Reservoir heterogeneities of storm-generated shelf sandstone bodies
Conference
·
OSTI ID:6116772
Examination of a number of examples of storm-generated shelf sandstones, including part of the Kuparuk River formation (Cretaceous, North Slope of Alaska) and examples from the Cretaceous Western Interior seaway, suggests that these reservoirs differ in their geometries, internal facies architectures, and heterogeneities from continental, shoreline, and deep-water reservoirs. Heterogeneities inherent in such shelf sandstone reservoirs control the distribution of permeability and porosity and influence the effectiveness of recovery techniques. Sandstone bodies produced by storm-driven processes generally exhibit sheet-like geometries and upward-coarsening vertical profiles. These bodies are typically composed of individual event beds of every fine- to fine-grained sandstone and exhibit wave-generated and combined flow structures with laterally persistent mud drapes at their tops. The event nature of deposition of these sandstones produces a highly stratified reservoir. Vertical to horizontal permeability ratios are very low and individual sandstone beds may behave as separate conduits of flow during production. Hummocky cross-stratified beds at the tops of upward-coarsening sequences constitute the most permeable, porous, and laterally continuous parts of these reservoirs.
- OSTI ID:
- 6116772
- Report Number(s):
- CONF-880301-
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
02 PETROLEUM
020200* -- Petroleum-- Reserves
Geology
& Exploration
03 NATURAL GAS
030200 -- Natural Gas-- Reserves
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ALASKA
CONTINENTAL MARGIN
CONTINENTAL SHELF
CRETACEOUS PERIOD
EXPLORATION
FEDERAL REGION X
GEOLOGIC AGES
GEOLOGIC DEPOSITS
GEOLOGIC MODELS
GEOPHYSICS
HETEROGENEOUS EFFECTS
MESOZOIC ERA
MINERAL RESOURCES
NATURAL GAS DEPOSITS
NORTH AMERICA
OFFSHORE SITES
ONSHORE SITES
PERMEABILITY
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POROSITY
RESERVOIR ROCK
RESOURCES
ROCKS
SANDSTONES
SEDIMENTARY ROCKS
STRATIFICATION
USA
020200* -- Petroleum-- Reserves
Geology
& Exploration
03 NATURAL GAS
030200 -- Natural Gas-- Reserves
Geology
& Exploration
ALASKA
CONTINENTAL MARGIN
CONTINENTAL SHELF
CRETACEOUS PERIOD
EXPLORATION
FEDERAL REGION X
GEOLOGIC AGES
GEOLOGIC DEPOSITS
GEOLOGIC MODELS
GEOPHYSICS
HETEROGENEOUS EFFECTS
MESOZOIC ERA
MINERAL RESOURCES
NATURAL GAS DEPOSITS
NORTH AMERICA
OFFSHORE SITES
ONSHORE SITES
PERMEABILITY
PETROLEUM DEPOSITS
POROSITY
RESERVOIR ROCK
RESOURCES
ROCKS
SANDSTONES
SEDIMENTARY ROCKS
STRATIFICATION
USA