SPE Online Education
The Technology to Drill High Temperature Geothermal Wells at Scale
Recorded On: 12/16/2021
Enhanced and Advanced Geothermal Systems (EGS and AGS) are new methods of creating geothermal installations that have already been demonstrated to potentially increase electric power production by a factor of greater than 10 when compared with more conventional methods. Some involve fracturing the rock between injector and producer wells, and some rely on drilling wells to convey closed loop fluid systems to take heat from the rock.
Many such systems are emerging, with subtly different designs, and they are attracting a lot of funding and excitement. But compared with conventional hydrothermal wells, they are technically challenging to drill. In particular, very accurate well positioning, allowing deep wells to intercept each other to create closed loop systems, will be required for the most advanced well designs to succeed. The oil and gas industry already has the ability to drill accurate directional wells. This capability to position the well is potentially directly transferable to some of the first EGS and AGS wells because they are likely to be drilled at temperatures familiar to oil and gas drillers. But in order to make EGS and AGS wells more economically interesting, they will need to be drilled at higher temperatures which are currently beyond the capabilities of oil and gas drilling, completions and production equipment.
This webinar will discuss technologies that already exist in adjacent industries that will allow us to develop our capabilities to drill and complete high temperature wells in order to drive geothermal development – the challenges, the opportunities, and where the “sweet spot” is likely to be in the near term based not only on the limitations of the components we will need to develop drilling equipment but also on the likely limitations of tubulars, completions, and other aspects of well construction.
This webinar is categorized under the Drilling and Health, Safety, Environment, and Sustainability technical disciplines.
All content contained within this webinar is copyrighted by John Clegg and its use and/or reproduction outside the portal requires express permission from John Clegg.
CTO, Hephae Energy Technology
For more than 33 years John Clegg has worked in multiple countries in engineering, manufacturing, sales and operations with upstream technologies including drill bits, drilling motors, rotary steerable tools, measurement-while-drilling, logging-while-drilling and managed pressure drilling. He holds a Master’s degree in Engineering Science and a Diploma in Global Business, both from Oxford University, England. He has 14 patents, has authored multiple papers and is working on the foundation of a new Geothermal Technical Section for SPE as well as sitting on the Program Committee for the IADC/SPE Drilling Conference and the SPE Drilling Advisory Committee. John is the CTO of Hephae Energy Technology, developing the high-temperature drilling technology that will be needed for geothermal wells, and has just written his first book on innovation, to be published in September 2021.
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