TY - JOUR
T1 - A new expression for fluid factor using AVO intercept and gradient
AU - Farfour, Mohammed
AU - Castagna, John P.
N1 - Funding Information:
We would like to thank CGG for providing us with Hampson-Russell software. We also thank Geoscience Australia for making the Poseidon data set available under the terms of the Creative Commons “Attribution 3.0 Australia” license.
Publisher Copyright:
© 2021 Society of Exploration Geophysicists First International Meeting for Applied Geoscience & Energy
PY - 2021
Y1 - 2021
N2 - Numerous AVO fluid indicators have been introduced and proven to be sensitive to hydrocarbon presence. Mathematically, fluid indicators measure the deviation of seismic responses of hydrocarbon-saturated reservoirs from their background in a specific domain. We introduce a new expression for the fluid factor commonly used in AVO analysis and interpretation. The expression is a function of common AVO intercept and gradient and a weighting coefficient that allows one to suppress the contribution of lithology and other factors not related to fluid content. The performance of the weighted fluid factor is compared with other fluid factor expressions using a worldwide collection of velocity measurements. A case study on the Northwest Shelf of Australia shows that the fluid factor successfully detects known pay intervals.
AB - Numerous AVO fluid indicators have been introduced and proven to be sensitive to hydrocarbon presence. Mathematically, fluid indicators measure the deviation of seismic responses of hydrocarbon-saturated reservoirs from their background in a specific domain. We introduce a new expression for the fluid factor commonly used in AVO analysis and interpretation. The expression is a function of common AVO intercept and gradient and a weighting coefficient that allows one to suppress the contribution of lithology and other factors not related to fluid content. The performance of the weighted fluid factor is compared with other fluid factor expressions using a worldwide collection of velocity measurements. A case study on the Northwest Shelf of Australia shows that the fluid factor successfully detects known pay intervals.
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U2 - 10.1190/segam2021-3575102.1
DO - 10.1190/segam2021-3575102.1
M3 - Conference article
AN - SCOPUS:85118721173
SN - 1052-3812
VL - 2021-September
SP - 267
EP - 271
JO - SEG Technical Program Expanded Abstracts
JF - SEG Technical Program Expanded Abstracts
T2 - 1st International Meeting for Applied Geoscience and Energy
Y2 - 26 September 2021 through 1 October 2021
ER -