西南石油大学学报(自然科学版)

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Stress Field Simulation Based on Log Curves and the Theory of
Elastic Thin Plate

Xi Cheng1, Shi Zejin2*, Wang Changcheng1, Zhang Zhongyi3   

  1. 1. College of Energy Resources,Chengdu University of Technology,Chengdu,Sichuan 610059,China
    2. State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation,Chengdu University of Technology,Chengdu,Sichuan 610059,China
    3. Exploration and Development Research Institute,Changqing Oilfield,CNPC,Xi′ an,Shaanxi 710018,China
  • Online:2015-02-01 Published:2015-02-01

Abstract:

The Yanchang Formation of Changqing Oilfield is characteristic of fractured reservoir with low porosity and low
permeability sandstone,so we carried out the research on regional stress field simulation,in order to predict the fracture development
of Yanchang Formation,which can guide the exploration and development in the future. Because there is no seismic
data in the research area,so the conventional research ways of fracture prediction are not suitable in research area. This article,
based on log curves,used the theory of elastic thin plate to simulate the stress field,and made use of the density and P-wave
carried by original log curves. Meanwhile,the authors also did some research such as the field profile measurement and core
observation etc. Comparing the analysis results through a variety of means,we think we have got the better result in this research.
The existing high production wells are all located in the strong stress zones. The stress field simulation results can be
the most important guidance for location of production well next. This technical method can also be extended to other blocks
in Changqing Oilfield.

Key words: low porosity and low permeability, fracture reservoir, stress field simulation, the theory of elastic thin plate,
Changqing Oilfield