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PRB Infiltration StudyPRB Infiltration Study MBOGC & ALL ConsultingMBOGC & ALL Consulting Page Page 11
Powder River Basin (MT & WY)Powder River Basin (MT & WY)Coal Bed Methane Infiltration Coal Bed Methane Infiltration
StudyStudyProject WorkplanProject Workplan
Prepared by
Montana Board of Oil & Gas Conservation (Billings, MT)ALL Consulting (Tulsa, OK)
DOE Contract: DE-AD26-03NT30489MBOGC Contract: 2003-01
PRB Infiltration StudyPRB Infiltration Study MBOGC & ALL ConsultingMBOGC & ALL Consulting Page Page 22
Research Funding & Research Funding & CooperatorsCooperators
• Funding– U.S. DOE-FE
• NPTO/NETL
– Montana BOGC– ALL Consulting– Industry
• Cooperators– Cooperation with
stakeholders and other related and applicable research is a priority for the project
Fidelity Exploration & Production CompanyFidelity Exploration & Production CompanyAn MDU Resources Group, Inc. Company
Fidelity Exploration & Production CompanyFidelity Exploration & Production CompanyAn MDU Resources Group, Inc. Company
Anadarko PetroleumAnadarko Petroleum
Additional Cooperators Desired…Additional Cooperators Desired…Additional Cooperators Desired…Additional Cooperators Desired…
Western Research ProjectWestern Research Project
PRB Infiltration StudyPRB Infiltration Study MBOGC & ALL ConsultingMBOGC & ALL Consulting Page Page 33
ObjectivesObjectives
• Improving efficiencies and reducing costs
• Enhance understanding• Document current usages • Characterize and forecast
infiltration systems • Develop a guidebook • Pursue cooperation with
other complimentary research
PRB Infiltration StudyPRB Infiltration Study MBOGC & ALL ConsultingMBOGC & ALL Consulting Page Page 44
Project OverviewProject Overview
• Phase I– Data Gathering– Field Analysis– Site-Specific Data
Collection
• Phase II– Technical Analysis– Modeling– Analysis Methods
• Phase III– Analysis & Review– Report Development– Technology Transfer
PRB Infiltration StudyPRB Infiltration Study MBOGC & ALL ConsultingMBOGC & ALL Consulting Page Page 55
Prospective Research SitesProspective Research Sites
PRB Infiltration StudyPRB Infiltration Study MBOGC & ALL ConsultingMBOGC & ALL Consulting Page Page 66
Skewed SiteSkewed Site
Anadarko PetroleumBLM Buffalo Field OfficeU.S. Geological Survey
Johnson County, WyomingPowder River Watershed
PRB Infiltration StudyPRB Infiltration Study MBOGC & ALL ConsultingMBOGC & ALL Consulting Page Page 77
Skewed SiteSkewed Site
• Project funding provided by BLM and DOE’s National Petroleum Technology Office
• BLM Buffalo Field Office and USGS are leading a coordinated research effort for infiltration system in Johnson County, Wyoming
• Site part of the Big George Unit operated by Anadarko Petroleum
• Extensive monitoring system to facilitate analysis water chemistry and infiltration/migration of produced water from CBNG operations
• System monitoring is ongoing
PRB Infiltration StudyPRB Infiltration Study MBOGC & ALL ConsultingMBOGC & ALL Consulting Page Page 88
ObjectivesObjectives
• Compliment ongoing research being performed by BLM, USGS and Anadarko
• Focus Issues– Siting criteria used and lessons learned– design, permitting & regulatory concerns– Operations and related effectiveness– Fate & effects of produced water– Analysis Procedures
PRB Infiltration StudyPRB Infiltration Study MBOGC & ALL ConsultingMBOGC & ALL Consulting Page Page 99
Skewed Site ReservoirSkewed Site Reservoir
Reservoir DamMonitoring Stations
PRB Infiltration StudyPRB Infiltration Study MBOGC & ALL ConsultingMBOGC & ALL Consulting Page Page 1010
Influent & Pre-TreatmentInfluent & Pre-Treatment
