Investigation of the impact of voxel image subvolume size upon computed petrophysical properties of carbonate rocks imaged using X-ray computed microtomography

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Over the past decade, significant advancements have been made in the prediction of the petrophysical properties of reservoir rocks using x-ray micro CT based digital rock physics (DRP) workflows. Such techniques now enable static and dynamic petrophysical properties, such as bulk and effective porosity, single phase permeability, capillary pressure and relative permeability to be derived directly from pore-scale images of rocks. The derivation of a comprehensive suite of petrophysical properties previously required time consuming laboratory analyses using standard core plugs, typically derived from cores, negating the use of smaller rock fragments (i.e. drill cuttings) which typically provide more representative coverage of penetrated units along the length of the well bore. In this study, the impact of subvolume dimension upon image based predictions of porosity and permeability have been investigated, in order to provide improved insights into subvolume selection in carbonate rocks. Two lithologies (Estaillades and Ketton Limestone) displaying different degrees of pore-scale heterogeneity were studied. A pore network extraction routine and a single phase simulation code have been used to estimate permeability, with voxel counts used to establish porosity. Calculations are repeated within progressively dilated kernels, enabling the statistical homogenization of petrophysical properties with increasing subvolume size to be assessed.

Original languageEnglish
Title of host publication2nd EAGE Workshop on Well Injectivity and Productivity in Carbonates
PublisherEuropean Association of Geoscientists and Engineers, EAGE
Volume2017-December
ISBN (Electronic)9789462822382
Publication statusPublished - 1 Jan 2017
Event2nd EAGE Workshop on Well Injectivity and Productivity in Carbonates 2017 - Doha, Qatar
Duration: 10 Dec 201712 Dec 2017

Other

Other2nd EAGE Workshop on Well Injectivity and Productivity in Carbonates 2017
CountryQatar
CityDoha
Period10/12/1712/12/17

Fingerprint

carbonate rock
Carbonates
Rocks
permeability
X rays
porosity
Porosity
rock
dynamic property
capillary pressure
reservoir rock
prediction
Lithology
Capillarity
lithology
Limestone
physics
limestone
well
Physics

ASJC Scopus subject areas

  • Geotechnical Engineering and Engineering Geology
  • Geology

Cite this

Seers, T., Al Yafei, N., & Khan, T. (2017). Investigation of the impact of voxel image subvolume size upon computed petrophysical properties of carbonate rocks imaged using X-ray computed microtomography. In 2nd EAGE Workshop on Well Injectivity and Productivity in Carbonates (Vol. 2017-December). European Association of Geoscientists and Engineers, EAGE.

Investigation of the impact of voxel image subvolume size upon computed petrophysical properties of carbonate rocks imaged using X-ray computed microtomography. / Seers, Thomas; Al Yafei, Nayef; Khan, T.

2nd EAGE Workshop on Well Injectivity and Productivity in Carbonates. Vol. 2017-December European Association of Geoscientists and Engineers, EAGE, 2017.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Seers, T, Al Yafei, N & Khan, T 2017, Investigation of the impact of voxel image subvolume size upon computed petrophysical properties of carbonate rocks imaged using X-ray computed microtomography. in 2nd EAGE Workshop on Well Injectivity and Productivity in Carbonates. vol. 2017-December, European Association of Geoscientists and Engineers, EAGE, 2nd EAGE Workshop on Well Injectivity and Productivity in Carbonates 2017, Doha, Qatar, 10/12/17.
Seers T, Al Yafei N, Khan T. Investigation of the impact of voxel image subvolume size upon computed petrophysical properties of carbonate rocks imaged using X-ray computed microtomography. In 2nd EAGE Workshop on Well Injectivity and Productivity in Carbonates. Vol. 2017-December. European Association of Geoscientists and Engineers, EAGE. 2017
Seers, Thomas ; Al Yafei, Nayef ; Khan, T. / Investigation of the impact of voxel image subvolume size upon computed petrophysical properties of carbonate rocks imaged using X-ray computed microtomography. 2nd EAGE Workshop on Well Injectivity and Productivity in Carbonates. Vol. 2017-December European Association of Geoscientists and Engineers, EAGE, 2017.
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