Controls of reservoir quality for submarine fan of F4 Formation in the Z oilfield, Illizi Basin, Algeria
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View abstract on PubMed
Summary
This summary is machine-generated.High-quality submarine fan reservoirs in Algeria
Area Of Science
- Geology
- Petroleum Geology
- Sedimentology
Background
- Subaqueous fan reservoirs are key targets in deep-water oil and gas exploration.
- Understanding reservoir genesis is vital for identifying productive wells in these settings.
Purpose Of The Study
- To classify depositional environments and lithofacies associations.
- To identify diagenetic processes and their impact on reservoir quality.
- To develop a genetic model for high-quality reservoirs in the Z oilfield, Illizi Basin.
Main Methods
- Integration of core data, thin-section analysis, grain-size data, logging, and petrophysical data.
- Systematic classification of depositional environments and lithofacies.
- Identification and analysis of diagenetic types and evolution sequences.
Main Results
- Identified 12 rock lithofacies types and 6 associations, dominated by braided river channels and interchannel facies.
- Recognized four diagenetic processes: compaction, cementation, dissolution, and fracturing.
- Calcite and dolomite cementation sequences correlate with superior reservoir properties due to enhanced dissolution.
Conclusions
- Depositional facies and diagenetic processes critically control reservoir quality.
- High-quality reservoirs in braided river microfacies experienced calcite cementation.
- Findings provide insights for exploration and production in similar deep-water settings.
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