Environmental Statement
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Jackdaw Field Development Environmental Statement D/4260/2021 [THIS PAGE IS INTENTIONALLY BLANK] JACKDAW FIELD DEVELOPMENT PROJECT STANDARD INFORMATION SHEET STANDARD INFORMATION SHEET Project Name Jackdaw Field Development Block and Licence Nos Blocks 30/02a, 30/03a DEEP, and 30/02d OPRED Reference No D/4260/2021 Type of Project Development of the Jackdaw ultra-high pressure / high temperature (uHPHT) gas condensate field via a new wellhead platform (WHP) tied-back to the existing Shearwater host platform. Undertaker BG International Limited (an affiliate of Shell UK Limited) Shell U.K. Limited, 1 Altens Farm Road, Nigg, Aberdeen, AB12 3FY Licensees/ Owners Co-venturers % Holding BG International Limited 74 ONE-Dyas E&P Limited 26 Short Description The Jackdaw field is an uHPHT reservoir that will be developed with a not permanently attended WHP. Four wells will be drilled at the Jackdaw WHP. Produced fluids will be exported via a subsea pipeline to the Shearwater platform where these will be processed before onward export via the Fulmar Gas Line and the Forties Pipeline System. The proposed development may be summarised as follows: ◼ Installation of a new WHP; ◼ Drilling of four production wells; ◼ Installation of a new approximately 31 km pipeline from the Jackdaw WHP to the Shearwater platform; ◼ Processing and export of the Jackdaw hydrocarbons via the Shearwater host platform; and ◼ First production expected between Q3 - Q4 2024. Key Dates Activities Date Drilling of wells Q3 2022 - Q4 2023 Installation of platform jacket Q3 2022 Installation of topsides and export pipeline Q3 2022 - Q1 2024 First production Q3/Q4 2024 Significant No significant environmental or socio-economic impacts identified after Environmental Effects implementation of mitigation measures. Identified Statement Prepared By Shell U.K. Limited and Genesis Oil and Gas Consultants Ltd. Company Job Title Relevant Qualifications/ Experience Shell U.K. Limited Environmental Team Lead - > 20 years’ working in environment/oil and gas Projects Jackdaw Project 19 years’ working in environment/oil and gas Environmental Advisor Genesis Oil and Gas Senior Consultant > 20 years’ working in environment/oil and gas Consultants Environmental Engineer Consultant Environmental 12 years’ working in environment/oil and gas Engineer i JACKDAW FIELD DEVELOPMENT PROJECT STANDARD INFORMATION SHEET [THIS PAGE IS INTENTIONALLY BLANK] ii JACKDAW FIELD DEVELOPMENT PROJECT TABLE OF CONTENTS CONTENTS Standard Information Sheet…………………………………………..……………………..... i Non-Technical Summary………………………………………………………………………. vi Acronyms………………………………………………………………………………………..... xxiii 1 Introduction………………………………………………...……………………………………. 1-1 1.1 Project Overview and Purpose………………………………………………………............. 1-1 1.2 Project Scope……………………………………………………………………………………. 1-2 1.3 Scope of the Environmental Statement……………………….……………………………. 1-3 1.4 Legislative Overview……………………………………………………………………………. 1-3 1.5 Shell UK Environmental Management System………….………………………………….. 1-6 1.6 Environmentally Critical Elements……………………………………………………………. 1-9 1.7 Consultation……………………………………………………………………………………… 1-9 1.8 Additional Studies……………………………………………………………………………….. 1-9 2 Project Description……………………………………………………………………...………. 2-1 2.1 Development Overview……………………………………………………………………….. 2-1 2.2 Schedule………………………………………………………………………………………….. 2-2 2.3 Field and Reservoir Characteristics………………………………………………………….. 2-2 2.4 Production Profiles………………………………………………………………………………. 2-4 2.5 Analysis of Alternatives…………………………………………………………………………. 2-8 2.6 Wells and Drilling………………………………………………………………………………… 2-20 2.7 Jackdaw Wellhead Platform………………………………………...……………………..… 2-27 2.8 Pipelines and Subsea Infrastructure…………………………………………………………. 2-37 2.9 Jackdaw Fluids Processing and Export at Shearwater…………..……………………… 2-42 2.10 Support Vessels………………………………………………………………………………..… 2-47 2.11 Project Uncertainties……………………………………………………………………...……. 2-48 2.12 Possible Future Expansion or Modification………………………………………………..… 2-48 2.13 Decommissioning……………………………………………………………………………..… 2-48 3 Baseline Environment…………………………………………………………………………... 3-1 3.1 Introduction…………………………………...…………………………………………………. 3-1 3.2 Environmental Baseline Surveys………………………………………………………………. 3-1 3.3 Physical Environment…………………………………………………………………………… 3-4 3.4 Biological Environment………………………………………………………………………… 3-24 3.5 Conservation…………………………………………………………………………………….. 3-45 3.6 Socio-economic Environment…………………………………………………………….….. 3-50 4 Impact Assessment Methodology…………………………………………………………… 4-1 iii JACKDAW FIELD DEVELOPMENT PROJECT TABLE OF CONTENTS 4.1 Introduction………………………………………………………………………………..…….. 4-1 4.2 Impact Identification and Aspects………………………………………………….………. 