legal and regulatory aspects of co2 geological ... · pdf file– competition and primacy...
TRANSCRIPT
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Legal and Regulatory Aspects of CO2 Geological Sequestration,
and Leakage RisksDr. Stefan Bachu
Principal Scientist, CO2 StorageAlberta Research Council
Workshop on Capacity Building in Emerging EconomiesSeptember 8-9, 2008
Salvador, Bahia, Brazil
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1. Jurisdictional2. Property issues3. Regulatory4. Liability
Type of Policy,Legal and Regulatory Issues
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Who has jurisdiction over what, and whose or what laws apply:
• Constitutional jurisdiction • Territorial jurisdiction• Organizational jurisdiction
Jurisdictional Issues
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Issue of overlap, differences and precedence between federal/national and state/provincial jurisdiction:
– Natural resources versus waste disposal– Environment: air, surface water, groundwater– Sea, subsea
Various level of government have different, sometimes overlapping jurisdiction over various parts of the CO2 capture and sequestration chain
Constitutional Jurisdiction in Federal Nations
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• National jurisdiction, including territorial waters• Sub-national jurisdiction (state or provincial in federal
nations)• Transborder movement (intended, as in pipelines, or
unintended, as in plume migration)• International agreements applicable to sequestration
sites in international waters (e.g. London Convention and OSPAR)
Territorial Jurisdiction
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Competition and discrepancies between different mandates, philosophies and approaches of:
• Development/Energy ministries/departments – “you can do it unless explicitly forbidden” ☺
• Environment ministries/departments/agencies, which tend to be more restrictive – “you can’t do it unless explicitly allowed”
Organizational Jurisdiction
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1. Property (Legal): The right to engage in a particular lawful activity on your property
2. Regulatory: Permission to engage in that particular activity if certain conditions are being met
3. Liability: Who assumes the risks and who is responsible in case of failure
Differences betweenLegal, Regulatory
and Liability Aspects
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1) Ownership of subsurface rights: the right to use the land for various purposes, including storage of various substances including wastes (subject to applicable regulations)– State, Crown, government – Free holders
2) Ownership of surface rights: access and construction of facilities, third party access, tresspassing
3) Right to give or deny to others rights to engage in a particular activity, subject only to the State’s right of eminent domain
Property/OwnershipIssues
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4) Severed estates in the case of split rights to petroleum, natural gas and/or coal
5) Large footprint of CO2 sequestration operations, covering land owned by different owners (state/crown and free holders)
Unitization and/or expropriation, where legislation exists
Property/OwnershipIssues
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6) Ownership of the pore space and mineral rights– Lessees of mineral rights (PNG) usually do not own the pore
space and do not have the right to inject/dispose of CO2 except when used as part of an mineral extraction process (enhanced oil or gas recovery)
7) Granting of CO2 disposal/storage rights (e.g., in Alberta)- Under Mines and Minerals Act?- Under the Oil and Gas Act?- Under the Water Act?- Under a new, currently inexistent act?
