It is a big change to conventional way of drilling mud circulation.

是常规钻井泥浆循环方式的重大变革。

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Due to high pressure at the outlet, it can be installed under level of mud circulation tank.

由于它的出口压力大，可以安装在泥浆循环罐面以下。

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When drilling, it gives big resistance to mud circulation, which is not beneficial to bring up cutting.

常规稳定器在缩径地层起下钻易阻卡，钻进时，泥浆循环阻力大，不利于携岩。

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The speculation is that something went wrong with the circulation of this drilling mud such that it could no longer control the reservoir pressures.

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