatively low amount of carbon dioxide,nitrogen and other non-hydrocarbon compounds.The gas dryness coefficient ranges between 0.66 and 0.99,and mainly belongs to wet gas,while minor dry gas distributes in shallower part as a consequence of stronger migration differentiation.The natural gas is mainly of sapropelic and mixed origin which is approaching to sapropelic.Gas of humic origin is rarely found.The analytical results of gas-source indicate that the gas is mainly derived from Fengcheng Formation lacustrine source rock with sapropelic-mixed precursors.The contribution of the Wu'erhe Formation source rock with humic precursors is small,and the Jiamuhe Formation source rock with humic precursors has contribution to local gas accumulation in the slope region with developed faults.

参考文献

[1]Feng Chong,Yao Aiguo,Wang Jianfu,et al.Abnormal pressure distribution and formation mechanism in Mahu Sag,Junggar Basin[J].Xinjiang Petroleum Geology,2014,35(6):640-645.[冯冲,姚爱国,汪建富,等.准噶尔盆地玛湖凹陷异常高压分布和形成机理[J].新疆石油地质,2014,35(6):640-645.]
[2]Lei Dewen,Abulimiti,Tang Yong,et al.Controlling factors and occurrence prediction of high oil-gas production zones in Lower Triassic Baikouquan Formation of Mahu Sag in Junggar Basin[J].Xinjiang Petroleum Geology,2014,35(5):495-499.[雷德文,阿布力米提,唐勇,等.准噶尔盆地玛湖凹陷百口泉组油气高产区控制因素与分布预测[J].新疆石油地质,2014,35(5):495-499.]
[3]Jin Jun,Zhang Chaojun,Liu Luofu,et al.Structure & sedimentary environment and hydrocarbon potential of Carboniferous,Junggar Basin[J].Xinjiang Petroleum Geology,2009,30(2):211-214.[靳军,张朝军,刘洛夫,等.准噶尔盆地石炭系构造沉积环境与生烃潜力[J].新疆石油地质,2009,30(2):211-214.]
[4]Wang Xulong.The oil generation issue of Carboniferous,Junggar Basin[J].Xinjiang Petroleum Geology,1996,17(3):230-235.[王绪龙.准噶尔盆地石炭系的生油问题[J].新疆石油地质,1996,17(3):230-235.]
[5]Shi Xin,Wang Xulong,Zhang Xia,et al.Distribution and geochemistry characteristics of Carboniferous source rock in Junggar Basin[J].China Petroleum Exploration,2005,10(1):34-39.[石昕,王绪龙,张霞,等.准噶尔盆地石炭系烃源岩分布及地球化学特征[J].中国石油勘探,2005,10(1):34-39.]
[6]Wang Xulong,Kang Sufang.Analysis of crude origin in hinterland and slope of northwestern Margin,Junggar Basin[J].Xinjiang Petroleum Geology,1999,20(2):1-7.[王绪龙,康素芳.准噶尔盆地腹部及西北缘斜坡区原油成因分析[J].新疆石油地质,1999,20(2):1-7.]
[7]Zhang Liping,Wang Shejiao,Qu Hui.Geochemistry of crude oil and oil-source analysis of Junggar Basin[J].China Petroleum Exploration,2000,5(3):30-35.[张立平,王社教,瞿辉.准噶尔盆地原油地球化学特征与油源讨论[J].中国石油勘探,2000,5(3):30-35.]
[8]Wang Xulong,Kang Sufang.On the oil source of the Mabei Oilfield,northwest Junggar Basin[J].Journal of Southwest Petroleum Institute,2001,23(6):6-9.[王绪龙,康素芳.准噶尔盆地西北缘玛北油田油源分析[J].西南石油学院学报,2001,23(6):6-9.]
[9]Chen Jianping,Zha Ming,Wang Peng,et al.A study of migration and accumulation of oil and gas in Xiazijie area of northern-western parts of Zhungaer Basin[J].Marine Petroleum,2001,(2):31-35.[陈建平,查明,王鹏,等.准噶尔盆地西北缘夏子街地区油气成藏研究[J].海洋石油,2001,(2):31-35.]
[10]Liu Wenhui,Xu Yongchang.Bio-thermocatalytic transitional zone gases[J].Petroleum Exploration and Development,2005,32(4):30-36.[刘文汇,徐永昌.论生物—热催化过渡带气[J].石油勘探与开发,2005,32(4):30-36.]
[11]Guo Jianying,Zhong Ningning,Li Jian.Characteristics of carbon and hydrogen isotopes and genetic type of hydrocarbon gases in Qikou Sag[J].Natural Gas Geoscience,2011,22(6):1054-1061.[国建英,钟宁宁,李剑.歧口凹陷烷烃气碳、氢同位素特征及成因类型[J].天然气地球科学,2011,22(6):1054-1061.]
[12]Liu Quanyou,Jin Zhijun,Zhang Dianwei,et al.Geochemical characteristics and genesis o1 natural gas in Tarim Basin[J].Natural Gas Geoscience,2008,19(2):234-237.[刘全有,金之钧,张殿伟,等.塔里木盆地天然气地球化学特征与成因类型研究[J].天然气地球科学,2008,19(2):234-237.]
[13]Dai Jinxing.Natural gas hydrogen and carbon isotope characteristic and identification of all kinds of natural gas[J].Natural Gas Geoscience,1993,2(3):1-40.[戴金星.天然气碳氢同位素特征和各类天然气鉴别[J].天然气地球科学,1993,2(3):1-40.]
[14]Xu Yongchang,Liu Wenhui,Shen Ping.Areview of isotope geochemical researches on oil and gas in oil and gas bearing basins[J].Acta Sedimentologica Sinica,2001,19(2):161-168.[徐永昌,刘文汇,沈平.含油气盆地油气同位素地球化学研究概述[J].沉积学报,2001,19(2):161-168.]
[15]Song Yan,Xu Yongchang.Origin and identification of natural gases[J].Petroleum Exploration and Development,2005,3(4):24-29.[宋岩,徐永昌.天然气成因类型及其鉴别[J].石油勘探与开发,2005,3(4):24-29.]
[16]Shen Baojian,Huang Zhilong,Liu Hongwen,et al.Advancesin research methods of gas source correlation[J].Natural Gas Geoscience,2007,18(2):269-274.[申宝剑,黄智龙,刘洪文,等.天然气气源对比研究方法进展[J].天然气地球科学,2007,18(2):269-274.]

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