Superposition of steady-state coning solutions for multiple wells with reservoir boundaries

Comparisons with finely-gridded simulation show good agreement in predicted critical oil rates when steady state and VE are approached. VE and steady-state are approximately achieved when aspect ratios are greater than about 10. The predicted critical rates are conservative for aspect ratios less than 10. The new solutions demonstrate for several examples how the critical rates from one well are affected by reservoir boundaries, and the two-phase production rates of other wells.