Economic Evaluation Of Carbon Dioxide Fracturing In Yanchang

Under the reservoir conditions in Northern Shaanxi,conventional fracturing methods can not achieve ideal results.It is difficult and costly to use carbon dioxide for fracturing operation,which is not suitable for oil and gas field production under all reservoir conditions.However,due to the limited geological conditions,the lack of water resources and the extension of oil's carbon dioxide gas source,the advantages of low capture cost,and under the current economic and technological conditions,the worldwide carbon dioxide fracturing is generally carried out in some wells,or some well groups on fracturing construction,not in accordance with a complete project idea,large-scale construction in the oil field Therefore,few people carry out systematic overall evaluation for carbon dioxide fracturing project.Therefore,it is necessary to discuss the economic evaluation of carbon dioxide fracturing.In this paper,the economic evaluation of carbon dioxide fracturing in Yanchang oil field is explored.Firstly,the whole process of carbon capture,fracturing and burial in Yanchang oil field is summarized,and the possible carbon dioxide fracturing is emphasized,which is more economical than the traditional way.After that,the development and application of CO₂ fracturing economic evaluation at home and abroad are reviewed.It is found that there is little complete economic evaluation of this innovative technology in the past research.From the perspective of traditional economic evaluation theory,this paper discusses the foreshadowing effect of life cycle evaluation and carbon emission trading theory on the following economic evaluation.Based on the theory,the applicability of NPV method,real option method and cost-benefit method to carbon dioxide fracturing,the economic evaluation object of this paper,is explained.After that,based on the analysis of the whole process economic evaluation model of carbon dioxide capture,fracturing and burial,a cost-benefit model of economic evaluation based on the whole process evaluation model is constructed,which is suitable for prolonging the oil carbon dioxide fracturing.Finally,the economic efficiency of carbon dioxide fracturing single well is calculated through an example.The results show that the extended oil carbon dioxide fracturing is economic,and the fracturing production increase and carbon storage and storage are all achieved ideal results.