Evaluating offshore technologies for produced water management using GreenPro-I-a risk-based life cycle analysis for green and clean process selection and design

The GreenPro-1 methodology is applied to a case study for offshore produced water management. In the first stage, 14 best available technologies (BAT) for treatment of produced water are evaluated individually using cradle-to-gate life cycle analysis. In the second stage, seven treatment strategies are developed from BAT and are further investigated. A treatment strategy that combines a hydrocyclone and produced water re-injection proved to be the best system among selected strategies. The combination of hydrocyclone and adsorption was found to be the next best treatment strategy. Two other noteworthy strategies were membrane and centrifuge combination, and down-hole separation and injection.