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IES SW Fracking Event Mark Broomfield Ricardo-AEA
1.
www.ricardo-aea.com © Ricardo
plc 2012 Managing the environmental risks of fracking 8 October 2014 Dr Mark Broomfield Specialist Consultant
2.
2 © Ricardo
plc 2014 Overview There is a lot of concern and conflicting information/opinions about fracking … Does that mean we should not exploit unconventional hydrocarbons? … What should we be concerned about? … What can we do about those concerns? Can the environmental impacts be understood and managed? What would shale gas development look like? Environmental and health preliminary risk assessment Priority areas for regulation Can impacts be controlled? Further research Managing the environmental risks of fracking
3.
3 © Ricardo
plc 2014 Shale gas and oil extraction in the UK today Beckingham, Nottinghamshire Wytch Farm, Dorset The only site in the UK where fracking for oil production has taken place in the past 5 years Hydraulic fracturing is not a new activity High volume hydraulic fracturing is a new activity Defined as >1,000 m3 fluid per stage
4.
© Ricardo plc
2014 4 Stages in shale gas field development Stage 1: Site identification & preparation Stage 2: Well design, drilling, casing & cementing Stage 3: Technical hydraulic fracturing Stage 4: Well completion, management of wastewater Stage 5: Well production (refracturing may be carried out) Stage 6: Well abandon-ment Exploration Appraisal Exploitation Stages in shale gas well development
5.
5 © Ricardo
plc 2014 Well pad during hydraulic fracturing New York State DEC, 2011
6.
6 © Ricardo
plc 2014 Well pad during production phase Photograph: Chesapeake Energy Corp
7.
7 © Ricardo
plc 2014 Associated infrastructure Photograph: Noah Addis, Public Source www.publicsource.org Photograph: J and DR Pew
8.
8 © Ricardo
plc 2014 Associated infrastructure Redd compressor station, Pennsylvania Houston Gas processing and cryogenic plant, Pennsylvania Photographs: marcellus-shale.us and MarkWest Energy Partners LP
9.
9 © Ricardo
plc 2014 Associated infrastructure Produced water storage facility, Texas Photograph: Eastern Research Group
10.
10 © Ricardo
plc 2014 Shale gas field during production phase From www.fractracker.org
11.
11 © Ricardo
plc 2014 23 – 65 trillion m3 of gas in the Bowland shale –Much less than this would be economically recoverable Annual consumption in the UK: 0.09 trillion m3 290 – 1100 million tonnes of oil in Weald basin; no shale gas potential –10% - 35% of estimated North Sea reserves UK Shale gas reserves are much thicker than US reserves, so will need new techniques What could shale gas development in the UK look like? Scottish central belt –1.4 – 3.8 trillion m3 gas –400 – 1500 million tonnes oil UK Shale gas reserves are much thicker than US reserves, so will need new techniques
12.
12 © Ricardo
plc 2014 Institute of Directors 2013 “each £1 million of capex and opex leads to the creation of 20 jobs in total (direct, indirect and induced).” Up to 50 operating rigs, with up to 400 laterals drilled per year Estimated investment up to £3.7billion per year, resulting in 74,000 jobs created nationally with a peak in 2028 Peak annual production: c.44% of current annual consumption What could shale gas development in the UK look like?
13.
13 © Ricardo
plc 2014 What could shale gas development in the UK look like? Shale gas production scenarios 0204060801001201400123456789102010201520202025203020352040 Cumulative production (billion m3) Annual production (billion m3 per year) Annual: MidAnnual: LowCumulative: MidCumulative: Low
14.
14 © Ricardo
plc 2014 Environmental impacts
15.
15 © Ricardo
plc 2014 European Commission study DG ENV commissioned an initial assessment of the environmental and health risks and impacts associated with the use of hydraulic fracturing. Study aims To enable objective evaluation of potential impacts To support legislative gap analysis at European level To identify priority areas for future research Comprehensive study: Literature review and consultation Risk screening and prioritisation Regulatory gap analysis Industry and regulatory mitigation measures Extended to apply to State of Maryland Also considered downstream infrastructure Evaluation of Best Practical Measures Evaluation of confidence/uncertainty
16.
