Study On The Evaluation System Of Sustainable Economic Efficiency In Oilfield

Based on an emergy analysis method,an evaluation system is constructed in this paper to evaluate the operation efficiency of oilfields’ ecosystem.Based on the evaluation results,we can judge the economic development trend,the environmental carrying capacity,the resource utilization efficiency and the sustainable development capacity of oilfields.The system contains 13 evaluation indicators.According to the principle of emergy analysis,some of which are innovated.for oilfield.These indicators complement and link with each other to evaluate the complex ecosystems of oilfield from four microcosmic aspects of resources,environment,society and economy.In order to test the applicability of the evaluation system,this paper collected and compiled the production,consumption and natural data of Jizhong block in Huabei oilfield from 2005 to 2014,and took these data into the sustainable economic efficiency evaluation system of oilfiled,the results show: 1)the oilfield uses large amounts of non-renewable resources,which reflects that the oilfield has entered its depletion period;2)the oilfield has invested in environmental protection,but its efficiency is low;3)the economy in this region is experiencing a steady growth,and is forecast to grow further in the future.As a result,this paper concludes that the constructed evaluation system for oilfield’s circular economy is suitable for Huabei oilfield and can be also used to analyze the sustainable development capacity for other oilfields,especially for the oilfields that have been in their depletion periods.