4-1 4.3 Assessment of Impact Significance…………………………………………………….…… 4-4 4.4 Impact Mitigation……………………………………………………………………………..… 4-8 5 Physical Presence……………………………………………………………………………..… 5-1 5.1 Sources and Nature of Project Impact……………………………………………………… 5-1 5.2 Sensitivity of Receptors……………………………………………………….………………… 5-1 5.3 Physical Presence Impact Assessment………………………………………………..…….. 5-2 5.4 Management and Mitigation Measures……………………………………….…………… 5-7 6 Seabed Disturbance…………………………………………………………………...………. 6-1 6.1 Sources and Nature of Project Impact……………………………………………………… 6-1 6.2 Sensitivity of Receptors…………………………………………………………………………. 6-10 6.3 Seabed Disturbance Impact Assessment………………………………………………….. 6-12 6.4 Cumulative and Transboundary Effects………………………………………………..…… 6-16 6.5 Management and Mitigation Measures……………………………………………….…… 6-17 7 Emissions to Air……………………………………………………………..…………………….. 7-1 7.1 Source and Nature of Project Impact……………………………..………..……………… 7-1 7.2 Sensitivity of Receptors……………………………………………………………………..….. 7-5 7.3 Quantification of Emissions Associated with the Jackdaw Project………..…………... 7-6 7.4 Emissions to Air Impact Assessment…………………………………………………..……… 7-21 7.5 Management and Mitigation Measures…………………….……………………………… 7-26 8 Discharges to Sea………………………………………………………..……………………… 8-1 8.1 Sources and Nature of Project Impact……………………………………..………………. 8-1 8.2 Sensitivity of Receptors……………………………………………………………………….... 8-8 8.3 Discharges to Sea Impact Assessment……………………………………………..………. 8-10 8.4 Management and Mitigation Measures.…………………………………………………… 8-18 9 Underwater Noise……………………………………………………………………………….. 9-1 9.1 Introduction……………………………………………...………………………………………. 9-1 9.2 Source and Nature of Project Impact……………..……………………..………………… 9-1 9.3 Sensitivity of Receptors………………………………………………………………..……….. 9-3 9.4 Underwater Noise Impact Assessment……………………………………………………… 9-5 9.5 Management and Mitigation Measures……………………………………………………. 9-14 10 Waste Generation and Management……………………………………………..………. 10-1 10.1 Introduction…………………………………………………………………………..………….. 10-1 10.2 Waste Generation……………………………………………………………………...………. 10-1 10.3 Waste Disposal Onshore…………………………………………………………………..…… 10-6 iv JACKDAW FIELD DEVELOPMENT PROJECT TABLE OF CONTENTS 10.4 Management of Waste…………………………...…………………………………………… 10-8 10.5 Management and Mitigation Measures……………………………………………………. 10-10 11 Accidental Events…………………………………………………………………………..…... 11-1 11.1 Sources of Accidental Releases……………………………………………………………… 11-1 11.2 Spill Modelling...........................…………………………….……………………………..…… 11-2 11.3 Impact Assessment...................……………………………………………………..………… 11-14 11.4 Major Environmental Incident Assessment……………..……………………..…………... 11-30 11.5 Susceptibility to Natural Disasters ……………………………………………………………. 11-33 11.5 Management and Mitigation Measures……………………………………………….…… 11-33 11.6 Conclusions……………………………………………………………………………………….. 11-34 12 Environmental, Social and Health Management Plan…….………………………….…. 12-1 12.1 Commitments Register…………………………………………………................................. 12-1 12.2 Monitoring……………………………………………………………………………...………… 12-1 13 Conclusions………………………………………………………………………………………. 13-1 13.1 Environmental Impact Assessment: Requirements and Purpose………………….…… 13-1 13.2 Environmental Effects………………………………………………………………………..…. 13-1 13.3 Overall Conclusion…………………………………...…………………………………..…….. 13-2 14 References…………………………………………………………………………………..…… 14-1 A Scotland’s National Marine Plan…………………………………………………………..…. A-1 A.1 Scotland’s National Marine Plan…………………………………….……………………..… A-1 A.2 Marine Strategy Framework Directive (MSFD)……………………….……………..……… A-5 A.3 Oil and Gas Marine Planning Policies……………………………………………………..… A-7 B Consultation Register…………………………………………………………………………… B-1 C Jackdaw Production Profiles………………………………………………………………….. C-1 C.1 The Jackdaw Field Development Plan Production Forecast……………...……………. C-1 D Aspects and Impacts Register, and Scoping Matrix……………………………………… D-1 v JACKDAW FIELD DEVELOPMENT PROJECT NON-TECHNICAL SUMMARY NON-TECHNICAL SUMMARY BACKGROUND The Jackdaw field is an ultra high pressure high temperature (uHPHT) gas condensate field. It lies in blocks 30/02a, 30/02d and 30/03a DEEP1 of the United Kingdom Continental Shelf (UKCS) in a water depth of approximately 78 m (Figure 1). The field is located in the central North Sea (CNS), approximately 250 km east of Aberdeen, 30 km south-east of the Shearwater platform and adjacent to the UK/Norway median line as shown in Figure 1 below. Figure 1 Location of the Jackdaw Project. BG International Limited, an affiliate of Shell U.K. Limited (referred to throughout this report as ''Shell'' on behalf of itself and its co-venturer ONE-Dyas E&P Limited) proposes to develop the Jackdaw field using a not permanently attended wellhead platform (WHP) tied back via a 31 km subsea pipeline to the Shearwater