department of geology portland state university m. cummings, j. jackson, d. percy
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Resource Assessment of Oil & Gas, Coal-Bed Methane, and Geothermal Resources in Western Washington. Department of Geology Portland State University M. Cummings, J. Jackson, D. Percy. Objectives. Phase One: Review literature to identify play concepts and data for subsequent evaluation - PowerPoint PPT PresentationTRANSCRIPT
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Resource Assessment of Oil & Gas, Coal-Bed Methane,
and Geothermal Resources in Western Washington
Department of Geology
Portland State University
M. Cummings, J. Jackson, D. Percy
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Objectives
• Phase One: Review literature to identify play concepts and data for subsequent evaluation
• Phase Two: Evaluate and tabulate data for use in subsequent evaluation
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Phase One Activities
• Compile and review existing literature relating to oil and gas resources
• Compile and review existing literature relating to coal-bed methane resources
• Compile and review existing literature relating to geothermal resources
• GIS review of existing physical and digital maps
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Phase One Products
• Annotated Bibliography
• Database of existing digital and map resources
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Phase Two Activities
• Enter oil & gas related data into digital database
• Enter coal-bed methane related data into digital database
• Enter geothermal related data into digital database
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Phase Two Products
• Database of oil & gas, coal-bed methane, and geothermal energy resources, with evaluation of utility for subsequent analysis.
• Preliminary map showing areas of high, medium, and low resource potential for oil & gas, coal-bed methane, and geothermal energy resources.
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Phase Three: Resource Assessment
• Petroleum Systems Assessment
• Coal-Bed Methane Systems Assessment
• Geothermal Systems Assessment
• Federal Land Assessment
• Preliminary Surface Impact Estimate
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Petroleum Systems
Limit of Source Interval
Limit of Mature Source
Limit ofReservoirInterval
Limit of Seal Area of StructuralDeformation
Play Area
Play Summary Map
Seal
Reservoir
MatureSourceInterval
ImmatureSourceInterval
Trap
Migration
Cross-Section
• Source Rock• Maturation• Migration• Structure• Reservoir• Seal
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Limit of Source Interval
Limit of Mature Source
Limit ofReservoirInterval
Limit of Seal Area of StructuralDeformation
Play Area
Play Summary Map
Seal
Reservoir
MatureSourceInterval
ImmatureSourceInterval
Trap
Migration
Cross-Section
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Petroleum System Assessments
• Mass-Balance– Source Richness
– Source Volume
– Hydrocarbon Generation
– Hydrocarbon Migration
– Trapping Efficiency
– Hydrocarbon Recovery
• Play Summation– Minimum Field Size
– Maximum Field Size
– Minimum Number
– Maximum Number
– Monte Carlo Sum
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Coal-Bed Methane System
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Coal-Bed Methane Assessment
• Gas Research Institute Mass-Balance
• Coal area (a)
• Coal thickness (h)
• Average rock density (d)
• Average gas content (g)
• Gas-in-place = (1359.7) a h d g
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Geothermal Systems
• Volcanic Center• Heat• Permeability• Water
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Geothermal Assessment
• Identify appropriate volcanic terrain analogs
• Identify producing geothermal facilities from analog terrain.
• Adjust assessment to account for differences between assessed terrain and analog terrain.
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Federal Land Assessments• Oil & Gas play area on Federal land
• Coal-Bed Methane play area on Federal land
• Geothermal terrain on Federal land
• Potential Gas Storage Centers on Federal Land
Mod
FederalLand
Resource Area
HighModerate
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Preliminary Impact Estimates
• Oil & Gas – Surface foot print– Water resource impact
• Coal-Bed Methane – Surface foot print– Water production
• Geothermal facility – Surface foot print– Water production
Drill Pad (X acres)
Producer
Injector
ProcessingFacility
Pipeline
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Phase Three Products• Oil & Gas Play Summary Maps
• Resource Assessments For Each Play
• Coal-Bed Methane Potential Maps
• Coal-Bed Methane Resource Assessments
• Geothermal Resource Maps
• Geothermal Resource Assessments
• Federal Land Assessments
• Preliminary Surface Impact Estimates
• Technical work recommendations
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Publications
• 2003 AAPG Annual Meeting Poster – Salt Lake City, UT
• 2003 Pacific Section Meeting Poster – Long Beach, CA
• Open File Report
• Website – http://nwdata.geol.pdx.edu/BLM/
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Summary
• Phase One: Literature Review
• Phase Two: Data Assembly
• Phase Three: Resource Assessment for Federal Lands
• Additional Phases: Field and Laboratory Studies to Improve Assessment
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Area Ranking Map Based on Literature Review
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Coal Bed Methane Ranking Map Based on Literature Review
Potential:LCBM – Low Coal Bed MethaneMCBM – Medium Coal Bed MethaneHCBM – High Coal Bed Methane
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Geothermal Resource Ranking Map Based on Literature Review
Potential:
MGt – Medium Geothermal HGt – High Geothermal
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Oil & Gas Ranking Map Based on Literature Review
Potential:MG – Medium GasHG – High Gas
MO – Medium Oil