司钻法压井第一步中，压井排量保持不变，调节节流阀使立管压力等于初始循环总压力并在整个循环周保持不变。立管压力下降时，开大节流阀-查字典考试网

司钻法压井第一步中，压井排量保持不变，调节节流阀使立管压力等于初始循环总压力并在整个循环周保持不变。立管压力下降时，开大节流阀

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