Method of Magnetic Interference Correction in Survey with Magnetic MWD
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摘要: 为提高磁力随钻测量的井眼轨迹精度，研究了随钻测量磁干扰校正方法。利用随钻测量参数，计算井斜角、工具面角和方位角；采取360°旋转钻柱记录、分析径向磁力计读数的方法，纠正磁热点引起的径向磁干扰；采用循环迭代的方法，纠正钻柱磁化引起的轴向磁干扰。通过仿真测量参数、磁干扰数据和地磁参数，应用磁干扰校正方法计算得到校正方位角，并与实测方位角、真实方位角进行了对比，结果发现，在其他井眼参数保持不变的条件下，井斜角接近90°或方位角接近90°、270°时，实测方位角误差变大；井斜角接近0°或方位角接近0°、180°时，实测方位角误差变小；真实方位角为0°~180°时，实测方位角比真实方位角小，真实方位角为180°~360°时，实测方位角比真实方位角大；井眼轨迹接近水平东或水平西方向时，轴向磁干扰的校正效果最差。磁干扰校正方法能够提高方位角测量精度，减少无磁钻铤长度。Abstract: In order to improve accuracy of well trajectory measured by MWD,magnetic interference correction was studied.Inclination angle,tool-face and azimuth angle were worked out when surveying with magnetic MWD.Cross-axial magnetic interference originating from magnetic hot spots in the NMDC was corrected by rotating drillstring 360° and analyzing cross-axial magnetometer data.Axial magnetic interference originates from the magnetization of ferromagnetic portions of the drill string was corrected by loop iteration method.A series of conclusions were reached by a group of simulation data including survey data,magnetic interference data and geomagnetic parameters:the error of measured azimuth was larger when inclination approaches 90° or azimuth approaches 90°,270°;the error of measured azimuth was smaller when inclination approaches 0° or azimuth approaches 0°,180°;the measured azimuth was smaller than true azimuth when true azimuth was between 0° and 180°;the measured azimuth was larger than true azimuth when true azimuth was between 180° and 360°;the effect of correcting axial magnetic interference was poorer when trajectory approaches horizontal west or east and the correcting algorithm was stable.
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[1] Russell M K,Russell A W.Surveying of boreholes:US,4163324[P].1979-08-07.
[2] von Dongen,Johannes C M,Maekiaho Leo B.Method for determining the azimuth of a borehole:US,4682421[P].1987-07-28.
[3] Russell A W.Method of determining the orientation of a surveying instrument in a borehole:US,4819336[P].1989-04-11.
[4] Williamson H S.Accuracy prediction for directional measurement while drilling[J].Journal of Petroleum Technology,1981,33(12):2338-2350.
[5] 王锐,崔朋波,刘培军.MWD独立误差源确定分析[J].特种油气藏,2011,18(5):120-123. Wang Rui,Cui Pengbo,Liu Peijun.Determinative analysis of MWD independent error sources[J].Special Oil Gas Reservoirs,2011,18(5):120-123. [6] Brooks A G.Method of correcting axial and transverse error components in magnetometer readings during wellbore survey operation:US,5623407[P].1997-04-22.
[7] Brooks A G.Method for magnetic survey calibration and estimation of uncertainty:US,6179067B1[P].2001-01-30.
[8] Brooks A G.Multi-station analysis of magnetic surveys:US,8280638B2[P].2010-08-19.
[9] Russell A W,Roesler R F.Reduction of nonmagnetic drill collar length through magnetic azimuth correction technique[R].SPE 13476,1985.
[10] 乔传尚.YST-48R型MWD仪器的Bt值异常分析与判断[J].石油仪器,2011,25(4):23-25. Qiao Chuanshang.Measurement and analysis of abnormal Bt value of YST-48R MWD[J].Petroleum Instrument,2011,25(4):23-25. [11] 欧阳奘儒.无磁钻铤磁性对罗盘测量误差的影响[J].石油钻采工艺,1991,13(1):25-31. Ouyang Zangru.Magnetic properties of nonmagnetic drill collars and their relation to survey compass error[J].Oil Drilling Production Technology,1991,13(1):25-31. [12] Edwards J,Pernet F,Jakeman S V J.Magnetic properties of nonmagnetic drill collars and their relation to survey compass error[J].Geoexploration,1979,17(3):229-241.
[13] 张苏,管志川,王建云,等.邻井套管对井斜方位角的影响[J].石油钻探技术,2013,41(6):51-55. Zhang Su,Guan Zhichuan,Wang Jianyun,et al.Impact of casing on adjacent well azimuth[J].Petroleum Drilling Techniques,2013,41(6):51-55. [14] 徐涛,温东,孙晓磊.基于加速度计和磁强计的方位测量与校正技术研究[J].仪器仪表学报,2009,30(10):2018-2022. Xu Tao,Wen Dong,Sun Xiaolei.Research on azimuth measurement and correction technique with accelerometer and magnetometer[J].Chinese Journal of Scientific Instrument,2009,30 (10):2018-2022. [15] 罗武胜,徐涛,杜列波.基于加速度计和磁强计的定向钻进姿态测量及方位角校正[J].国防科技大学学报,2007,29(1):106-110. Luo Wusheng,Xu Tao,Du Liebo.Directional drilling attitude measurement and azimuth correction with accelerometers and magnetometers[J].Journal of National University of Defense Technology,2007,29(1):106-110. -
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