The dimensionless average formation pseudopressure is directly proportional to the dimensionless producing time if the influence of wellbore storage coefficient and skin factor is neglected.
在不考虑井筒储集系数和表皮系数影响的情况下，无量纲平均地层拟压力与无量纲生产时间成正比。
2
The pseudo-triaxial compression tests and confining pressure reduction tests were carried out for coal specimen strengths in different stress on servo-controlled testing machine.
基于在伺服试验机对煤样的常规三轴压缩和三轴卸围压试验，分析了煤样在不同应力条件下的强度和变形特征。
3
Bottom pressure calculation method of surpressure gas well and how to correct the pseudo-critical parameters of natural gas with high content of H_2S and CO_2 are presented in this paper.