套压(casing pressure),即套管压力，地面施加到井内套管上的压力。合理地控制套压可以保持好的动液面，从而提高油井的高产稳产。
它有两种基本结构，即镶套压辊和整体压辊。
There are two kinds of basic structures, making-up press roller and overall press roller.
记录钻杆压和套压；
其结构为双压式，有两套加料装置和两套压轮。
It is constructed as double pressing type and has two sets of charging device and two pressing wheel.
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