Reservoir construction from the Newberry Volcano EGS Demonstration

• 作者: Kyla Grasso Matt Uddenberg Michael Moore Michael W Swyer Susan Petty Trenton T Cladouhos Yini Nordin
• 来源期刊: 地下水科学与工程：英文版
• 学科: 地球科学
• 年，卷（期）: 2014,（3）
• 页码范围: 1-7
• 页数: 7页
• 分类号: P315

摘要

The Newberry Volcano EGS Demonstration in central Oregon tests recent technological advances designed to reduce the cost of power generated by EGS in a hot,dry well(NWG 55-29) drilled in 2008. An EGS reservoir was created by injecting large volumes of cold water,causing existing fractures to slip in shear(known as hydroshearing) generating the seismic waves that can be used to map fracture location and size. At the Newberry Demonstration the final injectivity ranged between 1.4 and 1.7 L/s/MPa a ~6x improvement over the initial injectivity of the well. The injectivity improvement and seismic analysis indicate that previously impermeable fractures were enhanced during the NWG 55-29 stimulation.