Oilfield water‑jacket crude heater is the most widely‑used conventional wellhead heating device for onshore oilfields. It heats crude oil via indirect water‑jacket heat exchange with stable performance and low failure rate, applied at single‑well wellheads and metering stations to raise crude oil temperature, reduce viscosity and avoid wax deposition and pipeline blockage under low temperature. As typical Crude Oil Heater, it can combine with Crude Oil Heat Exchanger to build multi‑stage heating process for heavy‑oil wells with high viscosity. Thermal output from the heater can supply heat tracing for Single Well Oil Storage Tank to realize integrated well‑site “heating‑storage” workflow. With great heat‑source compatibility, it supports external connection with Solid‑state Energy Storage Heating Equipment, Multi‑energy Coupled Crude Oil Heating Equipment and New Energy Zero‑carbon Heating Equipment for mutual standby and intelligent switch between gas‑fired combustion and new‑energy h…