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HG_1孔系天津市渤海海涂勘探的第一个标准孔。设计孔深700米,孔径不小于130毫米。终孔斜度不大于3°。单是孔斜一项,就大大超出了我队700米深孔8°30′的历史最好水平。为此,我们在分析了普通防斜方法的利弊之后,参考了石油钻井防斜的经验,设计了满眼防斜钻具组,终孔深度700.75米,孔斜2°30′。取得了良好的效果。现对有关情况作一介绍和进行一些探讨。
Hole HG_1 is the first standard hole in the Bohai Sea tide exploration project in Tianjin. Hole depth of 700 meters design, aperture not less than 130 mm. Final hole slope of not more than 3 °. A single hole oblique one, it greatly exceeded my team 700 meters deep hole 8 ° 30 ’the best level in history. Therefore, after analyzing the pros and cons of ordinary anti-skew methods, we have designed a full-blind anti-skew drill set with a final hole depth of 700.75 meters and a hole angle of 2 ° 30 ’with reference to the anti-skew experience of oil drilling. got a good result. Now I will introduce the situation and conduct some discussions.