Many land and subsea oil operations rely heavily on distributed temperature sensing for improved safety and functionality in harsh environments. Lightera optical fiber solutions ensure reliable performance and durability in high-temperature, high-pressure, and hydrogen-rich environments. For fiber interrogation up to 15 km, well and pipeline operators can now measure — in near-real time — an entire wellbore or pipeline span with a resolution of 1 meter or less using Raman-based backscatter methods. But for long-distance needs of up to 60 km, Lightera single-mode optical fibers offer resistance against the harshest environments in the industry, and are also compatible with Brillouin backscatter interrogation equipment.