TY - GEN
T1 - ROCK PHYSICS ANALYSIS OF VOLCANIC LAVA FLOWS AND HYALOCLASTITES
AU - Avseth, P.
AU - Millett, J.
AU - Jerram, D.
AU - Planke, S.
AU - Healy, D.
N1 - Funding Information:
We acknowledge Volcanic Basin Petroleum Research for funding and data of this study.
PY - 2021/10
Y1 - 2021/10
N2 - A study is conducted to investigate the rock physics properties of volcanic facies from available core measurements (72 samples available from Iceland and Hawaii). The main goal is to investigate the rock physics properties of a set of volcanic rock samples, and to establish predictive rock physics templates for these rocks, as a function of facies and rock texture, fluids and minerology. We focus on lava flows and hyaloclastites from Iceland and Hawaii. We find that both these facies can be modelled using modified Hashin-Shtrikman upper elastic bounds, and we create rock-physics templates for varying porosity and fluid saturations. Dry or gas-filled hyaloclastite facies plots with low acoustic impedances and low Vp/Vs ratios and are nicely separated from brine-filled hyaloclastites. Dry and wet high-porosity/high-permeability vesicular lavas will have similar AI and Vp/Vs values, and therefore these rocks will be more difficult to discriminate seismically.
AB - A study is conducted to investigate the rock physics properties of volcanic facies from available core measurements (72 samples available from Iceland and Hawaii). The main goal is to investigate the rock physics properties of a set of volcanic rock samples, and to establish predictive rock physics templates for these rocks, as a function of facies and rock texture, fluids and minerology. We focus on lava flows and hyaloclastites from Iceland and Hawaii. We find that both these facies can be modelled using modified Hashin-Shtrikman upper elastic bounds, and we create rock-physics templates for varying porosity and fluid saturations. Dry or gas-filled hyaloclastite facies plots with low acoustic impedances and low Vp/Vs ratios and are nicely separated from brine-filled hyaloclastites. Dry and wet high-porosity/high-permeability vesicular lavas will have similar AI and Vp/Vs values, and therefore these rocks will be more difficult to discriminate seismically.
UR - http://www.scopus.com/inward/record.url?scp=85127763508&partnerID=8YFLogxK
U2 - 10.3997/2214-4609.202010499
DO - 10.3997/2214-4609.202010499
M3 - Published conference contribution
AN - SCOPUS:85127763508
T3 - 82nd EAGE Conference and Exhibition 2021
SP - 496
EP - 500
BT - 82nd EAGE Conference and Exhibition 2021
PB - European Association of Geoscientists and Engineers, EAGE
T2 - 82nd EAGE Conference and Exhibition 2021
Y2 - 18 October 2021 through 21 October 2021
ER -