Finite Element Numerical Simulation and Analysis of Three-dimensional Soil Stress Field in a Block in the Shunbei Area

Abstract

Geostress is a decisive factor in the deformation and fracture of underground rocks, which has a key influence on the formation of
oil and gas reservoirs and their exploration and development, so the research related to geostress has gradually become a hot spot in recent
years. In this paper, based on the seismic, logging and geological data collected in the study area, based on the theory of elastic mechanics
and multi-axis mechanical experiments, and combined with the phased-wave impedance inversion, we established a parametric model of the
mechanical properties of the rocks in the study area and further improved its accuracy; we carried out the calculation of geostresses and the
characterization of stress distribution, and combined with the three-dimensional finite element theory, formed a set of geostress numerical
simulation technology process and solutions suitable for the study area. The geostress calculation and stress distribution characterization were
carried out, and combined with the three-dimensional finite element theory, formed a set of geostress numerical simulation technology process
and solution suitable for the study area. It provides a strong theoretical support for the comprehensive prediction and analysis of the geostress
field in the region, as well as for the application in geological engineering.