Property/OwnershipIssues
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8) Granting by the Crown/State/Free Holder of rights to dispose/store CO2– Finite and scarce resource (storage/pore space)– Permanent disposal of rights, unlike mineral leases– Current lack of charges for granting these rights– Competition and primacy between sequestration & disposal
rights and other mineral rights, co-optimization of resources• Fossil fuel production for energy security and revenue, vs• CO2 sequestration for greenhouse gas emission reduction
Property/OwnershipIssues
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9) In the case of CO2 storage/disposal in oil and gas reservoirs without the objective of enhanced recovery: – Acquisition of mineral rights to the incremental hydrocarbon
recovery that will likely be triggered by the CO2 storage operation – Lack of charges for the grant of these rights
10) In the case of CO2 storage/disposal in deep saline aquifers (e.g., in Alberta):– Relinquishment/return to the land owner of the rights to any
mineral (e.g., oil and/or gas) resources discovered during the exploration, characterization and implementation stages of a CO2 storage/disposal operation
Property/OwnershipIssues
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11) Current storage/disposal rights (e.g., in Alberta):– For fluid wastes (industrial, municipal)– For oilfield waste– For natural gas– For “fluid mineral substances” obtained from a mineral by
processing or otherwise (e.g., acid gas)
There is no legislation for allowing sequestration of CO2 originating from other industrial processes and sources such as power plants
Property/OwnershipIssues
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12) Surface rights– The operator must obtain separate consent from the surface
owner, or– Obtain right of entry from the Surface Rights Board (in
Alberta) or equivalent regulatory body, including compensation– SRB (in Alberta) has authority regarding access for mineral
rights, energy conservation and linear access (pipelines, transmission lines and telephone lines). It may cover wells drilled for enhanced recovery or acid gas disposal, but not necessarily for the storage of CO2 from an industrial source
Property/OwnershipIssues
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• Purpose of CO2 injection: enhanced hydrocarbon recovery or direct sequestration
• Origin, type and level of impurities in the CO2 stream (H2S, NOx, Sox, etc.)
• Application and permitting/approval process• Operational and post-operational monitoring and
remediation (the “what?” and “how often?”)
Regulatory Issues
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• Some North American jurisdictions, like Alberta in Canada, have already in place a regulatory framework for CO2 transportation and injection, for both enhanced oil recovery and acid gas disposal, that can be adapted and/or adopted for the operational phase of CO2sequestration
• New regulations for well injection are being developed in some jurisdictions (e.g., Environmental Protection Agency in the U.S.)
• There is need for the development of a post-operational (post-injection) regulatory framework, and there are proposals and model statutes developed by the Interstate Oil and Gas Compact Commission (IOGCC)
Regulatory Status
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• Liability during CO2 capture, transportation and injection is well covered by existing legislation, regulations and practices
• Post-operational liability needs to be established– Who assumes the physical, material and financial risks?– Who is responsible for risk mitigation and for remediation in case
of failure?
Liability along the CO2 Capture and
Sequestration Chain
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• Geomechanical – During InjectionOpening of pre-existing faults and/or fracturesRock fracturingFault activationInduced (micro)seismicityGround movement (subsidence or heaving)
Regulations and current practices should control and/or stop these from occurring
• Hydrodynamic – Mainly post-injection – Flow of displaced brine into shallow aquifers– Migration and/or leakage of CO2 out of the storage unit
Possible Effectsof CO2 Injection
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o Acute – sudden, short, high rate (e.g., well blowouts, pipeline rupture) – are easily and quickly detected and remediated
o Chronic – slow, low rate, prolonged (e.g., leakage into groundwater or seepage at surface) – may not be detected easily and may be difficult to remediate
Leakage Types
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o Global – return of sequestered CO2 back to the atmosphere, thus increasing CO2 atmospheric concentrations:
Leakage rates of <1%/year are acceptable from a climate stabilization point of viewAffect GHG credits
o Local – at the point of leakage:To equityTo groundwater and water resourcesTo vegetation and animal lifeTo human health and life
Leakage Risks
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o At capture facilities, during transportation and during/at injection
This would be considered as an industrial accident, it is well covered by HSE regulations, and industry has a wealth of experience in addressing them
o From geological sequestration sites at locations other than the injection well during injection
There is no or only partial experience with this type of leakage
Leakage Sources
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o Through natural geological features such as:Discontinuities in the caprock (unknown at the time of injection)Open transmissive faultsFractures through the caprock
o Through pathways created by human activityThrough uncontrolled fractures through the caprock due to intentional hydraulic fracturing or to unintentional fracturing during injectionThrough poorly drilled, cemented, completed, abandoned and/or degraded wells
Leakage Pathways
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Natural Gas Leakagethrough a Spring
in Northern Alberta
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Natural Gas Leakagethrough a Spring
in Northern Alberta
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Shallow gas escaping from new borrow pit floor
Shallow Gas Leakage in Northwestern Alberta
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Natural Gas Leakageat Hot Pots, Alberta
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Model of Gas Migrationin Shallow Aquifers
in Northwestern Alberta
Drift-filled buried valleys intersect the caprock and deep saline aquifers
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Leakage Pathways along Faults and Fractures
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Leakage Pathwaysalong Wells
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Leakage Pathwaysin a Well
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Abandoned WellLeaking Brine and Gas
near Peace River, Alberta
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Gas Bubblingat Surface Casing Weld
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Brine and Gas Leaking Wellnear Peace River, Alberta
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Well World Distribution
From IPCC SRCCS, 2005 End of 2004
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Possible Local-scaleEffects of CO2 Leakage
• Contamination of energy and mineral resources (oil and gas reservoirs, Pb-Zn deposits, etc.)
