The optimization model which the horizontal well drawdown is regarded as objection function and the perforation distribution as decision variable is presented.
建立了以水平井生产端压差为目标函数、以孔眼分布为决策变量的优化模型，同时和均匀流入剖面、均匀射孔分布的结果进行了对比。
The general drawdown equation and its particular cases for a partially penetrating well discharging at a constant rate from an aquifer-aquitard system are derived and investigated.
本文针对“二元结构”含水层研究了在定流量抽水下非完整井非稳定流情况下的计算方法。
Unsteady testing for oil and gas well includes testing of drawdown curve and build-up curve.
油井和气井的压力不稳定测试，包括压降曲线测试和压力恢复测试。
This paper discusses-the theory and method of deriving the single well Q-S(yield and drawdown) curve using coefficient of permeability from testing and other empirical parameters.
本文探讨了利用测试的渗透系数和其它经验参数推求单孔Q—S（出水量与水位下降）曲线的理论和方法。
Equations of steady drawdown, seepage velocity, quasi steady time and ideal well distance were obtained through analytic seepage equation.
通过分析理论解，从中得出稳态降深方程、稳态渗流速度方程、准稳态时间方程和理想井间距方程。
Note that a well-formed spent bed does not guarantee a uniform extraction; it indicates only the best-possible extraction during the drawdown.
值得注意既是，一个形状好好咖啡粉床并唔代表了好均匀既萃取，只是表明了萃取既好既应该性好大。
The tailings dam in the Third Baiyin Smeltery is a damaged dam. To secure the dam, radial collector well is applied to cause a drawdown of The phreatic line.
白银公司三冶炼厂尾矿坝是一座险病坝，利用辐射井排水降低坝体浸润线的措施，保证了坝体的安全。
This theory has been proved by gas well test in field. According to the apparent steady state date in pressure drawdown curve, the control reserves of a gas well can be calculated correctly.
气藏现埸试验证实了该理论的正确性，并根据压力降落曲线中的视稳定状态资料，便能正确计算气井的控制储量。
During the test, the rock deformation built up a permeability drawdown cone around the wellbore of Well Kela 205, but the decline scope is small and its effect on productivity is not serious.
测试过程中岩石变形使近井区域形成了一个渗透率下降漏斗，但下降的幅度较小，对气井产量的影响也不大。
During the test, the rock deformation built up a permeability drawdown cone around the wellbore of Well Kela 205, but the decline scope is small and its effect on productivity is not serious.
测试过程中岩石变形使近井区域形成了一个渗透率下降漏斗，但下降的幅度较小，对气井产量的影响也不大。
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