PRE-STACK QUANTIFICATION OF GAS-HYDRATE RESOURCES USING SIMULATED ANNEALING OPTIMIZATION AND ROCK PHYSICS MODELING

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Salehi Ehsan; JAVAHERIAN ABDOLRAHIM; ATAEE POUR MAJID; Keshavarz FarajKhah Nasser; KHOSHDEL HOSSEIN

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Seminar Paper

Paper Information

Seminar: SEMINAR PETROLEUM GEOPHYSICAL EXPLORATION
Year:2013 | Issue:1

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Title

PRE-STACK QUANTIFICATION OF GAS-HYDRATE RESOURCES USING SIMULATED ANNEALING OPTIMIZATION AND ROCK PHYSICS MODELING

Author(s)

Salehi Ehsan | JAVAHERIAN ABDOLRAHIM | ATAEE POUR MAJID | Keshavarz FarajKhah Nasser | KHOSHDEL HOSSEIN

Keywords

GAS HYDRATE

AVA INVERSION

BSR

MAKRAN ACCRETIONARY PRISM

Abstract

THE METHOD OF AMPLITUDE VARIATION WITH ANGLE (AVA) INVERSION WAS APPLIED TO ESTIMATE HYDRATE AND GAS SATURATIONS ALONG A BOTTOM SIMULATING REFLECTOR (BSR) AT THE MAKRAN ACCRETIONARY PRISM, IRAN. THREE AVA APPROXIMATIONS WERE USED AND THEIR CORRESPONDING AVA ATTRIBUTES WERE COMPARED TO EACH OTHER. VS/VP VALUES ARE USUALLY UNKNOWN FOR UNEXPLORED REGIONS AND HERE A SIMULATED ANNEALING APPROACH WAS TAKEN TO DERIVE THE VS/VP IN A NUMBER OF LOCATIONS. THESE VALUES WERE THEN INTERPOLATED TO GET AN ESTIMATION OF VS/VP FOR OTHER LOCATIONS.QUANTIFICATION OF HYDRATE AND GAS SATURATIONS WAS BASED ON A CORRELATION BETWEEN THE AVA INVERTED ATTRIBUTES AND THE ROCK PHYSICS DERIVED ATTRIBUTES (RPDA). CORRESPONDING SATURATIONS OF THE NEAREST RPDA TO A PAIR OF AVA INVERTED ATTRIBUTES WERE CONSIDERED AS THE HYDRATE AND GAS SATURATION FOR THAT SPECIFIC LOCATION. THE QUANTIFICATION ASSESSMENT INDICATED 11%, 14% AND 15% HYDRATE SATURATIONS IN THE VICINITY OF THE BSR FOR LOCATIONS WITH LOW, INTERMEDIATE AND HIGH POST-STACKED AMPLITUDE, RESPECTIVELY. THE SATURATION OF THE FREE GAS WAS ALSO ESTIMATED AS < 1%, 2% AND 3% WITH THE SAME ORDER AS ABOVE, RESPECTIVELY.

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APA: Copy

Salehi, Ehsan, JAVAHERIAN, ABDOLRAHIM, ATAEE POUR, MAJID, Keshavarz FarajKhah, Nasser, & KHOSHDEL, HOSSEIN. (2013). PRE-STACK QUANTIFICATION OF GAS-HYDRATE RESOURCES USING SIMULATED ANNEALING OPTIMIZATION AND ROCK PHYSICS MODELING. SEMINAR PETROLEUM GEOPHYSICAL EXPLORATION. SID. https://sid.ir/paper/924435/en

Vancouver: Copy

Salehi Ehsan, JAVAHERIAN ABDOLRAHIM, ATAEE POUR MAJID, Keshavarz FarajKhah Nasser, KHOSHDEL HOSSEIN. PRE-STACK QUANTIFICATION OF GAS-HYDRATE RESOURCES USING SIMULATED ANNEALING OPTIMIZATION AND ROCK PHYSICS MODELING. 2013. Available from: https://sid.ir/paper/924435/en

IEEE: Copy

Ehsan Salehi, ABDOLRAHIM JAVAHERIAN, MAJID ATAEE POUR, Nasser Keshavarz FarajKhah, and HOSSEIN KHOSHDEL, “PRE-STACK QUANTIFICATION OF GAS-HYDRATE RESOURCES USING SIMULATED ANNEALING OPTIMIZATION AND ROCK PHYSICS MODELING,” presented at the SEMINAR PETROLEUM GEOPHYSICAL EXPLORATION. 2013, [Online]. Available: https://sid.ir/paper/924435/en

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