Chemical and Process Engineering Solution from the Industrial Engineering Area of ConceptDraw Solution Park is a unique tool which contains variety of predesigned process flow diagram symbols for easy creating various Chemical and Process Flow Diagrams in ConceptDraw DIAGRAM. Oil And Gas Production Facilities Diagram April D. Schroer operates a consulting company focused on project engineering, project management, and production facilities design and optimization.She has more than 20 years of experience in the oil, gas and refining industries in project engineering and management, engineering design and operations, process safety management, and facility optimization. An oil facility encompasses the equipment between the oil wells and the pipeline or other transportation system. The purpose of an oil facility is to make the oil ready for sale to the purchaser's standards (maximum allowable water, salt, and other impurities). This article describes the key equipment and functions found in an oil facility.