Neutron scattering study of strain behaviour of porous rocks subjected to heating and unconfined uniaxial compression

Nadimul Haque Faisal, Reza Sanaee, Rao Martand Singh, John Murray, Abbie McLaughlin, David Healy, Tung Lik Lee

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Abstract

Neutron scattering (at ENGIN-X) was used to examine strain distributions in two hydrocarbon reservoir rock types (i.e. sandstone and chalk) under uniaxial stress (up to 35 MPa) at temperature as high as 70 °C to utilise the advantages of neutron scattering to draw a detailed picture of the structural evolution in the porous rock core plugs subjected to heating. Each sample was cylindrical in shape (i.e. 38.1 mm diameter and 48 mm length). The corresponding strain free lattice parameter (d 0) for each sample at each measurement point at 5 MPa compressive stress condition were obtained by testing at 25°C. Various microstructural and material characterisation were carried out using X-ray diffraction, energy dispersive spectroscopy and scanning electron microscopy. Comparison of Rietveld refinement for multiple peak of crystalline phases in both samples were made. Results are discussed in terms of the influence of temperature and compressive stress on the residual strain profile along radial direction of cylindrical rock sample. It was found that the sandstone sample has significantly high strain bearing capability when compared with the chalk, however, the overall strain profile from the central axis in the radial direction looked very similar.

Original languageEnglish
Article number012011
JournalJournal of Physics: Conference Series
Volume1106
Issue number1
Early online date5 Nov 2018
DOIs
Publication statusPublished - 2018
Event9th International Conference on Modern Practice in Stress and Vibration Analysis, MPSVA 2018 - Cambridge, United Kingdom
Duration: 2 Jul 20184 Jul 2018

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neutron scattering
rocks
heating
chalk
sandstones
strain distribution
plugs
profiles
lattice parameters
hydrocarbons
scanning electron microscopy
temperature
diffraction
spectroscopy
x rays
energy

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Neutron scattering study of strain behaviour of porous rocks subjected to heating and unconfined uniaxial compression. / Faisal, Nadimul Haque; Sanaee, Reza; Singh, Rao Martand; Murray, John; McLaughlin, Abbie; Healy, David; Lee, Tung Lik.

In: Journal of Physics: Conference Series, Vol. 1106, No. 1, 012011, 2018.

Research output: Contribution to journalConference article

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AU - McLaughlin, Abbie

AU - Healy, David

AU - Lee, Tung Lik

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