Authors : K. Thiruvenkatasamy and Fasihur Rahman
Abstract: During the oil and gas production process, a considerable amount of contaminated water is produced which is estimated to account about 70-90% depending on the geographical location and geological features of the oil field. This study describes the three stages of separation primary production, secondary recovery and tertiary recovery and discusses the challenges associated with the separation of produced water from oil and gas production. The study explores various hydrocarbons, produced solids, metals and radioactive materials as well as pollution issues related to the separation stage. Although, several technologies are used for the separation process, two techniques, three phase separation technology by using hydro cyclone and centrifugal separators are discussed. The opportunities and challenges as they relate to disengagement and processing are discussed. It analyses pollution prevention strategies and suggests incorporating life cycle assessment and process integration in resolving P2 issues related to produced water. Recommendations have been made for the constitution of a P2 committee involving professionals with chemical engineering, mechanical engineering, environmental scientists and economic realm. The study suggests for aggressively pursuing P2 strategy by conducting LCA (process to process) and carrying out studies on process integration for reducing the volume of produced water.
K. Thiruvenkatasamy and Fasihur Rahman, 2018. Pollution Prevention Challenges in the Production Process (Separation and Processing) of Oil and Gas Industry. Journal of Engineering and Applied Sciences, 13: 8086-8096.