The scope of translation covers oil production engineering, oil and gas field development, oil and gas reservoir, oil and gas layer physics, oil and gas water seepage mechanics, oil field applied chemistry, petroleum refining, oil and gas processing, natural gas processing, oil and gas storage and transportation machinery, oil and gas production machinery, oil and gas processing machinery, drilling machinery, oil pollution control, oil and gas field engineering machinery, petroleum geology, oil exploration, oil and gas field survey, drilling engineering, oil and gas storage and transportation, oil and gas field construction engineering, offshore oil and gas field exploration and development, petroleum industrial economy, petroleum bidding and tendering, etc.; due to high technicality and strict requirements on terms, it belongs to the category of our professional translation.