Modern geodynamics and its influence on the secondary filtration properties of the collectors of the northeast part of the Sakhalin shelf

Abstract

The complex tectonic structure of the Okhotsk Sea shelf and high geodynamic activity makes it necessary to use of geomechanical modeling for the prediction of the secondary reservoir properties of collectors. 3D model of fractured porosity and permeability for Kirinskoye, Ayashsky and East-Odoptinsky license areas was built. The results of modeling revealed filtration channels where can occur both vertical and horizontal migration of hydrocarbons. It is found that the secondary permeability significantly is different of the upper and lower stratigraphic horizons and the okobykayskaya clay stratum is the surface, which is a regional tire. All calculations were performed on a 3D grid geological model, which allows using the data for hydrodynamic modeling.