Geothermal
Products
- Drill Pipe Size: 2 ⅞" to 8 ¾"
- Connections: Standard API and Premium Connections
- Grades: All API Grades and TSC Grades
- Accessories, Sour Service, Hardbanding, and IPC available upon request
TSC Drill Pipe provides:
- Strength retention at elevated temperatures
- Fatigue resistance under high torque and vibration
- Protection against corrosion and erosion
- Dimensional accuracy for demanding well profiles
- Manufacturing consistency for long-term reliability
These advantages position TSC as a trusted supplier for geothermal operators who need tubulars engineered not just to enter extreme environments—but to thrive in them.
We Equip the Industry for Geothermal.
FREQUENTLY ASKED QUESTIONS
What primary downhole stresses affect drill strings in geothermal drilling?
Geothermal drilling subjects drill strings to extreme downhole temperatures exceeding 500°F (260°C), highly abrasive volcanic rock formations, severe thermal expansion cycles, and corrosive steam containing H2S, CO2, and dissolved chlorides.
Which steel grades are recommended for high-temperature geothermal wells?
High-alloy, heat-treated steel grades with enhanced temper resistance are selected. These metallurgies maintain mechanical yield strength and resist hydrogen embrittlement when exposed to sustained high temperatures and sour steam.
How does thermal expansion impact tool joint connection makeup?
Extreme heat cycles cause tool joint metal expansion. Double-shoulder connections are required to provide secondary mechanical stops that prevent connection over-torquing, shoulder deformation, and thread leakage during thermal expansion downhole.
What internal coatings are suitable for geothermal downhole environments?
Standard liquid epoxy coatings break down at elevated temperatures. Geothermal drill strings utilize specialized high-temperature resin powder coatings rated for continuous service above 400°F (204°C) to prevent corrosion from geothermal condensate.
Is sour-service drill pipe mandatory if hydrogen sulfide gas is present?
Yes. When geothermal steam contains wet H2S, controlled-yield sour service metallurgy is mandatory to prevent Hydrogen Stress Cracking (HSC) and sudden catastrophic brittle failures in tension.
Equip Your Geothermal Operation
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