Cherokee Nation Procurements #164953

Drill and test one geothermal well for the Cherokee Heritage Center

Cherokee Nation Cultural & Economic Development, L.L.C. is seeking a contractor to drill and test a geothermal well at the Cherokee Heritage Center in Park Hill, Oklahoma. - Buyer and location - Cherokee Nation Cultural & Economic Development, L.L.C., identified as part of Cherokee Nation Businesses; the attachment also names the Cherokee Heritage Center as the project site. - Park Hill, Oklahoma. - Requested work - Drill one vertical test borehole, approximately 500 feet deep and 4.5–6 inches in diameter, and log cuttings every 10 feet or at changes in formation. - Install one 1.25-inch thermally enhanced HDPE U-bend loop with a factory-fused bottom bend, then tremie-grout the borehole with thermally enhanced bentonite grout. - Conduct a continuous Thermal Response Test (TRT) for at least 48 hours after grout curing. The project scope describes typical heat injection of 15–25 watts per foot and automatic recording of heat injection, flow, and entering/leaving fluid temperatures at intervals no greater than 10 minutes. - Provide an engineering report with the driller’s log, as-built well diagram and measurements, thermal analysis, and design recommendations. - Products and manufacturers - The project calls for one specified 1.25-inch HDPE U-bend assembly; grout and quantities for other piping or materials are not specified. - Phillips and Enlink are named in the geothermal piping specification as manufacturers of purpose-designed U-bend fittings. No specific manufacturer or part number is prescribed for the project’s requested assembly. - Notable technical requirements - The attached geothermal piping specification also covers compatible HDPE pipe and fittings, grout, pipe-entry sleeves or elbows, pressure/leak testing, flow balancing, and as-built/GPS well records. It specifies a minimum 40-hour thermal conductivity test for that specification; the project-specific scope instead requires at least 48 continuous hours for its TRT. - The bidder is to propose the work-completion duration. The scope calls for at least 48–72 hours of grout curing before the TRT. - Utility coordination through Okie811 is identified in the project requirements.

Description

Cherokee Nation Cultural and Economic Development, L.L.C. is soliciting pricing to drill, log, and test a geothermal test well at the Cherokee Heritage Center to evaluate underground thermal properties and geothermal yield potential. The work includes drilling one vertical borehole to a nominal depth of 500 feet, installing and grouting a thermally enhanced HDPE U-bend loop, and conducting a Thermal Response Test after the grout cures. The contractor must record drilling and test data and provide an engineering report with an as-built well diagram, thermal analysis, and design recommendations. Bids are due October 21, 2026, at 4:00 PM; a mandatory pre-bid meeting is scheduled for October 13, 2026.

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