Rock physics templates for chalk by combining acoustic and EM velocity
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Rock physics templates for chalk by combining acoustic and EM velocity. / Yuan, Hemin; Looms, Majken C.; Nielsen, Lars.
2020. 5407 Abstract from Society of Exploration Geophysicists International Exposition and Annual Meeting 2019, SEG 2019, San Antonio, United States.Research output: Contribution to conference › Conference abstract for conference › Research › peer-review
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TY - ABST
T1 - Rock physics templates for chalk by combining acoustic and EM velocity
AU - Yuan, Hemin
AU - Looms, Majken C.
AU - Nielsen, Lars
N1 - Publisher Copyright: © 2019 SEG
PY - 2020
Y1 - 2020
N2 - Characterizing physical properties of near surface chalk formations is always a challenging topic. Although acoustic and electromagnetic measurements can independently provide information on different properties, little research has combined them to characterize chalk rocks. Since both EM and acoustic properties are related to the porosity, saturation, and mineral composition of the rock, we develop rock physics templates to predict P-wave velocity (Vp), S-wave velocity (Vs), and permittivity from porosity and saturation. In this work, we first estimate the IF value of the IF model independently from field P-wave velocity and porosity measurements. Then, by combining crosshole ground-penetrating radar (GPR) velocity and porosity, we also estimate the value of the cementation index. Finally, given that the IF value and cementation index are independent of porosity and water saturation, we develop three rock physics templates to link Vp, Vs, and permittivity to porosity and saturation.
AB - Characterizing physical properties of near surface chalk formations is always a challenging topic. Although acoustic and electromagnetic measurements can independently provide information on different properties, little research has combined them to characterize chalk rocks. Since both EM and acoustic properties are related to the porosity, saturation, and mineral composition of the rock, we develop rock physics templates to predict P-wave velocity (Vp), S-wave velocity (Vs), and permittivity from porosity and saturation. In this work, we first estimate the IF value of the IF model independently from field P-wave velocity and porosity measurements. Then, by combining crosshole ground-penetrating radar (GPR) velocity and porosity, we also estimate the value of the cementation index. Finally, given that the IF value and cementation index are independent of porosity and water saturation, we develop three rock physics templates to link Vp, Vs, and permittivity to porosity and saturation.
U2 - 10.1190/segam2019-3214964.1
DO - 10.1190/segam2019-3214964.1
M3 - Conference abstract for conference
AN - SCOPUS:85079507491
SP - 5407
T2 - Society of Exploration Geophysicists International Exposition and Annual Meeting 2019, SEG 2019
Y2 - 15 September 2019 through 20 September 2019
ER -
ID: 270735878