Phase 2.1 Report DOE Award: DE-EE0002777 AltaRock Energy, Inc. March 10, 2014 Contributing Authors AltaRock Energy Trenton T. Cladouhos, Susan Petty, Yini Nordin, Geoff Garrison, Matt Uddenberg, Michael Swyer, Kyla Grasso Consultants and Sub-recipients Paul Stern (PLS Environmental) Eric Sonnenthal (LBNL) Dennise Templeton (LLNL) Pete Rose (EGI) Gillian Foulger and Bruce Julian (Foulger Consulting) Acknowledgment: This material is based upon work supported by the Department of Energy under Award Number DE-EE0002777. Disclaimer: This report was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor any agency thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference herein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not necessarily constitute or imply its endorsement, recommendation, or favoring by the United States Government or any agency thereof. The views and opinions of authors expressed herein do not necessarily state or reflect those of the United States Government or any agency thereof. Table of Contents Table of Figures ............................................................................................................................................ iii Table of Tables ............................................................................................................................................. ix Appendices .................................................................................................................................................... x 1 Introduction .......................................................................................................................................... 1 1.1 Project Description ........................................................................................................................ 1 1.2 Summary of Phase 1 Accomplishments ........................................................................................ 2 1.3 Phase 2.1 Goals and Purpose ........................................................................................................ 3 1.4 Next Steps ..................................................................................................................................... 4 2 Phase 2.1 Installation and Operations .................................................................................................. 5 2.1 Permitting ..................................................................................................................................... 6 2.2 Public Outreach ............................................................................................................................. 8 2.3 Borehole Completion and Microseismic Array Installation .......................................................... 8 2.4 Seismometer Network Installation ............................................................................................. 22 2.5 Wellhead Installation .................................................................................................................. 24 2.6 High Pressure Stimulation Pumps and Flow-Lines ...................................................................... 27 2.7 Pad 29 Water Storage ................................................................................................................. 31 2.8 Backup Water Supply Pipeline .................................................................................................... 34 2.9 Electrical and Controls ................................................................................................................ 36 2.10 Flowback equipment ................................................................................................................... 41 2.11 Diverter Staging .......................................................................................................................... 42 3 Stimulation .......................................................................................................................................... 47 3.1 Stimulation Timeline ................................................................................................................... 47 3.2 High Pressure Pump Performance .............................................................................................. 48 3.3 Water Supply Performance ......................................................................................................... 51 3.4 Distributed Temperature Sensing ............................................................................................... 53 3.5 Wellbore Condition at Approximately 6850 Feet bgs ................................................................. 57 3.6 Well Head Pressure, Flow, Diverter Injection, and Multistage Stimulation ............................... 59 3.7 Tracer Injection ........................................................................................................................... 63 3.8 Microseismicity ........................................................................................................................... 64 3.9 Attempts to Flow the Well .......................................................................................................... 68 3.10 Environmental Monitoring .......................................................................................................... 70 3.11 Road Crossing Remediation ........................................................................................................ 79 4 Collaboratorative Work ...................................................................................................................... 81 Newberry EGS Demonstration Project, Phase 2.1 Report, Draft Final i 4.1 4D Imaging of Fluid Migration by combined MT/CSAMT, Gravity, Interferometric Radar, Microseismicity ....................................................................................................................................... 81 4.2 Thermal-Hydrological-Mechanical (THM) Simulations ............................................................... 83 4.3 Borehole Fluorimeter Prototype ................................................................................................. 96 4.4 Mechanical Properties of Intact Rock and Fractures in Newberry Welded Tuff ........................ 97 4.5 Micro-seismic Interpretation Via Matched Field Processing ...................................................... 98 4.6 Data Sharing – National Geothermal Database System ........................................................... 102 5 EGS Reservoir Characterization ........................................................................................................ 103 5.1 Induced Seismicity .................................................................................................................... 103 5.2 Seismic RIsk and mitigation ...................................................................................................... 122 5.3 Distributed Temperature Survey .............................................................................................. 124 5.4 THM Modeling of stimulation ................................................................................................... 131 5.5 Mineralogy/alteration of microseismic Depths ........................................................................ 132 5.6 Conclusion ................................................................................................................................. 135 6 2013 Field work ................................................................................................................................. 136 6.1 Casing Integrity Evaluation and Injection Test .......................................................................... 136 6.2 Casing Integrity Evaluation ....................................................................................................... 137 6.3 Injection Test ............................................................................................................................. 145 6.4 Surplus Casing Evaluation ......................................................................................................... 147 7 Phase 2.2: 55-29 Well Repair And Restimulation ............................................................................. 150 7.1 Permitting ................................................................................................................................. 150 7.2 Casing Repair ............................................................................................................................. 150 7.3 Integrity Test ............................................................................................................................. 151 7.4 Ream Hole and Set Liner ........................................................................................................... 151 7.5 Well Restimulation .................................................................................................................... 151 7.6 Risks, Lessons Learned and