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法国Elf aquitainc公司研制成功一种新型气涌报警器(GKW),可通过一个安装在环空内钻井液回路管线下几米处的压力传感器测出钻井液压力脉冲的传播时间,由于钻井液内含有游离气会使压力脉
France Elf aquitainc has developed a new GKW that measures the propagation time of a drilling fluid pressure pulse through a pressure sensor installed a few meters below the annulus of the annulus in the annulus. Because the drilling fluid contains Free gas will make the pressure pulse