R-factor recovery via Geertsma’s pressure inversion assisted by engineering concepts

Wong Ming Yi, Colin MacBeth

Research output: Contribution to conferencePaperpeer-review

4 Citations (Scopus)


A technique is developed for a North Sea chalk reservoir to estimate the Hatchell-RØste R factors using a reservoir engineering constraint. This provides a way of defining the uncertainty on the R values, given the range of mechanical properties for the field of interest. In our case study the average R for the reservoir and overburden appears to be in the range 7 to 22. R factors are also calculated for regions of pressure relaxation and drawdown identified in the field, and the results confirm the current understanding determined by laboratory experiment and previous studies that the magnitude varies as a function of strain polarity, with the asymmetry being at most a factor of three. These results are validated with full geomechanical modelling followed by time shift modelling, showing that the observed time shifts cannot be created unless this asymmetry is present
Original languageEnglish
Publication statusPublished - 31 May 2016
Event78th EAGE Conference and Exhibition 2016 : Efficient Use of Technology - Unlocking Potential - Vienna, Austria
Duration: 30 May 20162 Jun 2016


Conference78th EAGE Conference and Exhibition 2016
Internet address


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