Regional caprock-destroying dolomite on the middle Jurassic to early Cretaceous Arabian Shelf
Massive, stratigraphically discordant dolomite occurs on the late Mesozoic Arabian Shelf in the northern portion of Aramco's main producing area. The dolomite is associated with solution-collapse of anhydrite seals and with enhancement of porosity and permeability in tight limestone seals within the region. By destroying regional caprocks, dolomitization has had an adverse effect on oil accumulation. The spatial distribution of this regional dolomite was mapped with wireline log and core data. Geochemical and fluid-inclusion analyses indicate that the dolomite formed from hot saline brines that were first expelled from halite-bearing evaporites, and then migrated into Arabian Shelf carbonates during burial.
- Research Organization:
- Arabian American Oil Co.
- OSTI ID:
- 5537216
- Journal Information:
- SPE (Society of Petroleum Engineers) Format. Eval.; (United States), Journal Name: SPE (Society of Petroleum Engineers) Format. Eval.; (United States) Vol. 2:4; ISSN SFEVE
- Country of Publication:
- United States
- Language:
- English
Similar Records
Carbonate-evaporite sequences of the late Jurassic, southern and southwestern Arabian Gulf
Carbonate-evaporite cycles in the Miocene to Holocene of Abu Dhabi, United Arab Emirates
Related Subjects
020200* -- Petroleum-- Reserves
Geology
& Exploration
ALKALINE EARTH METAL COMPOUNDS
ANHYDRITE
CALCIUM CARBONATES
CALCIUM COMPOUNDS
CALCIUM SULFATES
CARBON COMPOUNDS
CARBONATE MINERALS
CARBONATE ROCKS
CARBONATES
CHEMISTRY
CRETACEOUS PERIOD
DOLOMITE
EXPLORATION
GEOCHEMISTRY
GEOLOGIC AGES
GEOLOGIC DEPOSITS
GEOLOGY
JURASSIC PERIOD
LIMESTONE
MAGNESIUM CARBONATES
MAGNESIUM COMPOUNDS
MESOZOIC ERA
MIDDLE EAST
MINERAL RESOURCES
MINERALIZATION
MINERALS
OIL SATURATION
OXYGEN COMPOUNDS
PERMEABILITY
PETROLEUM DEPOSITS
POROSITY
RESERVOIR ROCK
RESOURCES
ROCKS
SATURATION
SEDIMENTARY ROCKS
STRATIGRAPHY
SULFATE MINERALS
SULFATES
SULFUR COMPOUNDS
WELL LOGGING