Devonian reefs

Conference · Thu May 01 04:00:00 EDT 1986 · Am. Assoc. Pet. Geol., Bull.; (United States)

OSTI ID:5064447

Kuhme, A K

Three reef settings in northern Alberta and British Columbia were examined: (1) shelf edge, in the Clarke Lake shale basin; (2) open-marine pinnacle, in the Clarke Lake shale basin; and (3) restricted basin pinnacle, in the Shekilie evaporite basin. The shelf-edge reef tends to be water prone and does not offer the same reserves potential as pinnacle reefs; therefore, it is not examined in detail. The pinnacle reefs in the open-marine setting tend to be gas prone, whereas the pinnacle reefs in the restricted basin setting tend to be oil prone. Seismic models were generated from geologic cross sections over existing, economically producing reef anomalies. Seismic responses from these models were then examined, and criteria for reef identification established. For the acid test, seismic anomalies that were tested by the drill bit were examined, and the validity of the reef identification criteria was confirmed. Examples include both economic successes and failures. A different set of criteria for pinnacle reef identification were established for open-marine and restricted basin settings. Criteria are not universally applicable, so each basin will have a different set. Detecting the content and amount of porosity in reefs using seismic studies is elusive at best and remains a challenge to the explorationist.

• Research Organization: Canterra Energy Ltd., Calgary, Alberta
• OSTI ID: 5064447
• Report Number(s): CONF-860624-
• Conference Information: Journal Name: Am. Assoc. Pet. Geol., Bull.; (United States) Journal Volume: 70:5
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020200* -- Petroleum-- Reserves
Geology
& Exploration
ALBERTA
BRITISH COLUMBIA
CANADA
CARBONATE ROCKS
DEVONIAN PERIOD
EXPLORATION
GEOLOGIC AGES
GEOLOGIC DEPOSITS
GEOLOGIC STRUCTURES
MINERAL RESOURCES
NORTH AMERICA
PALEOZOIC ERA
PETROLEUM DEPOSITS
REEFS
RESERVOIR ROCK
RESOURCES
ROCKS
SEDIMENTARY BASINS
SEDIMENTARY ROCKS