首页>
外国专利>
Rotating Magnetic Field Range Finder and its Measurement Method for Relative Separation Between Drilling Wells
Rotating Magnetic Field Range Finder and its Measurement Method for Relative Separation Between Drilling Wells
展开▼
机译:井间相对分离的旋转磁场测距仪及其测量方法
展开▼
页面导航
摘要
著录项
相似文献
摘要
A rotating magnetic field rangefinder for measuring relative distance in drilling, comprising a permanent magnet steel drill collar (1), an underground detector (2) and a ground interface box (3). The permanent magnet steel drill collar (1) is fixed to the rear part of a drill bit and rotates together with the drill bit to generate a rotating magnetic field to provide a magnetic field signal source. The underground detector (2) comprises two tri-axial fluxgates and three accelerometers. The ground interface box (3) is used for processing the obtained data, and powering the underground detector. The permanent magnet steel drill collar (1) is an obliquely arranged one or a perpendicularly-and-parallelly assembled one. A measuring method for magnetic range measurement is also disclosed.
展开▼