水平定向钻进随钻测量及方位校正研究  

Reasearch of measurement while drilling and azimuth correction for horizontal directional drilling

作　　者：徐涛[1] 罗武胜[1] 杜列波[1] 吕海宝[1] 

机构地区：[1]国防科技大学机电工程与自动化学院,长沙410073

出　　处：《仪器仪表学报》2007年第2期236-240,共5页Chinese Journal of Scientific Instrument

基　　金：国家863基金(2003AA430120)资助项目

摘　　要：根据水平定向钻进角度随钻测量的要求,描述了用三轴加速度计与三轴磁强计测量地下钻头姿态—方位角、倾斜角和工具面向角的方法,针对由于钻具铁磁性材料造成干扰磁场对方位测量引入的误差,提出了利用当地地磁场进行校正的方法,详细分析了校正原理,同时给出校正步骤和仿真结果。结果表明,这种校正方法能够在不更换钻具的情况下获得准确的方位角,因此可以大大减少无磁钻铤的长度,节省钻进成本。According to the demands for attitude an approach to determine the pitch, the roll and measurement in horizontal directional drilling , this paper introduces the azimuth using three mutual orthogonal accelerometers and magnetometers. In order to compensate for the effects of interference magnetic field generated from the ferromagnetism of the drill, a correction method based on using local geomagnetic field is proposed and the correction principle is analyzed in great detail. The correction process and simulation results are presented. Results show that the proposed correction method can determine accurate azimuth using a measurement instrument located in a relatively short non-magnetic drill collar, so it minimizes the length of non-magnetic drill collar and saves drilling costs greatly.

关 键 词：水平定向钻 姿态测量 随钻测量 方位角 方位校正 磁强计 

分 类 号：P634.7[天文地球—地质矿产勘探]