基于全角半距法钻孔偏斜距离计算公式的推导

详细信息

刊出日期: 2014-08-10

Deduction of Formula about Borehole Deflection Distance Based on Full-angle-half-distance Method

Publish Date: 10 August 2014

摘要: 钻孔弯曲的偏斜距离是地质钻探工程质量的一项重要指标。介绍了钻孔弯曲及钻孔弯曲计算模型中最常用的全角半距法。通过基于三维坐标系的钻孔轴线上各测点的空间位置的描述,借助于立体几何的方法,推导出钻孔中任一深度处偏斜距离的计算公式,讨论了顶角和方位角的变化对偏斜距离的影响程度,给出了一计算实例。
- 地质钻探 /
- 钻孔偏斜距离 /
- 全角半距法 /
- 计算公式
Abstract: Borehole bending deflection distance is an important quality index in geological drilling project.Borehole ben-ding and full-angle-half-distance method is introduced in this paper, which is most commonly used in borehole bending cal-culation model.By the describtion of the spatial position of each measuring point on borehole axis on basis of three-dimen-sional coordinate system and by means of three-dimensional geometric method, a formula about deflection distance in any depth of borehole is derived, and the influence degree of vertex angle and azimuth’ s change to the deflection distance is discussed with a calculation example.
- geological drilling /
- borehole deflection distance /
- full-angle-half-distance method /
- calculation formula