Drivers behind improving energy efficiency at any industrial site include environmental legislation, company policy, process optimization, cost reduction and not least the need to control the generation of Green House Gas (GHG) emissions. Energy efficiency assessments were carried out at a number of Total E&P UK Limited (TEPUK) sites, on and offshore. The assessment of each site followed a set format which include certain key steps; project kick off, full site survey and discussions, with operations and support staff. The assessments allow site specific action plans with short and long term improvements to be formulated and implemented. Analysis of cost, operability, maintainability, environmental impact, safety and security of supply has been used to justify and prioritize actions to be implemented. Recommendations for improvement differ greatly between sites, however there is a re-occurring recommendation to calculate and monitor energy performance indicators for each facility. Development of this indicator gives an operational baseline to measure process changes and improvements against. Close monitoring of changes against baseline provides additional feedback for process and cost optimization strategies.The value of energy efficiency assessments with regards to cost effective operation and process optimization should not be overlooked. Significant energy savings are achievable through detailed investigation -approximately 3-5% fuel savings are achievable through implementation of the "quick win" changes. Benefits are not only visible in process and associated costs. Environmentally, the reduction of energy consumption has a positive effect on GHG emissions and reduces the overall environmental impact of operations.
Total has been strongly involved in GHG emissions reduction since several years, initially focusing on flaring reduction: all new projects since 2000 are designed with no continuous flaring and more globally, flaring will be reduced by 50% from 2004 to 2012. Second step of emissions reduction is to focus on combustion: consumptions will exceed wasted energy (flares, vent, losses) in the next years as a result of actions taken to cut by half gas flaring on one hand and evolving characteristics of assets portfolio: mature fields, LNG, extra heavy oils on the other.As part of the whole picture of Total involvement against climate change, the need to reduce energy consumption, mainly fuel gas, has led Total E&P to set up an energy efficiency action plan for affiliates and new projects.Energy efficiency assessment methodology developed with a specialized contractor is described, with a focus on 2007 pilots: Anguille field in Gabon (mature oil field under redevelopment with flaring reduction aspect) and Elgin (North Sea gas field under European legislation) in UK. Energy assessments deployment over major Total EP affiliates in 2008 is presented. The paper will show how these assessments aim at drawing a base line, defining and implementing energy efficiency plans in affiliates through listed and ranked efficiency enhancement opportunities, also at defining best practices at corporate level, and thus proposing in the near future quantified objectives of improvement.Energy efficiency assessment of affiliates not only leads to savings in energy consumptions, and reduction of emissions but also provide business opportunities through better products monetization. And in parallel to improvements on existing operations, a best in class design on new developments will ensure a global improvement of energy use in a near future.
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