Research and Application of Three Dimensional Stress Field Characterization Method Based on Seismic Data

At present, oil and gas field exploration and development have gradually entered unconventional, low-permeability ultra-low permeability, deep and other fields, and their proportion of oil and gas production continues to increase. The effectiveness of oil and gas exploration and development in unconventional times is influenced by multiple factors such as geology, drilling, and fracturing, and the demand for integrated geological engineering is becoming increasingly evident. Reservoir engineering mechanics parameters are the key link between “geology” and “engineering”, affecting the drillability of the formation (wellbore stability, drilling safety window), compressibility of the rock (geostress, brittleness, Poisson's ratio, Young's modulus), and other aspects. At present, most three-dimensional stress fields are characterized spatially through methods such as well interpolation or simulation, and there are few methods that use direct seismic inversion. This article utilizes spatially continuous seismic data to directly determine the three-dimensional rock mechanics parameter field through pre stack elastic parameter inversion, and predictsthe horizontal principal stress using appropriate geostress models, achieving good application results in drilling engineering, fracturing engineering, and other fields.