Hasan A.,EAGE Annual Conference and Exhibition |
Foss B.,EAGE Annual Conference and Exhibition |
Sagatun S.I.,EAGE Annual Conference and Exhibition |
Tjostheim B.P.,EAGE Annual Conference and Exhibition |
And 2 more authors.
JPT, Journal of Petroleum Technology | Year: 2011
Gas coning is the tendency of gas to impel oil downward in an inverse-cone contour toward the well perforations. After gas reaches the well, gas production will dominate the flow stream and oil production will decrease significantly. In this paper, the gas-coning process in a gas/oil reservoir (completed with a single horizontal well) is modeled, simulated, and analyzed by applying a nonlinear-control approach. The model that describes the well/reservoir interaction can be a boundary-control problem of the porous media with two boundary conditions: a Neumann boundary condition describing no flow at the outer boundary of the reservoir and a nonlinear-boundary condition describing the well's production rate.