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downhole pressurized jet assisted drilling system
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downhole pressurized jet assisted drilling system
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钻井新技术与装备
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downhole pressurized jet assisted drilling system
井下增压射流辅助破岩钻井装置
通过安装在钻头上方的井下增压装置,将钻柱中循环的部分钻井液增压后形成增压射流,经钻头的超高压喷嘴喷出,冲击井底后直接或辅助钻头破碎岩石,将水力破岩与机械破岩紧密结合起来,达到提高钻速目的的钻井装置。
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