Application of Corner Point Grid for the Generation of 3D Geological Models for Drilling Purposes

Abstract

Due to its extreme applicability, 3D geological modeling gains more and more space in the oil industry, being today indispensable in the process of geological and geomechanical characterization of the subsurface. The objective of this paper is to present a workflow for structural modeling using a structured grid of Corner Point Grid geometry, exposing the possible gains in quality and robustness in the final volume of a model specially built to characterize the overburden. Through the interpretation of seismic data and well logs, the initial data to start building the model were obtained, extensive quality control processes were carried out to ensure the resolution of possible errors in the mesh due to the non-verticality of the faults. As a result, it was obtained a grid where the structural geology was honored, making it possible that distributions of properties carried out on it will be much more consistent with the reality of the oil fields modeled.