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AAPG Bulletin, Vol. 90 (2006), Program Abstracts (Digital)

7th Middle East Geosciences Conference and Exhibition
Manama, Bahrain
March 27-29, 2006

ABSTRACT: Previous HitSeismicNext Hit Frequencies: a Robust Interpretation Tool

Maher I. Al-Marhoon1 and Yi X. Luo2
1 Saudi Aramco, Saudi Aramco, P.O.Box 5860, Dhahran, 31311, Saudi Arabia, phone: +96638757977, fax: +96638731007, [email protected]
2 Saudi Aramco

Amplitude and Frequency are the main Previous HitseismicNext Hit attributes that are being used in Previous HitseismicNext Hit interpretation and stratigraphic analysis. The amplitude Previous HitattributeNext Hit which is a layer boundary Previous HitattributeNext Hit was being studied in both pre -stack and post-stack domains. However, the utilization of the frequency Previous HitattributeNext Hit which is an intrinsic Previous HitattributeNext Hit not like the amplitude Previous HitattributeNext Hit is not as popular. I think both of the attributes compliments each other.

In this paper, I want to shed light on some of the uses of Previous HitseismicNext Hit frequency data in the interpretation field and how robust it is in providing important tool to map reservoir quality, thickness and fluid type.

Pre-stack frequency analysis is one of the tools investigated. I found that using mid offset stack attenuation Previous HitattributeTop is the best in mapping areas with excellent reservoir filled with gas. This can be attributed to the quality of the data, less multiple effects and less noise, and might be also related to the angle of incidence.

Post-stack data were also investigated and I found that frequency tunning phenomenon can be used to map pinch-outs which can be used to delineate channels or any other geological features. We have extended this knowledge to even estimate thickness of thin reservoirs.

 

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