Abstract
Abstract Description ChevronTexaco believes that global climate change is an important issue and is taking action to address it in a comprehensive way. We recently made publicly available our corporate-wide system for estimating greenhouse gas emissions and energy utilization. This paper specifically focuses on the advantages of using a systematic, auditable energy and greenhouse gas (GHG) management system in a mature oilfield. Material in this paper is based on our experience in using Chevron Texaco's SANGEATM Emissions Estimating System at upstream locations in the North Sea and worldwide. Results, Observations and Conclusions A credible, systematic approach, such as the SANGEATM Emissions Estimating System, provides strategic value to mature fields that are facing increasing constraints on greenhouse gas emissions and increasing energy costs. By having a rigorous and verifiable inventory of greenhouse gas emissions, operators can demonstrate to government and nongovernmental organizations how greenhouse gas emissions change over time as a field ages. In addition, energy utilization and greenhouse gas emission information can be used to guide investments, in order to achieve the maximum energy efficiency and greenhouse gas emissions minimization per barrel produced. Applications ChevronTexaco's new system, the SANGEATM Emissions Estimating System, is an automated, electronic data management information system that is designed to gather monthly energy and greenhouse gas emissions data from worldwide exploration and production, refining and marketing, petrochemicals, transportation and coal activities. ChevronTexaco Corporation and its Chevron, Texaco and Caltex facilities enter data to calculate greenhouse gas emissions and energy utilization on a monthly basis. Energy and greenhouse gas emission estimates are reported to ChevronTexaco Corporation each quarter. Technical Contributions The SANGEATM Emissions Estimating System is now publicly available. ChevronTexaco is making the system available free of charge in order to promote standardization of methodologies, and to improve comparability of greenhouse gas inventory information across the petroleum industry worldwide. We believe that widespread use of the SANGEA(tm) software will help provide a standard methodology for our industry. The American Petroleum Institute and several petroleum companies around the world have requested review copies of the software system.
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