The Effects Of Various Reservoir And Well Parameters On Water Coning Performance

Most research on water coning has been directed toward minimizing water production by reduced well penetration or production rate control. Hovvzver, complete depletion of an oilcolumn underlain by water will necessarily be accompanies by considerable water production, at least in the latter stages of depletion. By means of numerical simulation a systematic study W4S made of the effects of reservoir and well parameters on water coning performance. Included were the effects of aquifer thickness, well penetration, pressure drawdown, and horizontal to vertical permeability ratio. These studies revealed that higher water-oil ratios, at every stage of depletion, resulted from increasing well penetration or increasing pressure drawdown at the producing well. Accompanying the increase in water-oil ratio is an increase in oilproduction rate of the same magnitude thus de -