While underbalance drilling spreads greatly, rotating blowout preventer, as a kind of high technical product, is the crucial equipment to control well pressure.

国内欠平衡钻井普遍实施，要用到的旋转防喷器是关键设备，技术含量高。

youdao

Ram-type blowout preventer is important equipment used in oil drilling operation.

板 防喷器是石油钻井过程中的一种重要设备。

youdao

At that depth, a key piece of equipment is the blowout preventer, which weighs up to 300 tons and caps the well, holding back ultrapressurized oil deep in the Earth.

FORBES: On The Cover/Top Stories

At that depth, a key piece of equipment is the blowout preventer, which weighs up to 300 tons and caps the well, holding back ultrapressurized (15, 000 pounds per square inch) oil deep in the Earth.

FORBES: On The Cover/Top Stories

We in the industry have long had great confidence in the blow-out preventer as the ultimate failsafe piece of safety equipment.

WSJ: Tony Hayward: What BP Is Doing About the Gulf Gusher