• Contamination of shallow potable groundwater resources– by CO2 itself– by mobilized heavy metals
• Asphyxiation of vegetation and of life-forms in low-lying areas with no atmospheric-dispersal mechanisms (wind)
• Human health effects depending on CO2 concentration
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Vegetation Kill by CO2on Mammoth Mountain, California
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Vegetation Kill by CO2on Mammoth Mountain, California
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Relation between Risk of Leakage
and Liability During CO2 Sequestration
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Effect of Various Trapping Mechanisms
on the Security of CO2 Sequestration
From IPCC SRCCS, 2005
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1) Legal Liability by operator or another party to those who suffer harm as a result of the CO2sequestration operation, particularly slow or catastrophic leakage
2) Remedial Liability by the operator to take remedial action in case of leakage
3) Credit/Accounting Liability that may accrue for atmospheric release of CO2 in a emission-constrained national and international framework (this is more of a financial/economic risk and liability)
Types of Liability Issues
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1) Long term liability after cessation of injection, individually or joint, to take care of leaks
– Operator – Credit owner– Land owner– The State
2)Third party transfer of liability during and/or after the active injection phase as a result of mergers, acquisitions and/or bankruptcy
3) Longevity of the liable party, orphan CO2 sequestration sites, and ultimate transfer to the state
Legal and RemedialLiability Issues – The Who?
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Liability purpose:
– Monitoring– Remediation in case of leakage
– Financial indemnification in case of harm to third party
Legal and RemedialLiability Issues – The “What”
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Membership in theInterstate Oil and Gas Compact
Commission
The IOGGC Proposed Model
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1) The States or Provinces should retain regulatory authority for CO2sequestration
2) Existing regulatory framework for oil and gas production, including EOR, and for natural gas storage and acid gas disposal can be adopted/adapted for the active phases of CO2 storage
3) The post-injection period should have a Closure Phase and a Post-Closure Phase
4) Before cessation of CO2 injection, the operator should submit an abandonment and monitoring plan during the Closure Phase, which has to be approved by the regulatory agency
5) …
IOGCC’sSuggested Regulatory Frameworkfor CO2 Geological Sequestration
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5) Prior to the end of the Closure Phase the operator should submit an abandonment and monitoring plan to the regulatory agency, which should be approved by the latter
6) The operator retains liability during the active and closure phases and for abandoned wells and facilities during these periods The regulatory agency takes over long term monitoring and liability for only those wells and facilities transferred to the regulatory agency at the end of the Closure Phase
7) Operational and performance bonds are released to the operator at the end of the Closure Phase
8) The CO2 emitter pays into a fund for Post-Closure monitoring and remediation a set fee per tonne of stored CO2 to cover costs associated with monitoring and remediation after closure
IOGCC’sSuggested Regulatory Framework
for CO2 Geological Storage
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Stages in CO2 Sequestrationand Operational and Long-term Liability
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• The risks posed by CO2 sequestration are manageable
• Current uncertainty about the legal and regulatory framework that will apply to CCS projects means that industry is unlikely to invest in the technology and financial institutions won’t assume lending risks
Policy makers need to establish the legal frameworkRegulators will establish the regulatory framework!
Concluding Remarks