LI T, ZHAO N, QIN C, et al.On the magnetotelluric one-dimensional time-lapse inversion[J].Journal of Henan Polytechnic University(Natural Science) ,2023,42(6):61-68.

doi:10.16186/j.cnki.1673-9787.2021050122

Received:2021/05/27

Revised:2021/10/07

Published:2023/11/25

On the magnetotelluric one-dimensional time-lapse inversion

LI Tao1, ZHAO Ning1,2, QIN Ce1, MI Xiaoli3

1.School of Physical and Electrical Engineering，Henan Polytechnic University，Jiaozuo  454000，Henan，China;2.State Key Laboratory Cultivation Base for Gas Geology and Gas Control，Henan Polytechnic University，Jiaozuo  454000，Henan，China;3.Bureau of Geophysical Prospecting Inc.，China National Petroleum Corporation，Zhuozhou  072750，Hebei，China

Abstract:In response to the problem of susceptibility to environmental interference and failure to consider time continuity in the magnetotelluric inversion method，in this paper，time constraint item was added after traditional objective function to carry out the research of time-lapse magnetotelluric simultaneous inversion method based on Tikhonov regularization theory，then the results of independent inversion and simultaneous inversion were compared through panel data model.The results shows both inversion methods can reflect the position information of anomaly body，but the simultaneous inversion method can effectively improve the effect of missing data on inversion results，and the change process of reservoir resistivity is more continuous.It is found that more accurate inversion results can be obtained through the utilization of observation data in each time step in simultaneous inversion method.

Key words:magnetotelluric;time-lapse inversion;data missing;regularization factor;monitoring technology

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