TY - GEN

T1 - Interpretation of IP-Affected 3D TEM data

AU - Kompaniets, S. V.

AU - Kozhevnikov, N. O.

AU - Murzina, E. V.

PY - 2017

Y1 - 2017

N2 - The TEM method is of broad use in oil and gas exploration in southern Siberian Craton, with about ten thousand soundings acquired yearly. The multi-offset TEM systems with 500 – 600 m square loops, which have been in use recently, can reveal also induced polarization (IP). IP-affected TEM data make about 75 % of the total amount of transient responses recorded in the area. The IP effects can be estimated qualitatively from difference between the right-hand branches of apparent resistivity curves obtained with in-loop and off-loop configurations. Processing of these data consists of several steps. First, TEM responses at reference points within the study area are inverted in a semi-automatic mode with IP effects included in terms of the Cole-Cole model. The polarization parameters of the resulting reference models are interpolated over the whole area with regard to difference between in-loop and off-loop responses. The equivalence is reduced by locking two out of four Cole-Cole parameters (most often c and τ).

AB - The TEM method is of broad use in oil and gas exploration in southern Siberian Craton, with about ten thousand soundings acquired yearly. The multi-offset TEM systems with 500 – 600 m square loops, which have been in use recently, can reveal also induced polarization (IP). IP-affected TEM data make about 75 % of the total amount of transient responses recorded in the area. The IP effects can be estimated qualitatively from difference between the right-hand branches of apparent resistivity curves obtained with in-loop and off-loop configurations. Processing of these data consists of several steps. First, TEM responses at reference points within the study area are inverted in a semi-automatic mode with IP effects included in terms of the Cole-Cole model. The polarization parameters of the resulting reference models are interpolated over the whole area with regard to difference between in-loop and off-loop responses. The equivalence is reduced by locking two out of four Cole-Cole parameters (most often c and τ).

UR - http://www.scopus.com/inward/record.url?scp=85048684345&partnerID=8YFLogxK

U2 - 10.3997/2214-4609.201702290

DO - 10.3997/2214-4609.201702290

M3 - Conference contribution

AN - SCOPUS:85048684345

T3 - Geomodel 2017 - 19th Science and Applied Research Conference on Oil and Gas Geological Exploration and Development

BT - Geomodel 2017 - 19th Science and Applied Research Conference on Oil and Gas Geological Exploration and Development

PB - European Association of Geoscientists and Engineers, EAGE

T2 - 19th Science and Applied Research Conference on Oil and Gas Geological Exploration and Development, Geomodel 2017

Y2 - 11 September 2017 through 14 September 2017

ER -