The correct volume ensures that the column of fluid in the tubing string is balanced by the column of fluid in the annulus.
正确的用量确保了在油管柱中的液柱被环形空间中的液柱所平衡。
The correct volume ensures that the column of fluid in the tubing string is balanced by the column of fluid in the annulus.
正确的用量确保了在油管柱中的液柱被环形空间中的液柱所平衡。
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