This work is conducted at the Trofimuk Institute of Petroleum Geology and Geophysics SB RAS. During a press conference held at the TASS Information Agency in Novosibirsk, specialists from the Laboratory of Natural Geophysical Fields at IPGG SB RAS spoke about a high-resolution local geomagnetic model DIF-1 designed and developed at the Institute.
This model ensures high accuracy of well placement during directional and horizontal drilling. Furthermore, the need to develop such models is driven by high well spacing density, and by the effect of Western sanctions on drilling operations in Russia.
Petr Dyadkov, PhD (geol.-mineral.), head of the Laboratory of Natural Geophysical Fields, says that the DIF 1 model is comparable to the advanced foreign counterparts. The model development involved several steps.
First, historical geological data are collected for the oil-field area, which is followed by analysis of available maps of the anomalous magnetic field; in the absence of such maps, aeromagnetic survey using unmanned aerial vehicles (UAVs) needs to be conducted.
The modeling proper involves development of a geomagnetic model of the Earth's crust in the oilfield area by solving 3D inverse problems of magnetic exploration. After that, an integrated DIF-1 model is constructed based on both the crustal magnetic model and the model of the main magnetic field of the Earth, allowing for its secular variation.
In the final stage, the model is verified to assess its quality and its parameters are refined based on high-precision in-field geomagnetic measurements.
Published by IPGG Press Service
Photos courtesy of TASS Information Agency in Novosibirsk
For more detail see http://www.ipgg.sbras.ru/en/news/v-ingg-sozdali-lokalnuyu-geomagnitnuyu-model-25042025
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