无论在陆地还是在海上，往沙岩中泵入二氧化碳一般都要移除海水，因而导致压力的产生。

Both on land and offshore, pumping carbon dioxide into sandstone usually displaces water, causing pressure to build up.

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之后打开采油树上面的阀以确保工具在存在压力的情况下能够下落，或者通过泵能够泵入。

Then the top valves of the tree are opened to enable the tools to fall or be pumped into the wellbore under pressure.

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在没有将地层压开的情况下为确定能够将流体泵入处理目的层的流量和压力所进行的程序。

A procedure conducted to establish the rate and pressure at which fluids can be pumped into the treatment target without fracturing the formation.

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