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Stratigraphically complex fields (view source)
Revision as of 20:49, 19 January 2022
, 20:49, 19 January 2022added Category:Methods in Exploration 10 using HotCat
| isbn = 0891816607
| isbn = 0891816607
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}}
Stratigraphically complex fields are those that exhibit a high degree of vertical and lateral heterogeneity that is directly controlled by the environment of deposition (Table 1). This heterogeneity occurs at all scales (see [[Geological heterogeneities]]). It can result in a highly variable distribution of rock properties within one reservoir and the division of a single stratigraphic interval into multiple reservoirs that act as independent, self-contained compartments.
Stratigraphically complex fields are those that exhibit a high degree of vertical and [[lateral]] heterogeneity that is directly controlled by the environment of deposition (Table 1). This heterogeneity occurs at all scales (see [[Geological heterogeneities]]). It can result in a highly variable distribution of rock properties within one reservoir and the division of a single stratigraphic interval into multiple reservoirs that act as independent, self-contained compartments.
==Degree of hetrogeneity==
==Degree of hetrogeneity==
| 8.0
| 8.0
|-
|-
| Fluvial or deltaic sandstone on carbonate shelf
| Fluvial or deltaic [[sandstone]] on carbonate shelf
| 8.0
| 8.0
|-
|-
| 8.5
| 8.5
|-
|-
| Open shelves, extensive diagenesis
| Open shelves, extensive [[diagenesis]]
| 8.0
| 8.0
|-
|-
* Questionable correlation of depositional packages between wells
* Questionable correlation of depositional packages between wells
* Presence of numerous vertical [[permeability]] barriers at a variety of scales
* Presence of numerous vertical [[permeability]] barriers at a variety of scales
* Complex [[porosity]]-permeability and [[capillary pressure]] relationships (a broad scatter in the data indicates different lithofacies and pore types)
* Complex [[porosity]]-permeability and [[capillary pressure]] relationships (a broad scatter in the data indicates different [[lithofacies]] and pore types)
* Anomalous changes in pressure gradient
* Anomalous changes in pressure gradient
* Variable oil and water chemical composition
* Variable oil and water chemical composition
[[Category:Geological methods]]
[[Category:Geological methods]]
[[Category:Methods in Exploration 10]]