PLAYMAKER: A knowledge-based approach to characterizing hydrocarbon plays
- Vanderbilt Univ., Nashville, TN (USA)
- Univ. of South Carolina, Columbia (USA)
- Univ. of West Florida, Pensacola (USA)
Present-day methods for prospect analysis include structural and facies analysis to identify traps; data comes from outcrops, well logs, and seismic lines. PLAYMAKER adopts a more comprehensive geologic model based on basin analysis, which includes understanding of the geologic history of the basin and determining where potential source rocks and traps could be located in the basin. The system uses a knowledge-based approach to acquire, from the user, interpreted data information, which helps characterize plays and prospects. Some characteristics, such as the sediment type, geometry, and facies models relate to the essential components of a hydrocarbon-bearing prospect: source rock, reservoir, and seal. Other characteristics, such as the tectonic setting, structural style, and history of the basin in which the prospect or play is located, provide background information for further understanding of the play or prospect. Still other characteristics are specific to individual components, such as the qualitative parameters that allow geologists to predict reservoir porosity and permeability, the nature of the seal, and the organic content of the source rock. Relations between interpreted data sources and the required play characteristics are necessarily judgmental. They are developed into if-then rules with associated belief values to express the strength of the judgmental associations. Version 1 of PLAYMAKER implemented using a partitioned rule-base approach, was found to have a number of deficiencies. The authors concentrate on version 2 of PLAYMAKER, where the knowledge base is redesigned, to remove some limitations of version 1, as a two-level hierarchy. An additional feature of version 2 is an interactive editor for modifying the system's knowledge base.
- OSTI ID:
- 7033151
- Report Number(s):
- CONF-900605--
- Journal Information:
- AAPG Bulletin (American Association of Petroleum Geologists); (USA), Journal Name: AAPG Bulletin (American Association of Petroleum Geologists); (USA) Vol. 74:5; ISSN AABUD; ISSN 0149-1423
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
020200* -- Petroleum-- Reserves
Geology
& Exploration
58 GEOSCIENCES
580000 -- Geosciences
99 GENERAL AND MISCELLANEOUS
990200 -- Mathematics & Computers
COMPUTER CODES
DATA ANALYSIS
EXPERT SYSTEMS
EXPLORATION
GEOLOGIC DEPOSITS
GEOLOGIC MODELS
GEOLOGIC STRUCTURES
GEOLOGIC TRAPS
GEOPHYSICAL SURVEYS
KNOWLEDGE BASE
MINERAL RESOURCES
PERMEABILITY
PETROLEUM DEPOSITS
POROSITY
RESOURCES
SEDIMENTARY BASINS
SEISMIC SURVEYS
SURVEYS
WELL LOGGING