Wellhead back pressure regulation and control method and device

作者: Wang Shidong , Fan Hongkang , Sun Mingguang , Wang Guo , Niu Xinming

DOI:

关键词: Back pressureControl theoryThrottleWellheadMathematicsControl methodsControl effectDegree (temperature)

摘要: The invention discloses a wellhead back pressure regulation and control method device. comprises the following steps of obtaining value an opening degree throttle valve in real time; respectively calculating deviation valve; when is greater than preset coarse regulating threshold value, controlling on basis so that reaches set smaller or equal to precision range value. has advantages perturbation-free switching realized; during switching, stable does not have perturbation. capabilities fast at great precise small are effect good; simplified; realization easy; stable.

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