底水油藏的压锥效果分析

底水锥进是影响底水油藏开发效果的重要因素。底水锥进常常使油井过早见水、含水上升迅速、产量递减加快。关井压锥是人们常常想到的抑制底水锥进的方法之一，但压锥效果并不理想。因此，从理论上分析了压锥效果差的原因：底水锥进的动力为油井的生产压差，水锥动力强，水锥速度快，而压锥的动力为地层的水油重力差，压锥动力弱，压锥速度慢。还通过数值模拟方法对压锥效果进行了研究，模拟结果显示，压锥后油井的含水快速升高至压锥前的水平，油井产量虽略有提高，但与压锥期间油井关井损失的产量相比，仍然得不偿失。建议矿场上不要采用关井压锥的方法来克服底水锥进带来的不利影响。

Analysis on coning control of bottom water reservoir

Bottom water coning is an important factor affecting reservoir development effect, causing earlier water breakthrough, rapid water cut increase and production decrease. Shut-in coning control is one of the methods people usually use, but it has not ideal effect. This paper analyzes theoretically poor effect of coning control: bottom water coning drive is production pressure difference of oil well with strong water coning force and high speed, while coning control drive is water and oil gravity difference with weak coning control force and low speed. It uses numerical simulation method to study coning control effect. Simulation results shows that water cut increases rapidly after coning control to the level before coning control and oil production increases a little but too little compared with the production loss during oil well shut-in. It suggests not to use shut-in coning control method to deal with water coning effect.