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Amended Liberty Development and Production Plan (DPP)

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Amended Liberty Development and Production Plan (DPP) LIBERTY DEVELOPMENT PROJECT DEVELOPMENT AND PRODUCTION PLAN Amendment 3 Originally Submitted: December 30, 2014 Amendment 1: September 8, 2015 Deemed Submitted: September 18, 2015 Amendment 2: March 15, 2017 Amendment 3: May 26, 2017 SUBMITTED TO: Bureau of Ocean Energy Management Alaska OCS Region 3801 Centerpoint Drive, Suite 500 Anchorage, AK 99503 SUBMITTED BY: Hilcorp Alaska, LLC. 3800 Centerpoint Drive, Suite 1400 Anchorage, AK 99503 This page intentionally blank Liberty Development and Production Plan Table of Contents TABLE OF CONTENTS 1 EXECUTIVE SUMMARY ............................................................................................................. 1 2 INTRODUCTION .......................................................................................................................... 3 2.1 Liberty Project History .................................................................................................................. 3 2.1.1 1996 – 2002 Plans ........................................................................................................................................ 3 2.1.2 2002 – 2012 Plans ........................................................................................................................................ 6 2.1.3 2012 – 2014 Plans ........................................................................................................................................ 6 2.2 Project Overview ............................................................................................................................ 7 2.3 Location ........................................................................................................................................... 7 2.4 Project Objectives ........................................................................................................................... 9 2.5 Permits and Approvals ................................................................................................................... 9 3 SCHEDULE .................................................................................................................................. 13 3.1 Project Review Phase .................................................................................................................... 14 3.1.1 Preliminary Engineering ............................................................................................................................ 15 3.1.2 Permit Review and Approvals, Project Sanction ....................................................................................... 15 3.2 Project Execution Phase ............................................................................................................... 15 3.2.1 Detailed Engineering .................................................................................................................................. 16 3.2.2 Ice Road Construction ................................................................................................................................ 16 3.2.3 Mine Site Development .............................................................................................................................. 17 3.2.4 Island Construction .................................................................................................................................... 17 3.2.5 Pipeline Installation .................................................................................................................................... 17 3.2.6 Facilities Construction ............................................................................................................................... 18 3.2.7 Drilling Operations..................................................................................................................................... 18 3.2.8 Production Operations ................................................................................................................................ 19 3.2.9 Decommissioning ....................................................................................................................................... 19 4 SUBSURFACE: GEOPHYSICS, GEOLOGY, RESERVOIR DEVELOPMENT ................... 21 4.1 Seismic Data .................................................................................................................................. 21 4.1.1 Time Versus Depth Chart ........................................................................................................................... 21 4.2 Geology and Reservoir Description ............................................................................................. 22 4.2.1 Reservoir Rock Properties .......................................................................................................................... 28 4.2.2 Reservoir Fluid Properties .......................................................................................................................... 28 4.2.3 Estimate of Recoverable Reserves ............................................................................................................. 28 4.3 Reservoir Development Plan ........................................................................................................ 28 4.4 Predicted Rate Profile ................................................................................................................... 30 4.5 Shallow Hazards ............................................................................................................................ 30 5 ACCESS TO PROJECT AREA ................................................................................................... 33 5.1 Access Needs and Modes .............................................................................................................. 33 5.1.1 Road System .............................................................................................................................................. 34 5.1.2 Ice roads ..................................................................................................................................................... 34 5.1.3 Marine Access ............................................................................................................................................ 35 5.1.4 Air Access .................................................................................................................................................. 37 5.1.5 Surface Transportation ............................................................................................................................... 38 Hilcorp Alaska, LLC Page i Amended May 26, 2017 Liberty Development and Production Plan Table of Contents 5.2 Access by Project Phase ................................................................................................................ 38 5.2.1 Construction Phase ..................................................................................................................................... 38 5.2.2 Access during the Drilling Phase ............................................................................................................... 39 5.2.3 Production Operations Access ................................................................................................................... 40 5.2.4 Access during Decommissioning ............................................................................................................... 40 5.3 Support Vessels and Aircraft ....................................................................................................... 40 5.4 Island Access Air Emissions ......................................................................................................... 45 6 ARTIFICIAL GRAVEL ISLAND ............................................................................................... 51 6.1 Island Design Basis ....................................................................................................................... 52 6.1.1 Environmental Factors ............................................................................................................................... 52 6.1.2 Technical Factors ....................................................................................................................................... 54 6.2 Design Features, Island Structure ............................................................................................... 54 6.3 General Island Shape and Layout ............................................................................................... 58 6.4 Design Advantages, Impact Mitigation ....................................................................................... 58 6.5 Island Construction ...................................................................................................................... 59 7 PIPELINE SYSTEM .................................................................................................................... 63 7.1 Pipeline Corridor .......................................................................................................................... 63 7.2 Offshore Pipeline Design .............................................................................................................. 66 7.2.1 Design Basis ..............................................................................................................................................
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