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Vol.2 , No. 5, Publication Date: Oct. 10, 2015, Page: 105-112
. The growth analysis involved plotting the change in depth (∆d) of corresponding markers in two wells or in a seismic section having growth faults against the depth (d) of the marker in the higher well or higher wall of the seismic section. The plot of the change in depth of markers against corresponding depths of higher structural wall for the seismic data showed three condensed section, one expanded growth, four sequence boundaries and five distinctive changes in the growth history for the seismic section. Two expanded growth, three condensed sections, four sequence boundaries and five distinctive changes were obtained for the well logs. The zone of significant information is the highest expanded zone. This is the zone of hydrocarbon accumulation. The depth of the reservoir varies between 1900 – 2000 and 2300- 2400 metres. The condensed sections are made of shale lithology and that act as seal for hydrocarbon in the expanded sections. This analysis has provided significant information about the stratigraphy and growth fault history of the study area.&picture=http://www.aascit.org/aascit/decorators/img/journal/899.jpg)
| [1] | Emujapkorue Godwin Omokenu, Department of Physics, University of Port Harcourt, Port Harcourt, River State, Nigeria. |
The growth fault history of an oil field in the onshore Niger Delta has been carried out. Both seismic and well logs data were used independently for the analysis. The seismic section contains two growth faults (x and y). The growth analysis involved plotting the change in depth (∆d) of corresponding markers in two wells or in a seismic section having growth faults against the depth (d) of the marker in the higher well or higher wall of the seismic section. The plot of the change in depth of markers against corresponding depths of higher structural wall for the seismic data showed three condensed section, one expanded growth, four sequence boundaries and five distinctive changes in the growth history for the seismic section. Two expanded growth, three condensed sections, four sequence boundaries and five distinctive changes were obtained for the well logs. The zone of significant information is the highest expanded zone. This is the zone of hydrocarbon accumulation. The depth of the reservoir varies between 1900 – 2000 and 2300- 2400 metres. The condensed sections are made of shale lithology and that act as seal for hydrocarbon in the expanded sections. This analysis has provided significant information about the stratigraphy and growth fault history of the study area.
Keywords
Growth Faults, Seismic Sections, Well Logs, History
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