Predicting relative-permeability curves directly from rock images

Dmitriy Silin*, Tadeusz Patzek

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

21 Scopus citations

Abstract

The objective of this study is determination of relative permeability curves from an analysis of the pore space geometry. The main assumptions are that the capillary pressure determines the fluid distribution and the rock is water-wet. Maximal inscribed spheres computations characterize the portion of the pore space occupied by each fluid at a given saturation. Numerical solution of the Stokes equations evaluates the pore-scale flow field, which is averaged to estimate the permeability to each fluid. The computed relative permeability curves are in good agreement with published data. The input for the proposed procedure can be either a computer tomography image of a sample of the rock of interest, or a computer-generated image based on depositional simulations. Partitioning of the entire domain into parts significantly improves the convergence and makes feasible implementation of the computational procedure on a desktop computer. The stability of the results with respect to the choice of computational parameters makes the proposed method suitable for routine applications. The model admits generalizations relaxing the requirement of water wetness of the rock. This model can be applied to evaluate the evolution of the rock flow properties under deformation, damage, mineral dissolution and precipitation.

Original languageEnglish (US)
Title of host publicationSociety of Petroleum Engineers - SPE Annual Technical Conference and Exhibition 2009, ATCE 2009
Pages4051-4070
Number of pages20
StatePublished - Dec 1 2009
EventSPE Annual Technical Conference and Exhibition 2009, ATCE 2009 - New Orleans, LA, United States
Duration: Oct 4 2009Oct 7 2009

Publication series

NameProceedings - SPE Annual Technical Conference and Exhibition
Volume6

Other

OtherSPE Annual Technical Conference and Exhibition 2009, ATCE 2009
CountryUnited States
CityNew Orleans, LA
Period10/4/0910/7/09

ASJC Scopus subject areas

  • Fuel Technology
  • Energy Engineering and Power Technology

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