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2 results

  • 8 - Microseismic Technology

  • Edited by Hamish Wilson, Keith Nunn, Matt Luheshi
  • Book:
    Integration of Geophysical Technologies in the Petroleum Industry
    Published online:
    25 November 2021
    Print publication:
    16 December 2021, pp 272-317

  • Summary

    Microseismic monitoring, an extension of classical earthquake seismology, has found many applications in the resource industry. In particular, it has become an essential tool for observing the results of hydraulic fracturing on unconventional reservoirs, without which the reservoirs are not economic. Such monitoring allows for direct observation of the effectiveness of the well treatment, for the selection of improved treatment parameters, and contributes to the overall field development plan. Data from microseismic monitoring contributes to the understanding of the stimulated reservoir model, the drainage volume of individual wells, estimated production, production interference and the stress in the reservoir. This chapter presents an introduction to how these data are acquired, analysed and integrated with other data to affect a successful well completion and field development program.

  • Comparison of discrete fracture network and equivalent continuum simulations of fluid flow through two-dimensional fracture networks for the DECOVALEX–2011 project

  • C. T. O. Leung, A. R. Hoch, R. W. Zimmerman
  • Journal:
    Mineralogical Magazine / Volume 76 / Issue 8 / December 2012
    Published online by Cambridge University Press:
    05 July 2018, pp. 3179-3190
    • Article
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  • Fluid flow through a two-dimensional fracture network has been simulated using a discrete fracture model. The computed field-scale permeabilities were then compared to those obtained using an equivalent continuum approach in which the permeability of each grid block is first obtained by performing fine-scale simulations of flow through the fracture network within that region. In the equivalent continuum simulations, different grid-sizes were used, corresponding to N by N grids with N = 10, 40, 100 and 400. The field-scale permeabilities found from the equivalent continuum simulations were generally within 10% of the values found from the discrete fracture simulations. The discrepancies between the two approaches seemed to be randomly related to the grid size, as no convergence was observed as N increased. An interesting finding was that the equivalent continuum approach gave accurate results in cases where the grid block size was clearly smaller than the 'representative elementary volume'.