Halliburton patented a method using bentonite-based grout fluids for geothermal conduits. The grout fluid, excluding cementitious materials, sets to fix the conduit in place with specific hydraulic conductivity. This allows for efficient heating or cooling of a heat transfer fluid in the conduit. GlobalData’s report on Halliburton gives a 360-degree view of the company including its patenting strategy. Buy the report here.
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According to GlobalData’s company profile on Halliburton, Oil well fracking was a key innovation area identified from patents. Halliburton's grant share as of January 2024 was 52%. Grant share is based on the ratio of number of grants to total number of patents.
Geothermal conduit grout fluid method with bentonite-based materials
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A recently granted patent (Publication Number: US11884874B2) discloses a method for utilizing a grout fluid in geothermal applications. The method involves placing a geothermal conduit in a hole in the earth and introducing a grout fluid, primarily composed of water and a bentonite-based grout, into the space between the conduit and the hole's sidewalls. The grout fluid, which excludes certain cementitious materials, is allowed to set, fixing the conduit in place. Subsequently, a heat transfer fluid is heated or cooled by transferring heat through the set grout fluid, enabling efficient temperature regulation in geothermal systems.
The patent outlines specific compositions for the grout fluid, including the percentage of calcium carbonate, the type of bentonite (sodium bentonite), grout-setting modifiers (such as potassium chloride and ammonium sulfate), and thermally conductive materials. The method ensures that the grout fluid achieves a particular hydraulic conductivity range after setting. Additionally, the viscosity of the grout fluid and the setting time are controlled parameters. The patent also describes variations of the method, such as introducing the grout fluid into a borehole and utilizing specific materials in the grout composition. Overall, the patented method offers a detailed approach to effectively securing geothermal conduits in the earth and optimizing heat transfer processes in geothermal systems.
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GlobalData’s Patent Analytics tracks patent filings and grants from official offices around the world. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies across the world’s largest industries.
