第33卷第12期 2012年12月
仪器仪表学报 ChineseJournal of Scientific Instrument
全姿态光纤陀螺井眼轨迹连续测量仪研究
任春华，李兵，赵幸子，廖冠，李静伟
（重庆大学光电技术及系统教育部重点实验室重庆400030）
Vol. 33 No. 12 Dec.2012
摘要：在油气井井眼轨迹测量中，针对传统磁通门磁力计无法在套管井、铁矿并等受磁场干扰或无磁环境下测量的问题，研作为核心传感器，为克服高温恶劣环境对仪器测量精度的影响，提出了加装保温瓶、置人吸热材料、对传感器采用小波神经网络进行温度漂移辨识与补偿的方案。给出了系统方案、轨迹测量算法、漂移误差估计与补偿算法。测试结果表明：该系统倾角测 000080
等环境下的轨迹连续测量间题，其全姿态测量特点使其亦适用于日益增多的水平并测量，具有广阔的应用前景。关键调：轨迹测量；全姿态；无磁环境；光纤陀螺；小口径
中图分类号：TN98TH76
文献标识码：A
国家标准学科分类代码：440.45
Study on all-attitudefiber opticgyro well-hole trajectory
continuousmeasuringinstrument
Ren Chunhua, Li Bing, Zhao Xingzi, Liao Guan, Li Jingwei(Key Laboratory of Opto-Electronic Technology & System,Ministry of Education,
Chongqing University, Chongqing 400030, China)
Abstract: In the field of oil and gas well hole trajectory continuous measurement, aiming at the problem that traditional fluxgate magne tometer can not make measurement effectively in interference magnetic field or nonmagnetic environment like iron mine and etc. , a new type of small caliber all-attitude well-hole trajectory continuous measurement instrument is developed. The system adopts the new devel-oped small caliber precision three-axis integrated fiber optic gyroscope and three quartz accelerometers as the core sensors. To overcome the influence of high-temperature harsh environment, three key technologies are proposed, which are adopting thermos, adding heat-ab sorbing material and using wavelet neural network to identify and compensate the temperature drift. The system scheme, trajectory meas urement algorithm and temperature drift error estimation & compensation algorithm are given in this paper, Test results show that the measurement range of incline angle is 0° ~ 180° and the measurement range of azimuth angle is 0° ~ 360°;the azimuth precision is supe rior to ±3° and incline angle precision is superior to ± O. 15°, The instrument can effectively solve the well-hole trajectory continuous measurement problem in non-magnetic field or interference magnetic field environment, The characteristic of all-attitude measurement is suitable for the increasing horizontal well measurement and has broad application prospect.
Key words: trajectory measurement; all-attitude;nonmagnetic environment; fiber gyro; small caliber
油井分析与判断，并眼轨迹需要测量的姿态信息包括并
1引言
油气并方尚勘探、倾斜测量可以给出钻孔或并孔走向在三维空间的确定数据，能够直观显示并眼情况进行
收稿日期：2011-01
Received Date:2011-01
斜方位角、井斜角、标准极板方位角和工具面角等。随着世界石油资源的日益紧张，并眼轨还的精确测量在准气井开发中越来越显示出其重要性，而传统井眼轨迹连续测量仪主要采用磁通门和微电子机械系统（micro
*基金项目：重庆市自然科学基金（CSTC2010BB4223）、中央高校基本科研专项基金（CDJZR11120007）资助项目