We study the magnitude deviation of borehole seismograph and DK 1 seismolograph in Daqing network.
对大庆台网深井摆和DK-1仪器测定的震级偏差进行了研究。
This paper introduces successful construction method and control measure currently used for holedrill, borehole deviation, protection tube, and embedment and installation of bimetal mark.
介绍了目前比较成功的倒垂孔钻孔、钻孔偏斜、保护管安装、双金属标的埋设及安装等施工方法和控制措施。
For the case of tilted borehole, deviation correction for the attitude values should be executed.
对于井眼倾斜的情况，只有进行了井斜校正后，才能获得真实的地层产状。
In oilfield experiment several different kinds of offset-axes bottom-hole assembly are applied in various formation and borehole size in order to study deviation controlling ability of it.
试验过程中，通过在不同地层、不同井眼尺寸条件下应用不同的偏轴钻具组合方式，研究偏轴钻具的防斜能力。
At present the study on gas drilling in terms of borehole deviation mechanism and control method is very few and has not form a theory of large scale systems at home and aboard.
国内外对气体钻井井斜机理及控制方面研究较少，还没有形成系统的理论和技术。
At present the study on gas drilling in terms of borehole deviation mechanism and control method is very few and has not form a theory of large scale systems at home and aboard.
国内外对气体钻井井斜机理及控制方面研究较少，还没有形成系统的理论和技术。
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