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Risk-based decision-making for drilling waste discharges using a fuzzy synthetic evaluation technique
Sadiq, R.; Husain, T.; Veitch, B.; Bose, N. (2004). Risk-based decision-making for drilling waste discharges using a fuzzy synthetic evaluation technique. Ocean Eng. 31(16): 1929-1953
In: Ocean Engineering. Pergamon: Elmsford. ISSN 0029-8018, more
Peer reviewed article

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Keywords
    Drilling fluids; Heavy metals; Marine environment; Ocean dumping; Offshore engineering; Petroleum; Risk assessment; Waste disposal; Marine

Authors  Top 
  • Sadiq, R.
  • Husain, T.
  • Veitch, B.
  • Bose, N.

Abstract
    Offshore petroleum drilling wastes contain toxic substances that are potentially harmful to the marine ecosystem. Despite environmentally benign characteristics, wastes associated with synthetic-based fluids still contain a certain amount of pollutants due to contamination with formation oil and the presence of trace heavy metals in barite, which may pose risk when discharged into the marine environment. A framework is presented here for a decision support system for the selection of the best drilling waste discharge option. Uncertainties in the quantification of risk, cost and technical feasibility are expressed by fuzzy numbers. An analytical hierarchy process with a technique called fuzzy synthetic evaluation is employed to determine the best management alternative (discharge scenario).

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