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Article Navigation >  Acta Sedimentologica Sinica  > 2019  >  37(3): 589-600

LI BaiQiang, WANG QiCong, ZHANG XiaoLi, WU ZhenZhen, JU YinJuan, JI Wei, LI Jun. Characteristics of Lithofacies Paleogeography and Its Effect on the Majiagou Submember 51-2 Reservoir in the Central-southern Ordos Basin[J]. Acta Sedimentologica Sinica, 2019, 37(3): 589-600. doi: 10.14027/j.issn.1000-0550.2018.141
Citation: LI BaiQiang, WANG QiCong, ZHANG XiaoLi, WU ZhenZhen, JU YinJuan, JI Wei, LI Jun. Characteristics of Lithofacies Paleogeography and Its Effect on the Majiagou Submember 51-2 Reservoir in the Central-southern Ordos Basin[J]. Acta Sedimentologica Sinica, 2019, 37(3): 589-600. doi: 10.14027/j.issn.1000-0550.2018.141
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Characteristics of Lithofacies Paleogeography and Its Effect on the Majiagou Submember 51-2 Reservoir in the Central-southern Ordos Basin

doi: 10.14027/j.issn.1000-0550.2018.141
  • 1.

    Department of Geology/National & Local Joint Engineering Research Center of Carbon Capture and Storage Technology, Northwest University, Xi'an 710069, China;

  • 2.

    School of Earth Sciences and Engineering, Xi'an Shiyou University, Xi'an 710065, China;

  • 3.

    College of Environmental and Surveying Engineering, Suzhou University, Suzhou, Anhui 234000, China;

  • 4.

    No.2 Gas Production Plant of Yanchang Gasfield, Oil and Gas Exploration Company, Shaanxi Yanchang Petroleum(Group) Co., Ltd. Research Institute, Shaanxi Yanchang Petroleum(Group) Co., Ltd., Yulin, Shaanxi 718500, China

Funds:  National Science and Technology Major Project, No. 2017ZX05005-002-004
  • Received Date: 2018-03-26
  • Rev Recd Date: 2018-05-28
  • Publish Date: 2019-06-10
  • In order to investigate the effect of lithofacies paleogeography on the reservoir, the lithofacies and lithofacies paleogeography characteristics of the Majiagou submember 51-2 in the central-southern Ordos Basin were studied by various methods, including core observation, thin sections identification, and multi-mineral logging interpretation, as well as single factor analysis and multi factor comprehensive mapping. Then the effect of lithofacies paleogeography on the reservoir was analyzed by combining with reservoir distribution, which we obtained by logging interpretation and the data of actual gas production. The result shows that the main rock types of the Majiagou submember 51-2 mainly include dolostone (dolomicrite, gypsum and salt corrosion breccia dolomicrite, karst breccia dolomicrite, karst breccia calcitic crystal powder dolostone, calcitic dolostone, gypsiferous dolostone, argillaceous calcitic dolostone, and argillaceous dolostone) and limestone (dolomitic limestone and argillaceous dolomitic limestone), as well as partial evaporite (gypsum and halite). The lithofacies paleogeography environment mainly includes the evaporate platform, which can be divided into dolomitic flat and gypsiferous dolomitic flat, as well as a restricted platform, which can be divided into salt lake, gypsum lake, and gypsiferous lake. The reservoir can be affected by lithofacies paleogeography to some extent. Dolomitic flat and gypsiferous flat, as well as partial gypsiferous and gypsum lake are all the favorable areas for the reservoir.
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  • 1. 

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  • Received:  2018-03-26
  • Revised:  2018-05-28
  • Published:  2019-06-10

Characteristics of Lithofacies Paleogeography and Its Effect on the Majiagou Submember 51-2 Reservoir in the Central-southern Ordos Basin

doi: 10.14027/j.issn.1000-0550.2018.141
  • 1. Department of Geology/National & Local Joint Engineering Research Center of Carbon Capture and Storage Technology, Northwest University, Xi'an 710069, China;
  • 2. School of Earth Sciences and Engineering, Xi'an Shiyou University, Xi'an 710065, China;
  • 3. College of Environmental and Surveying Engineering, Suzhou University, Suzhou, Anhui 234000, China;
  • 4. No.2 Gas Production Plant of Yanchang Gasfield, Oil and Gas Exploration Company, Shaanxi Yanchang Petroleum(Group) Co., Ltd. Research Institute, Shaanxi Yanchang Petroleum(Group) Co., Ltd., Yulin, Shaanxi 718500, China
Funds:  National Science and Technology Major Project, No. 2017ZX05005-002-004
  • Received Date: 2018-03-26
  • Rev Recd Date: 2018-05-28
  • Publish Date: 2019-06-10

Abstract: In order to investigate the effect of lithofacies paleogeography on the reservoir, the lithofacies and lithofacies paleogeography characteristics of the Majiagou submember 51-2 in the central-southern Ordos Basin were studied by various methods, including core observation, thin sections identification, and multi-mineral logging interpretation, as well as single factor analysis and multi factor comprehensive mapping. Then the effect of lithofacies paleogeography on the reservoir was analyzed by combining with reservoir distribution, which we obtained by logging interpretation and the data of actual gas production. The result shows that the main rock types of the Majiagou submember 51-2 mainly include dolostone (dolomicrite, gypsum and salt corrosion breccia dolomicrite, karst breccia dolomicrite, karst breccia calcitic crystal powder dolostone, calcitic dolostone, gypsiferous dolostone, argillaceous calcitic dolostone, and argillaceous dolostone) and limestone (dolomitic limestone and argillaceous dolomitic limestone), as well as partial evaporite (gypsum and halite). The lithofacies paleogeography environment mainly includes the evaporate platform, which can be divided into dolomitic flat and gypsiferous dolomitic flat, as well as a restricted platform, which can be divided into salt lake, gypsum lake, and gypsiferous lake. The reservoir can be affected by lithofacies paleogeography to some extent. Dolomitic flat and gypsiferous flat, as well as partial gypsiferous and gypsum lake are all the favorable areas for the reservoir.

LI BaiQiang, WANG QiCong, ZHANG XiaoLi, WU ZhenZhen, JU YinJuan, JI Wei, LI Jun. Characteristics of Lithofacies Paleogeography and Its Effect on the Majiagou Submember 51-2 Reservoir in the Central-southern Ordos Basin[J]. Acta Sedimentologica Sinica, 2019, 37(3): 589-600. doi: 10.14027/j.issn.1000-0550.2018.141
Citation: LI BaiQiang, WANG QiCong, ZHANG XiaoLi, WU ZhenZhen, JU YinJuan, JI Wei, LI Jun. Characteristics of Lithofacies Paleogeography and Its Effect on the Majiagou Submember 51-2 Reservoir in the Central-southern Ordos Basin[J]. Acta Sedimentologica Sinica, 2019, 37(3): 589-600. doi: 10.14027/j.issn.1000-0550.2018.141
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