但是当水文地质条件复杂，不能引用影响半径时，就不符合裘布依井流公式的适用条件，也就不能再用大井法计算排水量；
The generalized large well method is not applicable when the influence radius doesn't exit and the complicated hydrogeological condition is not fit to the condition of Dupuit well-flow formula.
应用有限元法对辽河滩海油田大斜度定向井抽油杆柱受力进行了三维计算。
Using finite element analysis method, three-dimensional calculation is conducted for force summing on rod in high-inclination well of Liaohe tidal zone oilfield.
由于群井连通法岩盐开采量大，采出卤水浓度大，溶腔形状比较均匀，目前成为了国内外水溶采矿的一种发展趋势。
Making use of multi-well method, the quantity of rock salt mining is more, the concentration of brine is higher, and the shape of cavity is regularer than others.
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