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深水钻井沿隔水管超声波气侵实时监测技术研究

China Offshore Oil and Gas(2016)

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Abstract
早期溢流监测对预防石油开发钻井过程中井喷失控恶性事故具有至关重要的作用.深水钻井作业过程中在不破坏钻井隔水管力学结构的前提下,基于非接触式超声波测量手段沿程监测隔水管内部钻井液流动特征参数,设计了适合深水钻井隔水管气侵监测系统.实验模拟分析了深水钻井隔水管气侵监测系统超声波时差法和超声波多普勒法的气侵监测效果,结果表明:超声波时差法虽然在清水中可以实现含气率测量,但是对于水基钻井液并不适合;极小含气情况下,多普勒频移量出现极大衰减,并随着含气率的增加而下降,因此超声波多普勒方法对气侵早期识别具有可行性.上述成果对于深水钻井早期溢流监测有指导意义.
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Key words
deep water drilling,riser,kick detection,blowout,ultrasonic Doppler method,ultrasonic time difference method
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