Research On The Efficiency Of Oil Companies Based On Enhanced DEA Model

There are very important meanings for survival and development of oil field company to calculate the relative effectiveness base on certain mathematical model and give some opinions of improvement while it also matters the running of entire economics of our country.The choice of model directly affect the accuracy of efficiency.The oil field is a complex system without a lot of imformation.In order of keeping accuracy, we use DEA model to calculate the efficiency.But the traditional DEA model fail to recognize the limit of object and environment factor,so the paper design a more suitable system of changing traditional DEA model and integrated application for oil field company.It offers a solution for calculating the relative effectiveness and improvement of oil field company, and improves the feasibility of evaluate the efficiency of oil field companies.The following is the main work of this paper:1. First, it describes the background and meaning of this paper.Then it compares some methods of evaluating the efficiency of companies and figure out the fittness of DEA model.It briefly describes the theory and application of DEA model now and point out some problem.At last, it elaborated the idea and the structural arrangements of this study.2. It detailed data envelopment analysis and its relative concepts, including decision making unit, production possibility set, the concept of the production frontier, the difference between productivity and efficiency, separation of efficiency, technical efficiency and scale efficiency concept and the significance of input-oriented and output-oriented choice. Then, it expounds the basic DEA model assumptions and CCR, BCC, NIRS three basic models, and gives some examples.3. It systemicly study the problem of the basic model used to evaluate in the process, such as inconsistency of standard and non-feasibility of super-efficiency model, the oneness of model and the corresponding solutions and examples. Then it systemicly describe the problems in the traditional projection of non-variable and give some propose solutions. Finally, it research on the impact of external environmental factors, and point out how to adjust against environmental factors . For the establishment of the system for oil companies to evaluate and guide the improvement, it laid a theoretical foundation.4. First it introduced the information of a Chinese petrol company and oil field company.And then it combined the theory and practice of oil field, create a system of evaluting and improving base on several improved DEA models.Then it study the oil field companies in detail and gives the result of efficiency and the opinions for improvement.5. It points out the problem of daily management and gives some advice.6. At last, it summizes the work and gain of this paper, and point out the future study of this topic.