14
wells analysed from blocks 14/10 and 14/15
Sea lion Field Area, North Falkland Basin
The stratigraphic resolution of the Early Cretaceous interval from the North Falkland Basin, within which prospective Sea Lion reservoir sandstones were deposited. This supported the seismic interpretation and adding sub-seismic resolution at certain levels. Bio- and chemical stratigraphic data were based on conventional core and ditch cuttings from all the Rockhopper-operated wells in blocks 14/10 and 14/15, Sea Lion area. (69)
Key details
Project name
Integrated bio and chemical stratigraphy in the development of a reservoir-scale framework - Sea lion Field area, North Falkland Basin
Client
Rockhopper Exploration plc
Location
Offshore Falkland Islands (Malvinas)
Services provided
- Biostratigraphic (palynology and ostracods) and chemical stratigraphic analysis
Challenge
Deposition within the North Falkland Basin occurred within a fluvial and lacustrine environment resulting in an absence of marine derived palynomorphs and a scarcity of other regionally occurring age diagnostic taxa.
This, together with a lack of previously published data meant the chronostratigraphic calibration of Early Cretaceous non-marine events was poor and needed to be addressed.
In addition, the chemical stratigraphy results from the analysis of sandstones initially provided a variable set of data that was inconsistent with both the biostratigraphy and seismic data in a stratigraphic layering sense, indicating that the controls of elemental character were not primarily stratigraphic controlled, but dominated by sediment provenance characteristics. (108)
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9,947 m
of well section analysed
678
palynological samples analysed
263
micropalaeontological samples analysed
775
chemical stratigraphy samples analysed
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