水井酸处理效果预测研究

水井酸处理效果预测一直缺乏成熟的方法。提出了根据水位恢复曲线形态和含水层裂隙特征来预测井的首次酸处理效果，经与石油界所用方法有明显不同。石油界普遍认为，只有不位恢复曲线为快速上翘型的低产碳酸盐岩井才适合酸处理（即基质酸化），但作者近年来发现，多数水位恢复曲线为直线型的低产碳酸盐岩井，即井中含水层裂隙平均宽度＜5mm的井，酸处理效果也很好，被调查3眼这类井的单位涌水量增加值平均为423％；水位恢复曲线为缓慢上翘型的井中，部分含水层裂隙被松散物充填的井，采用特殊的酸处理方法处理后，井的单位涌水量可增加100％。另外，采用适当的方法，使用足够数量的酸进行首次酸处理后，水井再进行酸处理一般效果都很差。

Study on Discharge Increment Effect Forecast for Acidized Carbonate Well

There hasn' t been any mature way to forecast the yield increment effect for acidized carbonate well. The authors advance a way to forecast the yield increment according to the recovery curve of water level and character of cranny in the carbonate aquifer, which is different from conventional methods. In the circle of petroleum production, only wells which recovery curves rise rapidly are considered to get yield increment through acid treatment. But the authors find that wells which recovery curves are linear and the average width of the cranny are small (less than 5 mm) can also get yield increment after acid treatment; the average yield increment of three acidized wells is 423%; while for the wells which recovery curves rise slowly, the yield increment is 100 % after specific acid treatment and the crannies of the aquifer are filled with loose substances. If a well has had first acid treatment in proper way with enough quantity of acid, the yield increment would be much less for the second treatment.