Feasibility discussion on clean energy utilization process in oilfields under background of carbon peaking and carbon neutrality
Oilfield enterprises are major energy consumers in the energy industry.Using clean energy to replace fossil fuels consumed in oil fields and reducing carbon emissions in oil fields can effectively help achieve China's carbon peaking and carbon neutrality goals.Based on the characteristics of energy consumption structure and resource conditions in oil fields,the application conditions,construction investment,operating costs,and carbon emissions of clean alternative process for oil fields were analyzed,such as high-temperature produced fluid utilization,heat pump process,liquefied natural gas(LNG)process,solar energy utilization,and wind power generation,using different types of projects as examples.The results show that under the same energy consumption,the comprehensive cost per Kilowatt of the water source heat pump process is 0.17×104 CNY/kW and LNG process is 0.40×104 CNY/kW,both have lower construction investment compared to other processes.Wind power generation and photovoltaic power generation do not generate carbon emissions.The operating costs of solar thermal,photovoltaic,and wind power generation range from 0.018×104 to 0.040×104 CNY/(kW·a),with carbon emission intensity ranging from 0 to 0.45 t/(kW·a).The three processes have lower operating costs and carbon emission intensity compared to other processes.When conditions such as high-temperature produced liquid,oilfield associated gas,and electricity are available,priority should be given to using the high-temperature produced liquid utilization and water source heat pump process with the lowest present value of cost,which are 1.20×104 CNY/kW and 1.29×104 CNY/kW,respectively.When conditions such as high-temperature production fluid and oilfield associated gas are not available,priority should be given to using LNG process and large wind turbines for power generation.Compared with small wind turbines,the economic benefits of large wind turbines for power generation are more significant,while the economic benefits of photovoltaic power generation are between large and small wind turbines.In the construction of zero carbon oil fields,priority should be given to using high-temperature produced liquid utilization and water source heat pump process to provide heat,and using large wind turbines or photovoltaics to provide electricity.
carbon peaking and carbon neutrality goalsclean energyhigh temperature produced fluidheat pumpsolar energy
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