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采用球阀设计的井口防喷器可耐20000磅/英寸~2以上的地层压力,高压泥浆可以帮助井口的加速关闭。这种新型阀是温哥华Val-U海洋服务有限公司研制成功的。
Wellbore blowout preventers with ball valve design are resistant to formation pressures of 20,000 psi or more and high pressure muds help speed up wellhead closure. This new valve was developed by Vancouver Val-U Marine Services Ltd.