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Halliburton introduces new pump technology designed for geothermal

According to Halliburton, the pump will offer an “efficient, safe, and agile solution that streamlines geothermal operations and enhances overall performance.” Photo via halliburton.com

Houston-based Halliburton has introduced a new technology that is designed specifically for geothermal energy applications.

The Summit ESP GeoESP is an advanced submersible borehole and surface pump technology GeoESP lifting pumps, which address challenges related to the transport of fluids to the surface through electric submersible pumps (ESP).

According to a news release from Halliburton, the pump will offer an “efficient, safe, and agile solution that streamlines geothermal operations and enhances overall performance.”

The inlet design minimizes power consumption, protects the pump against solids, and tackles scale formation. GeoESP lifting pumps can withstand extreme conditions with the ability to operate at temperatures up to 220°C (428°F) and can resist scale, corrosion, and abrasion.

GeoESP lifting pumps also use standard pump dimensions customized to suit various geothermal well conditions. With that, Halliburton will also offer a digital approach to geothermal well management with the Intelevat data science-driven platform to empower operators with real-time diagnostics and visualizations of “smart” field data. Halliburton states the system will improve well operations, increase production, extend system run life,reduce energy consumption, and minimize shutdowns.

“With increased global focus on low carbon energy sources, we are using our many decades of geothermal production expertise to help our customers maximize safety and improve efficiency,” Vice President of Artificial Lift Greg Schneider says in the release. “GeoESP lifting pumps build upon our current system to minimize power usage and help push the boundaries of what is possible with more complex well designs.”

Recently, more Houston-based companies have invested in geothermal technologies. GA Drilling and ZeroGeo Energy, a Swiss company specializing in renewable energy, announced a 12-megawatt Hot Dry Rock Geothermal Power Plant (Project THERMO), which is the first of several geothermal power and geothermal energy storage projects in Europe.

Additionally, Fervo Energy is exploring the potential for a geothermal energy system at Naval Air Station Fallon in Nevada. Sage Geosystems is working on an exploratory geothermal project for the Army’s Fort Bliss post in Texas. The Bliss project is the third U.S. Department of Defense geothermal initiative in the Lone Star State.

The Department of Energy announced two major initiatives that will reach the Gulf of Texas and Louisiana in U.S. Secretary of Energy Jennifer M. Granholm's address at CERAWeek by S&P Global in March. The Department of Energy’s latest Pathways to Commercial Liftoff report are initiatives established to provide investors with information of how specific energy technologies commercialize and what challenges they each have to overcome as they scale.

"Geothermal has such enormous potential,” she previously said during her address at CERAWEEK. “If we can capture the 'heat beneath our feet,' it can be the clean, reliable, base-load scalable power for everybody from industries to households."

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A View From HETI

A team from UH has published two breakthrough studies that could help cut costs and boost efficiency in carbon capture. Photo courtesy UH.

A team of researchers at the University of Houston has made two breakthroughs in addressing climate change and potentially reducing the cost of capturing harmful emissions from power plants.

Led by Professor Mim Rahimi at UH’s Cullen College of Engineering, the team released two significant publications that made significant strides relating to carbon capture processes. The first, published in Nature Communications, introduced a membraneless electrochemical process that cuts energy requirements and costs for amine-based carbon dioxide capture during the acid gas sweetening process. Another, featured on the cover of ES&T Engineering, demonstrated a vanadium redox flow system capable of both capturing carbon and storing renewable energy.

“These publications reflect our group’s commitment to fundamental electrochemical innovation and real-world applicability,” Rahimi said in a news release. “From membraneless systems to scalable flow systems, we’re charting pathways to decarbonize hard-to-abate sectors and support the transition to a low-carbon economy.”

According to the researchers, the “A Membraneless Electrochemically Mediated Amine Regeneration for Carbon Capture” research paper marked the beginning of the team’s first focus. The research examined the replacement of costly ion-exchange membranes with gas diffusion electrodes. They found that the membranes were the most expensive part of the system, and they were also a major cause of performance issues and high maintenance costs.

The researchers achieved more than 90 percent CO2 removal (nearly 50 percent more than traditional approaches) by engineering the gas diffusion electrodes. According to PhD student and co-author of the paper Ahmad Hassan, the capture costs approximately $70 per metric ton of CO2, which is competitive with other innovative scrubbing techniques.

“By removing the membrane and the associated hardware, we’ve streamlined the EMAR workflow and dramatically cut energy use,” Hassan said in the news release. “This opens the door to retrofitting existing industrial exhaust systems with a compact, low-cost carbon capture module.”

The second breakthrough, published by PhD student Mohsen Afshari, displayed a reversible flow battery architecture that absorbs CO2 during charging and releases it upon discharge. The results suggested that the technology could potentially provide carbon removal and grid balancing when used with intermittent renewables, such as solar or wind power.

“Integrating carbon capture directly into a redox flow battery lets us tackle two challenges in one device,” Afshari said in the release. “Our front-cover feature highlights its potential to smooth out renewable generation while sequestering CO2.”

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