REFLECTIVITY TEMPLATE, A NEW APPROACH IN THE HYDRATE RESOURCES APPRAISAL

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Hosseini Shoar Behnam; JAVAHERIAN ABDOLRAHIM; Keshavarz FarajKhah Nasser; Seddigh Arabani Mojtaba

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Seminar Paper

Paper Information

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

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Title

REFLECTIVITY TEMPLATE, A NEW APPROACH IN THE HYDRATE RESOURCES APPRAISAL

Author(s)

Hosseini Shoar Behnam | JAVAHERIAN ABDOLRAHIM | Keshavarz FarajKhah Nasser | Seddigh Arabani Mojtaba

Keywords

GAS HYDRATE

BSR

ROCK PHYSICS

EFFECTIVE MEDIUM THEORY (EMT)

AVO ANALYSIS

REFLECTIVITY TEMPLATE (RT)

Abstract

THE OCCURRENCE OF A BOTTOM SIMULATING REFLECTOR (BSR) IN 2-D SEISMIC DATA OF MAKRAN ACCRETIONARY PRISM REVEALS THE PRESENCE OF HYDRATE RESOURCES ON OFFSHORE IRAN. ACCORDING TO THE GLOBAL DISTRIBUTION OF MARINE HYDRATES, THEY ARE WIDELY PRESENT IN DEEP SEA SEDIMENTS WHERE HIGH OPERATIONAL COSTS AND HAZARDS CAUSE A LACK OF WELL LOG INFORMATION. THEREFORE, DEVELOPING A TOOL TO QUANTIFY THE HYDRATE RESOURCES WITH SEISMIC DATA WOULD BE AN ULTIMATE GOAL FOR UNEXPLORED REGIONS. REFLECTIVITY TEMPLATES (RT) WERE INTRODUCED IN THIS STUDY FOR QUANTIFICATION OF THE HYDRATE AND FREE GAS NEAR THE BSR. THESE RTS ARE INTUITIVE CROSSPLOTS OF P- AND S-IMPEDANCE CONTRASTS ACROSS THE BSR. THEY ARE THEORETICALLY CALCULATED BASED ON THE EFFECTIVE MEDIUM THEORY (EMT) FOR DIFFERENT HYDRATE DISTRIBUTION MODES WITH SOME ASSUMPTIONS ABOUT POROSITY AND MINERALOGICAL COMPOSITION OF UNCONSOLIDATED SEDIMENTS. THIS TECHNIQUE WILL SUGGEST THE POSSIBILITY OF USING THE AVO ANALYSIS OF THE BSR FOR A QUANTITATIVE INTERPRETATION WHEN WELL LOG DATA IS NOT AVAILABLE. BY SUPERIMPOSING THE AVO-DERIVED P- AND S-IMPEDANCE CONTRASTS ON THESE RTS, THE SATURATIONS OF THE HYDRATE AND FREE GAS COULD BE ESTIMATED. THE RESULTS OF USING THIS APPROACH FOR A 2-D MARINE PSTM DATA SHOWED THAT 4 TO 28% OF THE GAS HYDRATE AND 1 TO 2% OF THE FREE GAS ARE ACCUMULATED NEAR THE THRUSTED-RIDGE AND THRUSTED-FOOTWALL TYPES OF BSRS IN IRAN DEEP SEA SEDIMENTS.

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APA: Copy

Hosseini Shoar, Behnam, JAVAHERIAN, ABDOLRAHIM, Keshavarz FarajKhah, Nasser, & Seddigh Arabani, Mojtaba. (2013). REFLECTIVITY TEMPLATE, A NEW APPROACH IN THE HYDRATE RESOURCES APPRAISAL. SEMINAR PETROLEUM GEOPHYSICAL EXPLORATION. SID. https://sid.ir/paper/924442/en

Vancouver: Copy

Hosseini Shoar Behnam, JAVAHERIAN ABDOLRAHIM, Keshavarz FarajKhah Nasser, Seddigh Arabani Mojtaba. REFLECTIVITY TEMPLATE, A NEW APPROACH IN THE HYDRATE RESOURCES APPRAISAL. 2013. Available from: https://sid.ir/paper/924442/en

IEEE: Copy

Behnam Hosseini Shoar, ABDOLRAHIM JAVAHERIAN, Nasser Keshavarz FarajKhah, and Mojtaba Seddigh Arabani, “REFLECTIVITY TEMPLATE, A NEW APPROACH IN THE HYDRATE RESOURCES APPRAISAL,” presented at the SEMINAR PETROLEUM GEOPHYSICAL EXPLORATION. 2013, [Online]. Available: https://sid.ir/paper/924442/en

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