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903 Well Site Completion and Servicing Safety
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Hot Oiling Operations

In hot oiling operations, a hot oil unit circulates heated oil or similar fluids down a well bore where it dissolves and dislodges paraffin, tar-based oils and other hydrocarbon deposits. The heated oil is circulated into piping, tubing, casing, or tanks. The image to the right displays a hot oiling truck.

Hot oiling truck that circulates fluids down well bores
Hot oiling trucks circulate heated oil or similar fluids down well bores.

Potential Hazards:

  • fire or explosion hazard from contact with flammable liquids, vapors, or gases
  • being burned by hot oil or hot oil line
  • frostbite injuries from contact with propane or propane lines
  • unexpected release of pressure

We will look at the possible solutions to the hazards in hot oiling operations in the next tab.

Knowledge Check Choose the best answer for the question.

6-8. Which of the following is a hazard associated with hot oiling operations?