YANG Ling, DANG Bo, LIU Rong, et al. Modeling and simulation of transient electromagnetic detecting sensor in relief well[J]. 2018, 37(11): 31-33+37. DOI: 10.13873/j.1000-9787(2018)11-0031-03.
In order to improve localization precision of blowout well
the transient electromagnetic(TEM) method model for relief well detection is established.On the basis of the method of spatial geometric localization
the factors which influence the detection performance of TEM sensor in relief well are simulated and analyzed using Comsol Multiphysics simulation software. The results demonstrate that the emission current and the number of turns of receiving and transmitting coils are proportional to the secondary eddy-current field strength. The smaller the distance between the blowout well casing and electro-magneto probe is
the larger the amplitude of the induced electromotive force(EMF) received by the receiving coils will be; and thus the distance and location information inversed from the EMF can be more accurate. The research results can help to improve and optimize the TEM sensor
which is beneficial for accurate positioning of the blowout well.