16 © Ricardo
plc 2014 Environmental and health preliminary risk assessment: Individual well Environmental aspect Project phase Site identification and preparation Well design drilling, casing, cementing Fracturing Well completion Production Well abandonment and post- abandonment Overall rating across all phases Individual site Groundwater contamination Not applicable Low Moderate- High High Moderate- High Not classifiable High Surface water contamination Low Moderate Moderate- High High Low Not applicable High Water resources Not applicable Not applicable Moderate Not applicable Moderate Not applicable Moderate Release to air Low Moderate Moderate Moderate Moderate Low Moderate Land take Moderate Not applicable Not applicable Not applicable Moderate Not classifiable Moderate Risk to biodiversity Not classifiable Low Low Low Moderate Not classifiable Moderate Noise impacts Low Moderate Moderate Not classifiable Low Not applicable Moderate – High Visual impact Low Low Low Not applicable Low Low-moderate Low - Moderate Seismicity Not applicable Not applicable Low Low Not applicable Not applicable Low Traffic Low Low Moderate Low Low Not applicable Moderate
17.
17 © Ricardo
plc 2014 Environmental and health preliminary risk assessment: Cumulative Environmental aspect Project phase Site identification and preparation Well design drilling, casing, cementing Fracturing Well completion Production Well abandonment and post- abandonment Overall rating across all phases Cumulative Groundwater contamination Not applicable Low Moderate- High High High Not classifiable High Surface water contamination Moderate Moderate Moderate- High High Moderate Not applicable High Water resources Not applicable Not applicable High Not applicable High Not applicable High Release to air Low High High High High Low High Land take Very high Not applicable Not applicable Not applicable High Not classifiable High Risk to biodiversity Not classifiable Low Moderate Moderate High Not classifiable High Noise impacts Low High Moderate Not classifiable Low Not applicable High Visual impact Moderate Moderate Moderate Not applicable Low Low-moderate Moderate Seismicity Not applicable Not applicable Low Low Not applicable Not applicable Low Traffic High High High Moderate Low Not applicable High
18.
18 © Ricardo
plc 2014 Environmental and health preliminary risk assessment: Cumulative; With BPMs Environmental aspect Project phase Site identification and preparation Well design drilling, casing, cementing Fracturing Well completion Production Well abandonment and post- abandonment Overall rating across all phases Cumulative Groundwater contamination Not applicable Low Low- Moderate Low- Moderate Low- Moderate Not classifiable Moderate Surface water contamination Low Low Moderate Moderate Low Not applicable Moderate Water resources Not applicable Not applicable Moderate Not applicable Moderate Not applicable Moderate Release to air Low Moderate Moderate Moderate Moderate Moderate Moderate Land take Very high Not applicable Not applicable Not applicable High Not classifiable Very High Risk to biodiversity Moderate Low Moderate Low Moderate Not classifiable Moderate Noise impacts Low Moderate High Not classifiable Low Not applicable High Visual impact Moderate Moderate Moderate Not applicable Low Low-moderate Moderate Seismicity Not applicable Not applicable Low Low Not applicable Not applicable Low Traffic Low Low High Moderate Low Not applicable High
19.
19 © Ricardo
plc 2014 Environmental and health preliminary risk assessment findings Enables regulatory attention to be focused on key risks Cumulative impacts require consideration at initial stages of exploration Very high: Land take (not expected to be so high in UK) High: Groundwater contamination risk, accidents/spillages, water resources, air pollution, noise, traffic Management of groundwater contamination risks is critical: Systematic processes needed to characterise geological conditions 600 m separation between fracturing zone and groundwater Quality and monitoring of casing and cementing is key Baseline environmental monitoring required Lack of data on impacts of repeated fracturing or induced seismicity on well integrity Flowback water treatment/re-use/disposal in the UK Best practice measures reduce, but do not eliminate, environmental risks Priority areas for future research Biodiversity impacts Long-term post-abandonment phase
20.
20 © Ricardo
plc 2014 Managing the environmental risks of fracking Are there reasons to be concerned? There are real and unfamiliar environmental and health risks The risks are not yet fully understood Risks and impacts can be mitigated, but not fully eliminated To frack, or not to frack – is no longer an environmental question To frack safely or not is the question We have a long history of managing industrial pollution Robust planning and regulatory controls are needed and available We have the opportunity to prepare: oBaseline surveys oSpecific regulatory frameworks Webinar coming up in December on risk management
21.
21 © Ricardo
plc 2014 Mark Broomfield Specialist Consultant, Ricardo-AEA Ricardo-AEA Chadwick House Birchwood Park Warrington WA3 6AE t: +44 (0)7815 682083 e: mark.broomfield@ricardo-aea.com w: http://www.ricardo-aea.com
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