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Determination of the Distribution of Braided River Sedimentary Micro-phases by Combining the Lithology Thickness Ratio and Logging Facies—Take the Lower Layer He of Block A in Sulige Gas Field as an Example

  • Ji Zhang
  • Long Wang
  • Zhixin Ma
  • Bin Fu
  • Jiukui Kang
Conference paper
Part of the Springer Series in Geomechanics and Geoengineering book series (SSGG)

Abstract

The reservoir of the block A in Sulige gas field was a typically low porosity and low permeability reservoir with fluvial phase deposition, in which the lower layer He 8 is braided river deposits. Because of the incompleteness of seismic data and the low resolution of analysis in the small layer, the plane distribution of the sedimentary phases of layers and the small-scale layers obtained from seismic inversion are often not ideal enough. Lithology thickness ratio and logging phases are the main methods for understanding the distribution of sedimentary phases. Taking the lower layer He 8 of block A in Sulige gas field as an example, through combining the thickness ratio with logging phases together. The principle of determining the plane boundary of sedimentary phases was established, and a more systematic method for determining the plane distribution of braided river phases was formed. By means of this method, the sedimentary phase distribution in the lower layer He 8 in dense well pattern of block A was studied. The plane distribution parameters of the geological bodies such as the channel, the heart and the beach are obtained. Compared with the related geological bodies of modern rivers, it was proved that this method is more reasonable for the prediction of fluvial phase braided river deposits.

Keywords

Logging phase Braided river Sedimentary micro-phases Plane distribution Lithologic thickness ratio 

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Copyright information

© Springer Nature Singapore Pte Ltd. 2019

Authors and Affiliations

  • Ji Zhang
    • 1
    • 2
  • Long Wang
    • 1
    • 2
  • Zhixin Ma
    • 1
    • 2
  • Bin Fu
    • 1
    • 2
  • Jiukui Kang
    • 3
  1. 1.Sulige Gas Field Research Center, Chang Qing Oilfield Company, PetroChinaXi’anChina
  2. 2.State Engineering Laboratory of Low Permeability Oil & Gas Field Exploration and DevelopmentXi’anChina
  3. 3.Xian Sinoline Petroleum Science & Technology Co., Ltd.Xi’anChina

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