不考虑岩石的压缩性，忽略重力作用。
Don't consider the compressibility of rock, and ignoring gravitation.
计算结果表明：各种非线性渗流效应和动态流体重力作用对计算结果有一定的影响，忽略这些因素将对计算结果产生较大的偏差；
The calculation results show: each nonlinear flow and dynamic fluid gravity have certain effect on calculation results, and ignoring these factors will cause much deviation;
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