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在当前技术条件下,钻孔都或多或少的发生弯曲,既有顶角弯曲,也有方位角弯曲.通常讲钻孔弯曲,是指钻孔偏离设计方向与位置.钻孔的弯曲,包括开孔不正或井口管按得不正引起整个钻孔偏离设计方向.也包括开孔是正的.而在钻进过程中钻孔自身逐渐发生弯曲.本文主要谈金刚石钻进时钻孔的弯曲和预防.某矿区自1970年下半年开始使用金刚石钻进,到74年上半年止已完工的钻孔有50多个.钻孔所遇到的主要地层为:
Under the current technical conditions, the bores are more or less bent, with both the apex angle and azimuthal bending. Generally speaking, the bored bending refers to the deviation from the design direction and position of the bored hole, including the bending of the bored hole, including The hole is not right or the wellhead tube is not properly pressed to cause the entire drilling deviate from the design direction. Also includes the hole is positive. And in the drilling process gradually bending itself. This article mainly about drilling and drilling of diamond bending and prevention A mine has been drilling diamonds since the second half of 1970 and has completed more than 50 boreholes by the first half of the year of 74. The major formations encountered during drilling are: