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Article Navigation >  Acta Sedimentologica Sinica  > 2002  >  20(2): 345-348

LIU GuangDi, ZHANG ZhongPei, ZHANG ZhiHuan, CHEN WenXue, CHEN WenLi, LI YongLin. Analysis on the Formation Time of Fluid Inclusion in Sangonghe Formation of Jurassic in Yanqi Basin, Northwest China[J]. Acta Sedimentologica Sinica, 2002, 20(2): 345-348.
Citation: LIU GuangDi, ZHANG ZhongPei, ZHANG ZhiHuan, CHEN WenXue, CHEN WenLi, LI YongLin. Analysis on the Formation Time of Fluid Inclusion in Sangonghe Formation of Jurassic in Yanqi Basin, Northwest China[J]. Acta Sedimentologica Sinica, 2002, 20(2): 345-348.
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Analysis on the Formation Time of Fluid Inclusion in Sangonghe Formation of Jurassic in Yanqi Basin, Northwest China

  • 1.

    Key Laboratory of petroleum entrapment mechanisms of ministry education China, University of petroleum beijing 102249;

  • 2.

    instit ute of petroleum exploration and development of henan oil Field Company, China petrochemical Corp. Ltd Nanyang henan 473132

  • Received Date: 2001-06-22
  • Rev Recd Date: 2001-09-05
  • Publish Date: 2002-04-10
  • The fluid inclusions in Sangonghe Formation of Jurassic in Yanqi basin Northwest China were investigated. The fluid inclusions in Sangonghe Formation , which mostly occurred in the dissolution or pressure solution pores of quartz grains, were usually small in their size and low in their abundance. Up to 80% of organic inclusions existed in the state of liquid hydrocarbon phase, only some 20% of them in gaseous and gaseous-liquid hydrocarbon phases. In addition to organic inclusions, there were some saline-aqueous solution inclusions. Combined with the evolution history of the diagenesis and organic matter maturation, the fluid inclusions were mainly formed in the stage of late diagenesis in late Jurassic. The homogenization temperatures of inclusions fell in the temperature interval of 101～130℃, with ranges of 101～110℃ and of 121～130℃ as two peaks. According to the temperature history of Sangonghe Formation, the temperature of 101～110℃ was consistent with the temperature of Sangonghe Formation in late Jurassic and the peak of 121～130℃ with the temperature in the end of Jurassic when the formation reached its deepest burial in geohistory. The composition of hydrocarbon inclusion also showed two peaks in gas chromatogram with one peak in C 18 or C 20 and the other in C 26 or C 27 , which indicated the two formation periods of the inclusion. The maturity indices of inclusion component showed that the inclusions were formed in low mature stage of source rock. In summary, the fluid inclusion of Sangonghe formation of Jurassic in Yanqi basin were mainly formed in two periods, with one in late Jurassic when the source rock of the basin was in low mature stage, and the other in the end of Jurassic when the formation reached its deepest burial and the source rock in mature stage.
  • [1] 1. 卢明国等。储层裂缝充填矿物的流体包体在油气运移史研究中的应用[J].南方油气地质，1995,2 （1）:49～56 [Lu Mingguo,et al.Application of fluid inclusions in oil and gas migration from reservoir fracture[J].Petroleum Geology of South China,1995,2（1）:49～56]

    2. 张金亮。利用流体包裹体研究油藏注入史[J].西安石油学院学报，1998,13（4）: 1～4 [Zhang Jinliang.Use of fluid inclusions in the study of charging history of reservoir[J].Journal of Xi′an Petroleum Institute,1998,13（4）:1～4]

    3. Parnell J,Carey P F,Monson B.Fluid inclusion constraints on temperatures of petroleum migration from authigenic quartz in bitumen veins[J].Chemical Geology,1996,129: 217～226

    4. Parnell J,Carey P,Duncan W.History of hydracarbon charge on the Atlantic margin: Evidence from fluid-inclusion studies,West of Shetland[J].Geology,1998,26（9）:807～810

    5. 赵文智，何登发等。石油地质综合研究导论[M].北京:石油工业出版社，1999 [Zhao Wenzhi,He Dengfa et al.Introduction to the comprehensive study of petroleum geology[M].Beijing:Petroleum Industry Publishing House,1999]

    6. 丘比特 J M,英格兰 W A.油藏地球化学[M].北京:石油工业出版社，1997 [Cubitt J M,England W A.The geochemistry of reservoirs[M].Society of Geology of London,1995]
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  • Received:  2001-06-22
  • Revised:  2001-09-05
  • Published:  2002-04-10

Analysis on the Formation Time of Fluid Inclusion in Sangonghe Formation of Jurassic in Yanqi Basin, Northwest China

  • 1. Key Laboratory of petroleum entrapment mechanisms of ministry education China, University of petroleum beijing 102249;
  • 2. instit ute of petroleum exploration and development of henan oil Field Company, China petrochemical Corp. Ltd Nanyang henan 473132
  • Received Date: 2001-06-22
  • Rev Recd Date: 2001-09-05
  • Publish Date: 2002-04-10

Abstract: The fluid inclusions in Sangonghe Formation of Jurassic in Yanqi basin Northwest China were investigated. The fluid inclusions in Sangonghe Formation , which mostly occurred in the dissolution or pressure solution pores of quartz grains, were usually small in their size and low in their abundance. Up to 80% of organic inclusions existed in the state of liquid hydrocarbon phase, only some 20% of them in gaseous and gaseous-liquid hydrocarbon phases. In addition to organic inclusions, there were some saline-aqueous solution inclusions. Combined with the evolution history of the diagenesis and organic matter maturation, the fluid inclusions were mainly formed in the stage of late diagenesis in late Jurassic. The homogenization temperatures of inclusions fell in the temperature interval of 101～130℃, with ranges of 101～110℃ and of 121～130℃ as two peaks. According to the temperature history of Sangonghe Formation, the temperature of 101～110℃ was consistent with the temperature of Sangonghe Formation in late Jurassic and the peak of 121～130℃ with the temperature in the end of Jurassic when the formation reached its deepest burial in geohistory. The composition of hydrocarbon inclusion also showed two peaks in gas chromatogram with one peak in C 18 or C 20 and the other in C 26 or C 27 , which indicated the two formation periods of the inclusion. The maturity indices of inclusion component showed that the inclusions were formed in low mature stage of source rock. In summary, the fluid inclusion of Sangonghe formation of Jurassic in Yanqi basin were mainly formed in two periods, with one in late Jurassic when the source rock of the basin was in low mature stage, and the other in the end of Jurassic when the formation reached its deepest burial and the source rock in mature stage.

LIU GuangDi, ZHANG ZhongPei, ZHANG ZhiHuan, CHEN WenXue, CHEN WenLi, LI YongLin. Analysis on the Formation Time of Fluid Inclusion in Sangonghe Formation of Jurassic in Yanqi Basin, Northwest China[J]. Acta Sedimentologica Sinica, 2002, 20(2): 345-348.
Citation: LIU GuangDi, ZHANG ZhongPei, ZHANG ZhiHuan, CHEN WenXue, CHEN WenLi, LI YongLin. Analysis on the Formation Time of Fluid Inclusion in Sangonghe Formation of Jurassic in Yanqi Basin, Northwest China[J]. Acta Sedimentologica Sinica, 2002, 20(2): 345-348.
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