库车凹陷克拉2气田储层成岩作用和油气充注特征

于志超; 刘可禹; 赵孟军; 柳少波; 卓勤功; 鲁雪松

doi:10.3799/dqkx.2016.044

Volume 41 Issue 3

Mar. 2016

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Article Navigation > Earth Science > 2016 > 41(3): 533-545

Yu Zhichao, Liu Keyu, Zhao Mengjun, Liu Shaobo, Zhuo Qingong, Lu Xuesong, 2016. Characterization of Diagenesis and the Petroleum Charge in Kela 2 Gas Field, Kuqa Depression, Tarim Basin. Earth Science, 41(3): 533-545. doi: 10.3799/dqkx.2016.044

Citation:

Yu Zhichao, Liu Keyu, Zhao Mengjun, Liu Shaobo, Zhuo Qingong, Lu Xuesong, 2016. Characterization of Diagenesis and the Petroleum Charge in Kela 2 Gas Field, Kuqa Depression, Tarim Basin. Earth Science, 41(3): 533-545. doi: 10.3799/dqkx.2016.044

Citation:

Yu Zhichao, Liu Keyu, Zhao Mengjun, Liu Shaobo, Zhuo Qingong, Lu Xuesong, 2016. Characterization of Diagenesis and the Petroleum Charge in Kela 2 Gas Field, Kuqa Depression, Tarim Basin. Earth Science, 41(3): 533-545. doi: 10.3799/dqkx.2016.044

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Characterization of Diagenesis and the Petroleum Charge in Kela 2 Gas Field, Kuqa Depression, Tarim Basin

doi: 10.3799/dqkx.2016.044

Yu Zhichao^{1,2
,},
Liu Keyu^{1,2
,
,},
Zhao Mengjun^1,2,
Liu Shaobo^1,2,
Zhuo Qingong^1,2,
Lu Xuesong^1,2

1.
PetroChina Exploration and Development Research Institute, Beijing 100083, China
2.
Key Laboratory of Basin Structure and Hydrocarbon Accumulation, CNPC, Beijing 100083, China

Received Date: 2015-09-17
Publish Date: 2016-03-15

Abstract

Abstract

The Kela-2 gas field is the most productive gas field in China. The lower Cretaceous Bashenjiqike Formation (K₁bs) are the dominated gas-bearing strata. Characterization of the diagenetic history, different fluid inclusion assemblages and the effects of oil emplacement on diagenetic processes of the K1bs in the Kuqa Depression, Tarim Basin have been studied using a combination of techniques such as polarizing microscope, cathode luminescence (CL), scanning electron microscope (SEM), CT three-dimensional reconstruction, X-ray diffraction (XRD), fluorescence spectroscopy, microthermometry, and Raman microspectroscopy. Diagenetic events identify include quartz overgrowths, early calcite cements, dolomite cements, ankerite cements, micro-quartz and authigenic kaolinite. Three episodes of oil emplacement are recorded by the diagenetic products in the K₁bs Formations. The first episode consists of the yellowish-brown fluorescent petroleum inclusions hosted in the transgranular fractures, cleavage plans of the feldspar and calcite cements, paired with low trapped temperature and relatively high salinity, forming around 18 Ma; the second episode consists of the yellow-white to blue-white petroleum inclusions located in the transgranular fractures, boundary of quartz particles and dolomite cements, paired with high trapped temperature and high salinity, forming around 6 Ma; the third episode consists of the CH₄-bearing vapour inclusions within the annealed microfractures and ankerite cements, having with high trapped temperature and low salinity, forming around 4 Ma. Authigenic kaolinite, micor-quartz and solid bitumen are the results transformed by the advanced natural gas charge.
- diagenesis,
- fluid inclusions,
- oil emplacement,
- Kuqa depression

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References(38)

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Characterization of Diagenesis and the Petroleum Charge in Kela 2 Gas Field, Kuqa Depression, Tarim Basin

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