在投加环空保护液后，环空腐蚀速度远远小于油管内腐蚀速度。
After the fluid is used, the annulus corrosion rate is more lower that that of tubings.
一种完井部件。它通常包括在接近封隔器的下部组合中。它用来提供在油管与环空之间的连通。
A completion component, generally included in the lower assembly near the packer, that allows communication between the tubing and annulus.
由雾白色标注的油管和环空A处也能看到流动（有流动），而深蓝色的环空B处显示无流动（无流动）。
Flow can be seen in the tubing and in annulus A (Flow), distinguished by the white mist coloring, while annulus B is dark blue indicating no flow observed (No Flow).
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