AVO MODELING FOR GAS SAND RESERVOIR

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NOBAHARY KOOZEHKONAN ZH.; JAVAHERIAN A.

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Journal: JOURNAL OF THE EARTH Year:2010 | Volume:5 | Issue:3 Page(s): 61-69

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Title

AVO MODELING FOR GAS SAND RESERVOIR

Author(s)

NOBAHARY KOOZEHKONAN ZH. | JAVAHERIAN A. | Issue Writer Certificate

Keywords

GROUNDWATER ATTRIBUTESQ3

CROSS-PLOTSQ3

NORMAL REFLECTION COEFFICIENTQ3

POISSON REFLECTION COEFFICIENTQ3

BRIGHT SPOTQ3

Abstract

AVO analysis is a technique for studying on pre-stack seismic data. Today, estimation and crossplotting attributes can be used to identify lithologies and pore fluids. In this paper, we study the Poisson reflectivity (PR) and the normal incident reflectivity (NI) for identifying lithologies and pore fluids. Two models are considered as a class II AVO model. They are including water-saturated sand and gas-saturated sand fenced in shale layers. First, we generated a color-coded seismic section using color coding method in NI-PR cross-plot that colors replace the numbers. In this way, we can indicate that the AVO clustering in each time sample and each offset. This technique directly helps to commentator to distinct the AVO class anomalies in special time and location on a stack section. We noticed that the BRIGHT SPOT or the dim spot technique is not successful to infer the class II in NI or NI*PR section. But the (PRÙ2-NIÙ2) /2 attribute generates a section that class II AVO anomalies is mapped as class III AVO anomalies and class III will be associated with the BRIGHT SPOT. Therefore, PR attribute besides NI attribute can be useful to indicate class II AVO anomalies by mapping in class III and the BRIGHT SPOT in a seismic section.

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APA: Copy

NOBAHARY KOOZEHKONAN, ZH., & JAVAHERIAN, A.. (2010). AVO MODELING FOR GAS SAND RESERVOIR. JOURNAL OF THE EARTH, 5(3), 61-69. SID. https://sid.ir/paper/192975/en

Vancouver: Copy

NOBAHARY KOOZEHKONAN ZH., JAVAHERIAN A.. AVO MODELING FOR GAS SAND RESERVOIR. JOURNAL OF THE EARTH[Internet]. 2010;5(3):61-69. Available from: https://sid.ir/paper/192975/en

IEEE: Copy

ZH. NOBAHARY KOOZEHKONAN, and A. JAVAHERIAN, “AVO MODELING FOR GAS SAND RESERVOIR,” JOURNAL OF THE EARTH, vol. 5, no. 3, pp. 61–69, 2010, [Online]. Available: https://sid.ir/paper/192975/en

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