AVO ANALYSIS FOR DIRECT HYDROCARBON DETECTION IN ONE FIELD AT PERSIAN GULF

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EMAMI NIRI MOHAMMAD; RIAHI MOHAMMAD ALI; NOROOZI GHOLAMHOSSEIN

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Seminar Paper

Paper Information

Seminar: IRANIAN GEOPHYSICS CONFERENCE
Year:2006 | Issue:12

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Title

AVO ANALYSIS FOR DIRECT HYDROCARBON DETECTION IN ONE FIELD AT PERSIAN GULF

Author(s)

EMAMI NIRI MOHAMMAD | RIAHI MOHAMMAD ALI | NOROOZI GHOLAMHOSSEIN

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Abstract

IN THIS PAPER, AT FIRST WE SAY ABOUT THE AVO THEORY. A SEISMIC LINE FROM ONE OIL FIELD AT PERSIAN GOLF AND TWO WELLS ARE SELECTED TO INDICATE THE RESULTS OF APPLICATION OF AVO ANALYSIS FOR DETECTION OF HYDROCARBON RESERVOIR IN THIS FIELD.A SPECIAL AVO PROCESSING WAS APPLIED TO DATA USING VISTA PACKAGE SOFTWARE. TO OBTAIN BROADBAND DATA AND SUPPRESSION OF NOISE AND MULTIPLES, DECONVOLUTION AND RADON TRANSFORM WERE PERFORMED. IN AVO INTERPRETATION AN AMPLITUDE ANOMALY IN AVO ATTRIBUTES WAS DETECTED. THEN A CDP GATHER WAS CHECKED FOR OUR HYPOTHESIS. IN THE NEXT STAGE AN ITERATIVE AND LINEARZED INVERSION ALGORITHM CARRIED OUT IN THE X-T DOMAIN HAS BEEN APPLIED TO A CDP GATHER .THEN WELL LOGS ARE USED TO GENERATE THE INITIAL STARTING MODEL FOR THE INVERSION. THE INVERSION, PERFORMED WITH STARTING MODEL IN PAY ZONES HAVING A POISSON’S RATIO APPROPRIATE WITH HYDROCARBON SATURATION IN THE TARGET ZONE, THERE IS CONVERGENCE FROM THE INITIAL TO THE REAL SEISMIC GATHER.AT LAST STAGE, IT WAS COMPUTED P-WAVE VELOCITY MAP OF SECTION BY FINDING A MULTI-LINEAR RELATIONSHIP BETWEEN SONIC LOGS AND ATTRIBUTES. THEN THIS RELATIONSHIP WAS APPLIED TO THE ATTRIBUTES. AT THE P-WAVE VELOCITY COMPUTED SECTION FOUND A LOW VELOCITY ANOMALY THAT MATCHED WITH AVO ANOMALY IN OTHER ATTRIBUTES.THESE PROVED THAT THE OBSERVED AVO ANOMALY IS GAS CAP OF THE FIELD.

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APA: Copy

EMAMI NIRI, MOHAMMAD, RIAHI, MOHAMMAD ALI, & NOROOZI, GHOLAMHOSSEIN. (2006). AVO ANALYSIS FOR DIRECT HYDROCARBON DETECTION IN ONE FIELD AT PERSIAN GULF. IRANIAN GEOPHYSICS CONFERENCE. SID. https://sid.ir/paper/906519/en

Vancouver: Copy

EMAMI NIRI MOHAMMAD, RIAHI MOHAMMAD ALI, NOROOZI GHOLAMHOSSEIN. AVO ANALYSIS FOR DIRECT HYDROCARBON DETECTION IN ONE FIELD AT PERSIAN GULF. 2006. Available from: https://sid.ir/paper/906519/en

IEEE: Copy

MOHAMMAD EMAMI NIRI, MOHAMMAD ALI RIAHI, and GHOLAMHOSSEIN NOROOZI, “AVO ANALYSIS FOR DIRECT HYDROCARBON DETECTION IN ONE FIELD AT PERSIAN GULF,” presented at the IRANIAN GEOPHYSICS CONFERENCE. 2006, [Online]. Available: https://sid.ir/paper/906519/en

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