Basin development and hydrocarbon occurrence offshore Mid-Norway

Conference · Sat Sep 01 04:00:00 EDT 1984 · Am. Assoc. Pet. Geol., Bull.; (United States)

OSTI ID:6279382

Hagevang, T; Hollander, N B; Karlsson, W; Robinson, C I

The continental shelf offshore Mid-Norway was opened for exploration drilling in 1980. The area extends southward to the North Sea sedimentary basins and northward to the Barents Sea continental shelf. The central part is a proven petroleum province. After peneplanation of the Caldeonides, a large epicontinental basin connected the region between Greenland and Norway during the late Paleozoic and Mesozoic. A change in climate to more humid conditions toward the end of the Triassic led to coastal plain deposition that persisted into the Early Jurassic. These carbonaceous sediments are important source beds for gas and condensate. A major transgression took place during the Early Jurassic, leading to deposition of a sequence of shallow marine sands, tidal-flat sands, and offshore muds of medium to low reservoir quality. A Middle Jurassic regression resulted in deposition of shallow marine sandstones presently representing the main reservoir in the area. Normal and growth faulting during the Triassic to Early Jurassic culminated with the main Kimmerian (pre-Callovian) tectonic phase that resulted in extensive horst and graben development, with subsequent erosion of structural highs. The Upper Jurassic consists of marine shales, of which the upper part is an oil-prone shale of excellent source rock characteristics. The base of the Cretaceous is developed as a regional unconformity (late Kimmerian) onlapped by Cretaceous marine shales, marls, and minor limestone with no reservoir potential.

• Research Organization: Saga Petroleum A.S., Stavanger, Norway
• OSTI ID: 6279382
• Report Number(s): CONF-8410143-
• Conference Information: Journal Name: Am. Assoc. Pet. Geol., Bull.; (United States) Journal Volume: 68:9
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020200* -- Petroleum-- Reserves
Geology
& Exploration
03 NATURAL GAS
030200 -- Natural Gas-- Reserves
Geology
& Exploration
CONTINENTAL MARGIN
CONTINENTAL SHELF
EUROPE
EXPLORATION
GEOLOGIC DEPOSITS
GEOLOGIC HISTORY
GEOLOGIC STRUCTURES
MINERAL RESOURCES
NATURAL GAS DEPOSITS
NORWAY
ORIGIN
PETROLEUM DEPOSITS
RESERVOIR ROCK
RESOURCE POTENTIAL
RESOURCES
SCANDINAVIA
SEDIMENTARY BASINS
SEDIMENTATION
SOURCE ROCKS
TECTONICS
WESTERN EUROPE