Specialized Geothermal Wellfield Engineering & Subcontracting
Geothermal Drilling of New England (GDNE), division of T.J. Ogden Co., provides master driller expertise (MassDEP License #285) across the six New England states and eastern New York. Specializing in high-efficiency standing column wells and vertical closed loops, our crews drill deep crystalline bedrock formations to deliver permanent clean energy infrastructure for homes, commercial facilities, and institutional campuses.
Every borefield is engineered in strict accordance with IGSHPA guidelines, utilizing continuous HDPE 4710 piping, thermally enhanced bentonite grouting, and certified electrofusion vault header infrastructure. Contact our engineering office directly at 1-800-339-9051 or email info@geothermalma.net to schedule a site feasibility audit.
Technical Capabilities & Specialized Fleet Equipment
- Rotary Air-Percussion Drill Rigs: Equipped with down-the-hole (DTH) hammer tooling designed specifically for hard New England granite, schist, argillite, and gneiss.
- Standing Column Wells (SCW): Deep bedrock open-loop boreholes drilled 1,000 to 1,500 ft, delivering 30 to 40 tons of capacity per borehole for tight-footprint projects.
- Vertical Closed-Loop Arrays: Multi-well loopfields with thermally enhanced bentonite grout (k = 1.0–1.6 BTU/hr-ft-°F) and food-grade propylene glycol fluid.
- ASHRAE 1118-TRP Thermal Response Testing: Mobile in-situ TRT units measuring empirical bedrock thermal conductivity and borehole thermal resistance.
- Clean Heat Rebate Coordination: Turnkey support for Mass Save ($13,500 standard / up to $25,000 enhanced), 0% HEAT Loans, and commercial tax credits.
Specialized Service Capabilities Across New England
- Standing Column Well (SCW) Drilling: Deep open-loop bedrock boreholes maximizing thermal exchange density for compact urban lots and university campuses.
- Vertical Closed-Loop Borefields: Multi-borehole arrays with continuous IGSHPA-certified HDPE 4710 U-tubes and thermally enhanced bentonite grout.
- Formation Thermal Conductivity (TRT) Testing: Mobile 48-hour ASHRAE-compliant in-situ testing to optimize mechanical engineering loop design.
- Commercial Subcontracting: Turnkey exterior drilling partnering with mechanical HVAC engineers and general contractors.
- 2026 Clean Heat Incentive Support: Assisting clients in securing Mass Save grants ($13,500 standard / up to $25,000 enhanced), 0% HEAT Loans, and commercial clean energy tax credits.