关键词: 海外油气田, 勘探开发项目, 评价方法, 指标体系, 模糊数学模型

Abstract: The first key step for Chinese petroleum companies to go abroad and take part in the international competition is to choose the proper projects. The exploitation procedure for new oil-gas investment projects includes information acquisition, data collection, quick screening, technical and economical evaluation, decision-making, bidding, negotiation, tracking to takeover and can be divided into three stages of opportunity study, evaluation and decision-making, negotiation and takeover. The quick screening methods used in the opportunity study of new projects are applied to examine the key factors for restricting projects based upon company investment policies and to screen out some projects for further technical and economical evaluation according to the advantages and technical difficulties of projects. Different project types need the different technical and economical evaluation ways. For the new projects of oilfield development, the net reserves and potentiality evaluation are taken as the core, and the project benefits will be evaluated on the basis of contract model, development engineering study and development risk analysis. The integrative evaluation and sequencing method for new projects is based on the establishment of evaluating parameter system and realized by using mathematical model of fuzzy integrative evaluation according to the key technical and economical parameters for influencing the projects.

Key words: overseas oil-gas field, exploration and development project, evaluation method, parameter system, fuzzy mathematical model