We can find that there is apparent peak value on the flow curve, the driving pressure differential corresponding to the peak value is the feasible drawdown.

发现流量曲线存在明显的峰值，该峰值对应的驱动压差就是合理生产压差。

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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。

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