PRB Infiltration StudyPRB Infiltration Study MBOGC & ALL ConsultingMBOGC & ALL Consulting Page Page 1111
Pre-Treatment SystemPre-Treatment System
PW Reservoir
Reservoir Dam
ZeoliteTreatment System
Monitoring Stations
PRB Infiltration StudyPRB Infiltration Study MBOGC & ALL ConsultingMBOGC & ALL Consulting Page Page 1212
Skewed Site MonitoringSkewed Site Monitoring
Monitoring Stations PW Reservoir
PRB Infiltration StudyPRB Infiltration Study MBOGC & ALL ConsultingMBOGC & ALL Consulting Page Page 1313
Seven Brothers & CX Seven Brothers & CX RanchRanch
Fidelity ExplorationMontana/Wyoming
Tongue River Watershed
PRB Infiltration StudyPRB Infiltration Study MBOGC & ALL ConsultingMBOGC & ALL Consulting Page Page 1414
Seven Brothers RanchSeven Brothers Ranch
• Seven Brothers/CX Ranch– Located along the Montana/Wyoming
boarder– Development underway by Fidelity
Exploration– Project is an expansion of the CX Ranch
Field
PRB Infiltration StudyPRB Infiltration Study MBOGC & ALL ConsultingMBOGC & ALL Consulting Page Page 1515
Site Selection TechniquesSite Selection Techniques
• Field evaluation practices include identification of suitable topographic features, landowner preferences, soil characteristics, and more…
Thick clay soil with absence of permeable layers
Gentle sloping area (<4/1 slope) with good usable berm on 1 to 3 sides of proposed pond placement.
Trenching is a common and economical way to gain
preliminary soils data for site suitability analysis
PRB Infiltration StudyPRB Infiltration Study MBOGC & ALL ConsultingMBOGC & ALL Consulting Page Page 1616
Good Soil CharacteristicsGood Soil Characteristics
~25’
Thick impermeable clays provide barriers to downward infiltration of produced water to be stored in the impoundment
Because of equipment that is common in CBM development areas in the PRB, trenching is commonly used as a “first-cut” in assessing the feasibility of a potential impoundment site.
Safety is always an issue. Operators may choose to install temporary fences in some locations to avoid accidents to humans, cattle, and wildlife.
Trenching may be followed by additional subsurface data collection, possibly using drilling or other techniques (e.g., hydroprobe, augering, etc.)
PRB Infiltration StudyPRB Infiltration Study MBOGC & ALL ConsultingMBOGC & ALL Consulting Page Page 1717
Preliminary Data CollectionPreliminary Data Collection
Trenching Equipment
Site exploration trench
PRB Infiltration StudyPRB Infiltration Study MBOGC & ALL ConsultingMBOGC & ALL Consulting Page Page 1818
Depositional ChallengesDepositional ChallengesThe Powder River Basin has broad heterogeneities relative to the depositional environment. In this example, a permeable and weathered coal seam is identified below about 15 feet of clay having intermittent sand and claystone layers.
~15’ Clay mix
Weathered coal showing signs of sulfate deposits
PRB Infiltration StudyPRB Infiltration Study MBOGC & ALL ConsultingMBOGC & ALL Consulting Page Page 1919
Culp Draw SiteCulp Draw Site(potential site)(potential site)
Anadarko PetroleumJohnson County, WyomingBeaver Creek Watershed
PRB Infiltration StudyPRB Infiltration Study MBOGC & ALL ConsultingMBOGC & ALL Consulting Page Page 2020
Culp Draw SettingCulp Draw Setting
Cottonwood Trees
View into draw at approximate Dam location
PRB Infiltration StudyPRB Infiltration Study MBOGC & ALL ConsultingMBOGC & ALL Consulting Page Page 2121
Inside Culp DrawInside Culp Draw
PRB Infiltration StudyPRB Infiltration Study MBOGC & ALL ConsultingMBOGC & ALL Consulting Page Page 2222
Geochemistry IssuesGeochemistry Issues
Local soil and bedrock deposits can impact chemical fate of “water” in the PRB, including Produced water, rainfall, snow melt, etc.
