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Article Navigation >  Acta Sedimentologica Sinica  > 2002  >  20(2): 320-325

WANG JianBao, GUO RuTai, XIAO XianMing, LIU ZuFa, SHEN JiaGui. Timing and Phases of Hydrocarbon Migration and Accumulation of the Formation of Oil and Gas Pools in Lunnan Low Uplift of Tarim Basin[J]. Acta Sedimentologica Sinica, 2002, 20(2): 320-325.
Citation: WANG JianBao, GUO RuTai, XIAO XianMing, LIU ZuFa, SHEN JiaGui. Timing and Phases of Hydrocarbon Migration and Accumulation of the Formation of Oil and Gas Pools in Lunnan Low Uplift of Tarim Basin[J]. Acta Sedimentologica Sinica, 2002, 20(2): 320-325.
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Timing and Phases of Hydrocarbon Migration and Accumulation of the Formation of Oil and Gas Pools in Lunnan Low Uplift of Tarim Basin

  • State Key Laboratory of Organic Geochemistry,Guangzhou Institute of Geochemistry,Chinese Academy of Sciences,Guangzhou 510640

  • Received Date: 2001-03-13
  • Rev Recd Date: 2001-08-30
  • Publish Date: 2002-04-10
  • Lower Palaeozoic strata in the Lunnan Low Uplift,of Tarim Basin, China, have recently been found to contain abundant migrated solid bitumen and petroleum-bearing fluid inclusions. In order to determine their origin and timing of the formation, bitumen/inclusion-rich core samples recovered from several wells in the area (mainly carbonate reservoir rocks and carrier units) were examined using a combination of organic petrographic and microthermometric techniques. Based on bitumen reflectance (BR o) measurements, solid bitumens were divided into three main groups, viz. (I) 1.20%～1.35%, (II) 0.80%～0.95% and (III) 0.05% . Hydrocarbon fluid inclusions were also grouped into three different assemblages based on their fluorescence colour and homogeneous temperatures ( T h): (I) yellow-green, T h = 80～90℃; (II) green, T h = 60～70℃ and (III) blue-green fluorescence, T h = 100～150℃. Spatial distributions of fluid inclusion Groups I, II and III within the structure closely match ed those for bitumen Groups I, II and III, respectively, and indicated that there were three separate episodes of large-scale oil migration and accumulation in the uplift. Using the BR o and inclusion Th data in combination with available burial and geothermal history in formation for the area, it was concluded that three corresponding phases of petroleum generation and migration took place during (I) Silurian to early Devonian, (II) Cretaceous to early Tertiary and (III) late Tertiary, from Cambrian-Ordovician source rocks. These findings provide useful insights into the complex origins of oil and gas pools in this region of Tarim Basin.
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    3. 贾承造，李小池等。塔里木盆地油气藏形成条件及油气富集规律[A].北京石油勘探开发科学研究院。"八五"国家重点科技攻关项目成果报告（85-101-01-02）[R].1995.1～2,85～101 [Jia C Z,Li X Z,et al.Formation conditions and petroleum accumulation pattern of the Tarim Basin [A].Beijing Institute of Petroleum Development and Exploration ,Internal report of state key project,1995.1～2,85～101]

    4. 刘昌玉，陈永武。轮南断垒带三迭系石油地质特征和油气聚集规律的研究[A].童晓光，梁狄刚主编。塔里木盆地油气勘探论文集[C].乌鲁木齐:新疆科技卫生出版社，1991.497～504 [Liu C Y,Chen H W.The petroleum geological characteristics and distribution pattern of oil and gas pools of Triassic strata in the Lunnan Area,Tarim Basin[A].In:Tong X G,Liang D G,eds.Paper Compilation of Oil and Gas Formation in the Tarim Basin[C].Urumqi:Xinjiang Science and Sanitation Press,1991.497～504]

    5. 覃汉生，郭建华，赵妮。塔里木盆地轮南地区奥陶系油气藏圈闭成因分析及油气藏类型[A].童晓光，梁狄刚主编。塔里木盆地油气勘探论文集[C].乌鲁木齐:新疆科技卫生出版社，1991.545～551 [Tan H S,Guo G H,Zhou L.Origin of trapping structures and types of oil and gas pools in Ordovician strata in the Lunnan Area of the Tarim Basin[C] .In:Tang X G,Liang D G,eds.Paper Compilation of Oil and Gas Formation in the Tarim Basin[C].Urumqi:Xinjiang Science and Sanitation Press,1991.545～551]

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    7. 黄传波。塔里木盆地寒武-奥陶系碳酸盐岩油气藏形成条件[J].新疆石油地质，2000,21（3）:188～192 [Huang C B.Formation and distribution of oil and gas pools in the Taibei Uplift of the Tarim Basin[J].Xinjiang Petroleum Geology,1998,19（5）:357～361 ]

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  • Received:  2001-03-13
  • Revised:  2001-08-30
  • Published:  2002-04-10

Timing and Phases of Hydrocarbon Migration and Accumulation of the Formation of Oil and Gas Pools in Lunnan Low Uplift of Tarim Basin

  • State Key Laboratory of Organic Geochemistry,Guangzhou Institute of Geochemistry,Chinese Academy of Sciences,Guangzhou 510640
  • Received Date: 2001-03-13
  • Rev Recd Date: 2001-08-30
  • Publish Date: 2002-04-10

Abstract: Lower Palaeozoic strata in the Lunnan Low Uplift,of Tarim Basin, China, have recently been found to contain abundant migrated solid bitumen and petroleum-bearing fluid inclusions. In order to determine their origin and timing of the formation, bitumen/inclusion-rich core samples recovered from several wells in the area (mainly carbonate reservoir rocks and carrier units) were examined using a combination of organic petrographic and microthermometric techniques. Based on bitumen reflectance (BR o) measurements, solid bitumens were divided into three main groups, viz. (I) 1.20%～1.35%, (II) 0.80%～0.95% and (III) 0.05% . Hydrocarbon fluid inclusions were also grouped into three different assemblages based on their fluorescence colour and homogeneous temperatures ( T h): (I) yellow-green, T h = 80～90℃; (II) green, T h = 60～70℃ and (III) blue-green fluorescence, T h = 100～150℃. Spatial distributions of fluid inclusion Groups I, II and III within the structure closely match ed those for bitumen Groups I, II and III, respectively, and indicated that there were three separate episodes of large-scale oil migration and accumulation in the uplift. Using the BR o and inclusion Th data in combination with available burial and geothermal history in formation for the area, it was concluded that three corresponding phases of petroleum generation and migration took place during (I) Silurian to early Devonian, (II) Cretaceous to early Tertiary and (III) late Tertiary, from Cambrian-Ordovician source rocks. These findings provide useful insights into the complex origins of oil and gas pools in this region of Tarim Basin.

WANG JianBao, GUO RuTai, XIAO XianMing, LIU ZuFa, SHEN JiaGui. Timing and Phases of Hydrocarbon Migration and Accumulation of the Formation of Oil and Gas Pools in Lunnan Low Uplift of Tarim Basin[J]. Acta Sedimentologica Sinica, 2002, 20(2): 320-325.
Citation: WANG JianBao, GUO RuTai, XIAO XianMing, LIU ZuFa, SHEN JiaGui. Timing and Phases of Hydrocarbon Migration and Accumulation of the Formation of Oil and Gas Pools in Lunnan Low Uplift of Tarim Basin[J]. Acta Sedimentologica Sinica, 2002, 20(2): 320-325.
shu

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