新型随钻电磁波阵列补偿传播电阻率测井仪器性能仿真
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摘要
针对随钻电磁波阵列补偿传播电阻率仪结构,开发了三维矢量有限元素法正演仿真软件,并通过第三方软件的仿真结果对比验证了算法的正确性。在此基础上考察了ACPR仪器的探测特性以及各种环境因素的影响,包括仪器探测深度、纵向分层能力以及井眼环境影响、地层各向异性影响等,为后续测井资料解释奠定了理论基础。通过搭建实验平台构造地层模型,仪器测量数据与软件仿真结果相对误差小于5.0%,说明ACPR仪器电路设计合理。现场测试数据对比表明,ACPR仪器相位差电阻率和双侧向电阻率在高电阻率层段仍然具备高度一致性,显示该仪器的可靠性和适用性。
For the new electromagnetic resistivity tool structure developed by COSL,the numerical simulation software is developed based on 3 D vector finite element method.The accuracy of the algorithm is verified by comparison with the simulation results of the third-party software.On the basis of this,researching the investigating characteristics and the influence of various environmental factors,including the depth of the investigation,the vertical resolution,the wellbore effect,the formation anisotropy,etc.The simulation results enhance the understanding of the ACPR detection characteristics,and establishe a solid theoretical basis for the interpretation of logging data.By constructing the experimental platform to construct the formation model,the relative error of the instrument measurement data and the software simulation result is less than 5.0%,which indicates the accuracy of ACPR circuit design.The comparison of the field test data shows that the phase difference resistivity of the ACPR and the dual lateral resistivity are still highly consistent in the high resistivity interval,which shows the reliability and applicability of the ACPR instrument.
For the new electromagnetic resistivity tool structure developed by COSL,the numerical simulation software is developed based on 3 D vector finite element method.The accuracy of the algorithm is verified by comparison with the simulation results of the third-party software.On the basis of this,researching the investigating characteristics and the influence of various environmental factors,including the depth of the investigation,the vertical resolution,the wellbore effect,the formation anisotropy,etc.The simulation results enhance the understanding of the ACPR detection characteristics,and establishe a solid theoretical basis for the interpretation of logging data.By constructing the experimental platform to construct the formation model,the relative error of the instrument measurement data and the software simulation result is less than 5.0%,which indicates the accuracy of ACPR circuit design.The comparison of the field test data shows that the phase difference resistivity of the ACPR and the dual lateral resistivity are still highly consistent in the high resistivity interval,which shows the reliability and applicability of the ACPR instrument.
引文
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[6]李飞虎,张中庆,王卓远.用矢量棱边元素法模拟三维感应测井响应[J].复旦大学(自然科学版),2009,48(5):560-566.
[7]仵杰,段雁超,李凡,等.基于COMSOL仿真软件的阵列感应测井偏心响应计算方法[J].测井技术,2012,36(4):357-360.
[8]邵才瑞,张鹏飞,王正楷.随钻电磁波测井地层产状因素响应特征三维数值模拟[J].地球物理学进展,2017,32(1):236-242.
[9]李虎.复杂介质随钻方位电磁波测井数值模拟与应用基础研究[D].青岛:中国石油大学,2013.
[10]张庚骥.电法测井(下册)[M].北京:石油工业出版社,1986.
[11]孙向阳,聂在平,赵延文,等.用矢量有限元方法模拟随钻测井仪在倾斜各向异性地层中的电磁响应[J].地球物理学报,2008,51(5):1600-1607.
[2]ANDERSON B,et al.Modeling 3DEffects on 2MHz LWD Resistivity Logs[C]∥Transactions of SPWLA38th Annual Logging Symposium,1997.
[3]Sperry-Sun,a Halliburton Company.Electromagnetic Wave Resistivity(EWR)Sensor Manual[Z].2003.
[4]高杰,辛秀艳,陈文辉,等.随钻电磁波阵列补偿传播电阻率测井之电阻率转化方法与研究[J].测井技术,2008,32(6):503-507.
[5]张中庆,穆林雪,张雪,等.矢量有限元素法在随钻电阻率测井模拟中的应用[J].中国石油大学学报(自然科学版),2011,35(4):64-71.
[6]李飞虎,张中庆,王卓远.用矢量棱边元素法模拟三维感应测井响应[J].复旦大学(自然科学版),2009,48(5):560-566.
[7]仵杰,段雁超,李凡,等.基于COMSOL仿真软件的阵列感应测井偏心响应计算方法[J].测井技术,2012,36(4):357-360.
[8]邵才瑞,张鹏飞,王正楷.随钻电磁波测井地层产状因素响应特征三维数值模拟[J].地球物理学进展,2017,32(1):236-242.
[9]李虎.复杂介质随钻方位电磁波测井数值模拟与应用基础研究[D].青岛:中国石油大学,2013.
[10]张庚骥.电法测井(下册)[M].北京:石油工业出版社,1986.
[11]孙向阳,聂在平,赵延文,等.用矢量有限元方法模拟随钻测井仪在倾斜各向异性地层中的电磁响应[J].地球物理学报,2008,51(5):1600-1607.