Abstract: A method of cleaning a wellbore that may include pumping a process fluid through a flameless heating unit, controlling the flameless heating unit to heat the process fluid to a temperature in a range sufficient to chemically alter or induce phase change(s) to one or more deposits disposed in the wellbore, and transferring the process fluid from the flameless heating unit into the wellbore. Other steps may include using the heated process fluid to operate a tool, optionally by wireline operations, operatively disposed in the wellbore, whereby the heated process fluid and the tool work collectively to affect the removability of deposits. The flameless heating unit may include an internal combustion engine, a dynamic heat generator operatively connected to the internal combustion engine, and one or more pumps configured to provide a discharged fluid to the dynamic heat generator.

Abstract: A system for flameless heating, wherein the system includes a modular flameless heating unit located on a singular skid. The modular flameless heating unit includes an internal combustion engine, a dynamic heat generator operatively connected to the internal combustion engine. Further, the system includes a pump being responsive to the operation of the internal combustion engine, whereby the pump is configured to provide a discharged fluid to the dynamic heat generator. Further still, the system includes a process outlet transfers the heat into a wellbore in order to affect removability of one or more deposits disposed within the wellbore.

Abstract: A method of cleaning a pipeline that may include the steps of pumping a process fluid through a flameless heating unit, preheating the process fluid before it enters a dynamic heat generator, controlling the flameless heating unit to heat the process fluid to a temperature in a range sufficient to melt deposits disposed in the pipeline, and transferring the process fluid from the flameless heating unit into the pipeline. Other steps may include using the heated process fluid to operate a tool operatively disposed in the pipeline, whereby the heated process fluid and the tool work collectively to melt and clear the deposits. The flameless heating unit may include an internal combustion engine, a dynamic heat generator operatively connected to the internal combustion engine, and a pump configured to provide a discharged fluid to the dynamic heat generator.