--> Abstract: Application of Spectral Decomposition to 3-D Visualization of thin Sandstone Reservoir in “X Field” Niger Delta, Nigeria, by A.O. Aderoju, O.G. Bayowa, and O.A. Alao, #90188 (2014)
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Application of Spectral Decomposition to 3-D Visualization of Previous HitthinNext Hit Sandstone Reservoir in “X Field” Niger Delta, Nigeria

A.O. Aderoju1, O.G. Bayowa1, and O.A. Alao2

1Ladoke Akintola University of Technology
2Obafemi Awolowo University

Abstract

Technology has been predicted as the last card in combating the ever increasing demand of our commodity; oil and gas. Modern approach to Seismic acquisitions and interpretation is of prime essence. A powerful Interpretation tool; Spectral decomposition, has been used to visualize a Previous HitthinNext Hit sandstone reservoir in “X – Field” Niger Delta. The study aimed at mapping Previous HitthinNext Hit sandstone beds which have been considered sub seismic. Well log data were acquired. Two Previous HitthinNext Hit sandstone bed TB 01T and TB 03T were mapped and qualitatively and quantitatively interpreted using RocDok software and correlated across four wells; Tmb 01, 02, 04 and 05. The interpreted well logs were presented in tables. Seismic data were also acquired. Previous HitThinNext Hit sandstone bed markers were identified from well logs and consequently mapped on the seismic data. The data were interpreted using the OpendTect software for sandstone frequency Previous HitanalysisNext Hit which was presented in form of maps. The frequency Previous HitanalysisNext Hit was carried out both on the plan view and the Previous HitsectionNext Hit view. Two Previous HitthinNext Hit sandstone beds were delineated from the well log. TB 01T had an average thickness of 4.16m. The sandstone unit cuts across three wells (Tmb 01, 04 and 05) but could not be delineated in Tmb 02. TB 03T was extremely Previous HitthinNext Hit. Its average thickness could not be estimated but it cuts through the four considered wells. Frequency Previous HitanalysisNext Hit from seismic sectional view revealed the portion of the Previous HitthinNext Hit pay sandstone as the markers were perfectly engulfed by high amplitude. The plan view seismic Previous HitanalysisNext Hit also showed high amplitude across the region of the Previous HitthinNext Hit sandstone. The study concluded that the high amplitude represented on the seismic views characterize the Previous HitthinTop sandstone pay. Other regions on the seismic views represented by high amplitude were identified to be new prospects. Further exploration work is suggested for the identified prospects.

 

AAPG Search and Discovery Article #90188 ©GEO-2014, 11th Middle East Geosciences Conference and Exhibition, 10-12 March 2014, Manama, Bahrain