A deep learning approach to the inversion of borehole resistivity measurements

M. Shahriari, D. Pardo, A. Picon, A. Galdran, J. Del Ser, C. Torres-Verdín

Producción científica: Contribución a una revistaArtículorevisión exhaustiva

44 Citas (Scopus)

Resumen

Borehole resistivity measurements are routinely employed to measure the electrical properties of rocks penetrated by a well and to quantify the hydrocarbon pore volume of a reservoir. Depending on the degree of geometrical complexity, inversion techniques are often used to estimate layer-by-layer electrical properties from measurements. When used for well geosteering purposes, it becomes essential to invert the measurements into layer-by-layer values of electrical resistivity in real time. We explore the possibility of using deep neural networks (DNNs) to perform rapid inversion of borehole resistivity measurements. Accordingly, we construct a DNN that approximates the following inverse problem: given a set of borehole resistivity measurements, the DNN is designed to deliver a physically reliable and data-consistent piecewise one-dimensional layered model of the surrounding subsurface. Once the DNN is constructed, we can invert borehole measurements in real time. We illustrate the performance of the DNN for inverting logging-while-drilling (LWD) measurements acquired in high-angle wells via synthetic examples. Numerical results are promising, although further work is needed to achieve the accuracy and reliability required by petrophysicists and drillers.
Idioma originalInglés
Páginas (desde-hasta)971-994
Número de páginas24
PublicaciónComputational Geosciences
Volumen24
N.º3
DOI
EstadoPublicada - 13 abr 2020

Palabras clave

  • Logging-while-drilling (LWD)
  • Resistivity measurements
  • Real-time inversion
  • Deep learning
  • Well geosteering
  • Deep neural networks

Project and Funding Information

  • Funding Info
  • Gobierno Vasco, ELKARTEK ARGIA KK-2019/00068

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