Halliburton 2021 Annual & Sustainability Report Environmental 45 Support for Renewable Energy Sources In addition to using our digital capabilities, Halliburton applies our existing technologies to the renewable energy space for a greater environmental impact. Carbon Capture, Utilization, and Storage Halliburton actively participates in the carbon capture, utilization, and storage (CCUS) industry, and has developed technologies to support carbon transport and storage projects. Our capabilities include geological storage site selection and development, in addition to well repurposing, construction, and monitoring, and pipeline and subsea construction and maintenance. In 2021, Halliburton applied a unique, machine learning- based 3D model for a Japanese company to estimate the availability of pore space over large areas for CO2 storage. This model increased operational efficiency, with a fivefold reduction in time spent compared to conventional approaches, along with increased accuracy. Geothermal For decades, Halliburton has offered our advanced In Indonesia, which is the world’s top geothermal market, technologies and experience to customers developing Halliburton has supported geothermal activity for more complete geothermal solutions around the world. Our than 30 years. In this time, we have drilled and produced products and services address every aspect of developing more than 220 wells, and completed approximately 40 a geothermal energy production facility, including wells with Halliburton Project Management’s Integrated project management, drilling, cementing, fluids, logging, Services. In 2021, Halliburton continued to contribute completions, stimulation, and geofluids transfer. to the Sarulla Geothermal project. For this project, we have worked with a market leader for more than 15 Geothermal energy demand has expanded to more years to provide drilling and cementing services in the shallow-source, lower-heat applications for heating development of this clean, renewable energy source. and cooling. For electricity generation, the geothermal During this time, we helped our customer produce clean market has expanded to deeper, higher-heat sources. electricity from geothermal wells safely, efficiently, and Although these geothermal sources are much more cost-effectively, and enabled a larger number of wells to efficient in generating electricity, they require produce from a single pad for less environmental impact. advanced geothermal systems to overcome technical challenges, and Halliburton is working to service these emerging markets.