Gypsum Deposits in Coal
PRB Infiltration StudyPRB Infiltration Study MBOGC & ALL ConsultingMBOGC & ALL Consulting Page Page 2323
Pre-CBNG Mineral DepositsPre-CBNG Mineral Deposits
• Existing soils in the PRB may naturally contain high levels of various compounds, such as salts and metals
• At Culp Draw, as is common in the region, evaporated water has left visible mineral deposits (PRIOR TO CBNG DEVELOPMENT)
Salt and Mineral Deposits
PRB Infiltration StudyPRB Infiltration Study MBOGC & ALL ConsultingMBOGC & ALL Consulting Page Page 2424
Natural Mineral DepositsNatural Mineral Deposits
• Natural mineral deposits are common throughout the PRB and in Culp Draw
• Background analysis and identification of local “natural” deposits can help to avoid confusion pertaining to causation of visible and measurable environmental variations
PRB Infiltration StudyPRB Infiltration Study MBOGC & ALL ConsultingMBOGC & ALL Consulting Page Page 2525
Elegant Environmental Elegant Environmental SolutionsSolutions
• Cottonwood trees are common to the local area at Culp Draw
• Cottonwoods have an exceptional capacity absorb groundwater and are approximately three (3) times more effective than simple evaporation for volume reduction of water
• The use of cottonwoods for groundwater management could be evaluated at the Culp Draw site
PRB Infiltration StudyPRB Infiltration Study MBOGC & ALL ConsultingMBOGC & ALL Consulting Page Page 2626
Coordinated Water Coordinated Water ManagementManagement
Irrigation for is one of the produced water management
practices used in the Big George Unit by Anadarko
Petroleum
Wildlife watering is an important local beneficial use of CBNG produced water in the PRB. Wildlife, such as Antelope, are attracted to
CBNG reservoirs.
PRB Infiltration StudyPRB Infiltration Study MBOGC & ALL ConsultingMBOGC & ALL Consulting Page Page 2727
Produced Water TreatmentProduced Water TreatmentZeolite Pre-Treatment SAR Reduction using Gypsum
PRB Infiltration StudyPRB Infiltration Study MBOGC & ALL ConsultingMBOGC & ALL Consulting Page Page 2828
Surface DischargeSurface Discharge
CBNG Produced Water Discharge from Anadarko Petroleum’s Big George Unit into Beaver Creek
Burger Draw, downstream of CBNG produced water discharges
Beaver Dam
PRB Infiltration StudyPRB Infiltration Study MBOGC & ALL ConsultingMBOGC & ALL Consulting Page Page 2929
Closing…Closing…
• New sites are currently under review by the research team and industry cooperators– Final selections to be determined by Summer 2004
• Researchers, DOE, and the Western Research Project are working to cooperate on complimentary issues– Coal Creek Site– Beaver Creek Site
• DOE currently considering shallow seismic to research using previously funded DOE research by Montana Tech
• Coordination with other researchers/cooperators desired (Universities, government, etc.)– Collaboration, technical, guidance, review, etc.
PRB Infiltration StudyPRB Infiltration Study MBOGC & ALL ConsultingMBOGC & ALL Consulting Page Page 3030
Contact InformationContact Information
ALL Project ManagerALL Project ManagerDan Arthur, P.EProject Research
ManagerALL Consulting1305 E. 15th StreetSuite 205Tulsa, Oklahoma [email protected]/cbm
MBOGC Project MBOGC Project ManagerManagerTom RichmondAdministratorMontana BOGC2535 St. JohnsBillings, Montana406-656-0040trichmond@mt.state.uswww.bogc.dnrc.state.mt.us