In the past decade,fossil energy has been apparently diversified from the conventional oil and gas area to the unconventional area like tight oil/shale oil,tight gas/shale gas and underground coal gasification.As the types of oil and gas reservoirs are increased,the differences exist in the scale and grade of reserves as well as the difficulties for exploration and development and economic performance.To bring about large-scale and cost-effective development of different oil and gas reservoirs and green high-quality development,it is necessary to make an option for the future fossil energy development directions and types.This paper analyzes the change law,status quo and future development trend of the Chinese and foreign energy consumption structure,pointing out that coal and petroleum still keep the dominant position while the proportion of natural gas is on the rise year by year.Fossil energy of the different types was brought under the comparative study in terms of the main indexes,such as energy density per unit volume,scale of resource,development cost,development status and technical maturity.The results indicate that underground coal gasification is the highest for energy density and recoverable reserve with low production cost.It has some technological advantages to increase natural gas supply,accelerate green low-carbon coal industrial development and help fulfillment of the carbon neutrality goal.Underground coal gasification can be optimized as the strategic direction for unconventional oil and gas,thus opening up a new way for high-quality development.
关键词
非常规油气/发展方向/煤炭地下气化/关键属性/能量密度/资源量/开发成本
Key words
unconventional oil and gas/development direction/underground coal gasification/key attributes/energy density/volume of reserve/development cost
维普
万方数据