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当前学科：井控理论知识
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按《井下作业井控实施细则》对无循环通道的井直接解封封隔器后关井，再正循环节流压井，压井结束后观察6～8小时，再正循环洗井（）周，计算油气上窜速度。
A . 1
B . 1.5
C . 2
D . 3
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