Study On The Cost Analysis System Of Oilfield Block On The Basic Of Reservoir Life Cycle

At present,most oil fields in east China have been on the middle and final development stage and the proportion of the high-cost production is growing.Under the guidance of the Reservoir Management theory,the cost management on the basic of the blocks has been promoted in the oil fields and it achieved good results.However,the cost analysis is still the weak part in the whole cost management system.In the current low oil price environment,establishing an effective cost analysis system to control the full cost has become an important strategic choice for the oil industry.On the basis of organizing the literature relating to the reservoir management,cost management and cost analysis,the thesis summarized the relevant theories and the present research situation and made the theoretical basis clear.At the same time,the thesis analyzed the current cost management situation of the oil field,and found that it had some problems,such as the full cost analysis is not perfect,the cost analysis methods and stages are limited,the lack of the cost characteristics analysis and so on.Based on this,in combination with the operation of the oilfields,the thesis builds the cost analysis system of oilfield block on the basic of reservoir life cycle.The cost analysis system of oilfield block on the basic of reservoir life cycle includes three parts.The first part is the fundamental analysis by stages.The content of this part is to analyze the production target and the cost,including the cost characteristic analysis and the cost comparison analysis,cost trend analysis and so on.The second part is the comprehensive analysis of the full cost.The content of this part is to do the cost trend analysis and the cost comparison analysis,combined with the cost driver analysis,to analyze the reason for the cost difference and optimize the cost.The third part is the cost characteristic analysis for the management decision making.Based on the decision objective,this thesis choose three cost characteristic,cost sensitivity,cost controllability and cost relevance to analyze to support the decision making process of the oil field.Based on this,this thesis applies this cost analysis system to the SD oilfield block and proposes some suggestions to make the system can be used effectively,such as to build the full cost management idea,strengthen the comprehensive budget system and strengthening cost dynamic management and so on.