... MPa) was attained in 1978-1980 and marks the onset of significant subsidence in the Ekofisk field. Ongoing fluid pressure depletion from 38 MPa to the present level of approximately 25 MPa is sufficient for sliding on faults with dip angles of 48° to 73°. Preexisting fractures in the Ekofisk reservoir...

... Abstract The Ekofisk Field is a large oil reservoir located in the Norwegian sector of the North Sea. About 8.2 meters of seafloor subsidence has occurred above this thick, high porosity chalk reservoir since production started in 1971. The seafloor subsidence is a result of reservoir...

... compressibility reservoir radius reservoir characterization application subsidence poisson reservoir assessment probability distribution reservoir geomechanics estimation september 30-october 3 displacement integrity unknown quantity fluid dynamics possible value reservoir simulation simulation...

... Abstract This paper presents a forward model for subsidence prediction and an inversion model to calculate the reservoir behaviour from subsidence data. The forward model employs combinations of analytic solutions to the elasticity equations, which approximate the boundary conditions...