Beach Sea Oilfield Development Of Economic Analysis And Evaluation

Beach oilfield development is a dynamic process of adjustment, involving oceanic engineering and its supporting project construction stage, well-drilling stage, crude oil exploitation stage and the definition of economic boundaries and so on. Each stage's input is on the basis of its following exploitation stage's largest output. The paper tightly encloses each stage of beach oilfield development, analyzing its input-output circumstance, setting up appropriate economic models of analysis and evaluation: at oceanic engineering and its supporting project construction stage, presents investment estimation model of sea-engineering construction, making sure that we should use sea oil & land exploitation method when oil-bearing layer is in the region that the depth of water is relatively shallow and the distance from offshore is relatively near, use sea oil & sea exploitation method when oil-bearing layer is in the region that the depth of water is relatively deep and the distance from offshore is relatively far; at well-drilling stage, with trend forecast and correlation analytical method, the paper analyzes influencing factors of well-drilling investment, sets up well-drilling complex cost model, carries factor analysis on the model; at the stage of oil exopoitation, through analyzing the composing of running cost and defining parameter in beach oilfield development, the paper sets up single oil-well's running cost model and unit operating cost 's grey prediction model; in order to study economic boundary of beach oilfield development, the paper sets up the throughput construction investing limitation model, the single oil-well's throughput limitation model, the benefit outputs' analytical model, determining technologic-economic limitation of beach oilfield development, providing benefit outputs' distinguishing methods, taking single-factor susceptible analysis and double-factor susceptible analysis to these models.The paper takes each stage of beach oilfield development as the main clew, sets up corresponding mathematic-economic models. Through surveying investment and cost by these models, confirm technologic-economic limitation, and carries on susceptible analysis. This dynamical economic analysis and evaluation which taking model quantitative analysis as principal method and taking qualitative analysis as secondary method provides strong scientific basis for decision-making in beach oilfield development, have great significance of adjusting production, reducing cost, enhancing benefit.