scholarly journals Novel Photocatalytic Reactor Development for Removal of Hydrocarbons from Water

2008 ◽  
Vol 2008 ◽  
pp. 1-7 ◽  
Author(s):  
Morgan Adams ◽  
Ian Campbell ◽  
Peter K. J. Robertson

Hydrocarbons contamination of the marine environment generated by the offshore oil and gas industry is generated from a number of sources including oil contaminated drill cuttings and produced waters. The removal of hydrocarbons from both these sources is one of the most significant challenges facing this sector as it moves towards zero emissions. The application of a number of techniques which have been used to successfully destroy hydrocarbons in produced water and waste water effluents has previously been reported. This paper reports the application of semiconductor photocatalysis as a final polishing step for the removal of hydrocarbons from two waste effluent sources. Two reactor concepts were considered: a simple flat plate immobilised film unit, and a new rotating drum photocatalytic reactor. Both units proved to be effective in removing residual hydrocarbons from the effluent with the drum reactor reducing the hydrocarbon content by 90% under 10 minutes.

2020 ◽  
Vol 60 (2) ◽  
pp. 646
Author(s):  
Shane A. Morrissy ◽  
Asher J. Mortimer ◽  
Preben Nielsen

Hydrate management is a pervasive challenge for the offshore oil and gas industry. The consequences of a hydrate blockage in a flowline can be significant due to deferred production and additional expenditure to remediate a blockage. A common hydrate management strategy for gas-condensate systems is to avoid hydrate formation using a thermodynamic inhibition strategy. Towards end of field life, costs associated with inhibiting produced water can increase OPEX and CAPEX. The reduced production and increased costs associated with hydrate avoidance can create economic pressure to discontinue production. An alternative to this is to consider a commercial risk-based hydrate management strategy, which can result in considerable OPEX and CAPEX savings, making marginal developments economic. A case study on the adoption of a successful risk-based hydrate management strategy is presented. The goal was to maximise production from a declining asset to deliver incremental business value. Historically a hydrate avoidance strategy had been used; to continue with hydrate avoidance would have needed further capital outlay to manage the produced water from the declining reservoir. It was determined that during normal operation, hydrate risk could be managed without the need for continuous injection of a hydrate inhibitor. Further, in the event of an unplanned shutdown, where the hydrate risk is greater, it was also demonstrated that the production system could be restarted with minimal intervention.


2021 ◽  
Author(s):  
Ning Lou ◽  
Ezra Wari ◽  
James Curry ◽  
Kevin McSweeney ◽  
Rick Curtis ◽  
...  

This research identifies key factors, or safety culture categories, that can be used to help describe the safety culture for the offshore oil and gas industry and develop a comprehensive offshore safety culture assessment toolkit for use by the US Gulf of Mexico (GoM) owners and operators. Detailed questionnaires from selected safety culture frameworks of different industries were collected and analyzed to identify important safety culture factors and key questions for assessment. Safety frameworks from different associations were investigated, including the Center for Offshore Safety (COS), Bureau of Safety and Environmental Enforcement (BSEE), and the National Transportation Safety Board (NTSB). The safety culture factors of each of these frameworks were generalized and analyzed. The frequency of the safety culture factors in each framework was analyzed to explore commonality. The literature review and analysis identified a list of common factors among safety culture frameworks.


Author(s):  
Tom Ivar Pedersen ◽  
Håkon Grøtt Størdal ◽  
Håvard Holm Bjørnebekk ◽  
Jørn Vatn

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