Determination of formation dip and strike from transient LWD electromagnetic measurements
https://doi.org/10.18303/2619-1563-2021-2-36
Abstract
An original method has been developed for estimating formation dip and strike from transient induction LWD data, based on focusing in the time domain. The focusing consists in decomposing the measured signals into a time series and diagonalizing the matrix of focused magnetic field components. We have implemented the method and comprehensively tested it in horizontally-layered media used for LWD data inversion to solve geosteering problems and evaluate the formation resistivity. Estimates of the angles contribute to reliable geosteering when choosing a direction of drilling, as well as when inverting data for a complex earth model. A significant reduction in the resource intensity of inversion and model equivalence is achieved by reducing the number of determined parameters.
About the Authors
M. N. Nikitenko
Trofimuk Institute of Petroleum Geology and Geophysics SB RAS
Russian Federation
Russian Federation
Koptyug Ave., 3, Novosibirsk, 630090
M. B. Rabinovich
BP, Westlake Park Blvd, 501, Houston, TX 77079
United States
United States
M. V. Sviridov
ROGII, Park Ten Place, 16000, Houston, TX 77084
United States
United States
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Review
For citations:
Nikitenko M.N., Rabinovich M.B., Sviridov M.V. Determination of formation dip and strike from transient LWD electromagnetic measurements. Russian Journal of Geophysical Technologies. 2021;(2):36-48. (In Russ.) https://doi.org/10.18303/2619-1563-2021-2-36
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