Study On Post-Evaluation Of Economic Benefits For Oil And Gas Field Development And Construction Project

Post-evaluation plays an important role in project management. The development and construction of oil and gas fields which is regarded as an important pillar industry of China has become the main artery of national economy. Petroleum is non-renewable; Oil and gas field development and construction projects have large investment and long life cycle and the objects of these projects are usually underground resources. All these lead to high risk and how to make the implementation and operation of oil and gas field development and construction project maximize their efficiency has attracted the concern of the world. With more and more attention, Post-evaluation of oil and gas field development and construction projects summarize the decision-making, construction and implementation, production management and project impact and sustainability in areas such as inductive analysis and look for solutions of the problems which are found in the projects. The experience, success and lessons can be learned as reference for similar projects which are carried out in future.Based on the analysis of domestic and foreign scholars and some organizations'research ,this paper make definition for post-evaluation and analysis the necessity and role of post-evaluation in oil and gas field development and construction projects, the theoretical framework and contents of post-evaluation at each stage are carried out at the same time. This paper emphasis on the post-evaluation of economic benefits for oil and gas field development and construction projects, including the contents, selection of some methods and evaluation index system as well as other aspects of the system discussed in detail.After analysing and summarizing the original evaluation index system, the actual EVA index which can better reflect the profitability of the project is considered into the evaluation index system. So, the evaluation index system will be more realistic and practical. In the paper, LJ Oilfield in SL Oilfield Company L (mn) block development and construction projects is real example which gives actural data for the reasearch. The reaearch is consisted analysis of main four aspects which are structural changes of investment, comparative cost, project profitability calculation, financial and project management risk evaluation. At the end of the paper, the gray system theory and fuzzy comprehensive evaluation method are carried into the comprehensive economic post-evaluation for oil and gas field development and construction projects. The actual case in the model and detailed analysis verify the integrity of the evaluation system. And through the calculation, the revised evaluation system is more objective and reality which could make better response to the actual profitability of the project.In the reaearch, practice and theory are combined, qualitative and quantitativer analysis are complementary, all these are carriy out in the analysis which make the index system more practical and reasonabl.The real data of LJ Oilfield in SL Oilfield Company L (mn) block makes the reaearch more realistic. The content of the research can provide more practical reference to similar oil and gas field development and construction project which will be carried out later.