华北潜山油藏地热能评价及综合利用实践

The Practice on Assessment and Integrated Utilization of Geothermal Energy in Huabei Buried-hill Reservoir

为合理评估油藏中蕴含的地热能、高效率地将热能转化为电能、提高地热能的利用效益,开展了华北潜山油藏地热能评价及综合利用研究。研究主要内容包括热储资源量评价、地热能发电及直接利用状况、大排量提液及降低能耗试验研究。通过上述研究,准确评价了华北潜山油藏的地热资源储量,改进了热储体积法的计算公式,优化了发电系统与直接利用系统的流程,提高了进站地热流体温度和原油采收率,降低了新型提液装置的能耗。通过对地热能的利用,可替代燃油4479 t,CO_2排放量减少1673×10~4kg、SO_2排放量减少5.42×10~4kg。

To reasonably assess the geothermal energy,efficiently transform the low-grade thermal energy to high-grade electricity power and enhance the utilization benefit,the research on assessment and integrated utilization of geothermal energy in Huabei buried-hill reservoir is conducted.This study mainly includes:the assessment of geothermal reservoir,the research on electricity pow-er generation by geothermal energy and direct use of the energy,the research on lifting the liquid by high flow rate and reducing the energy consumption.Through the study above,we precisely assessed the geothermal reservoir,improved the calculation formula of reservoir volumetric method,optimized the process of electricity power generation system and direct use system,increased the temperature of entrance geothermal fluid,enhanced the oil recovery rate and reduced the energy consumption of new equipment for lifting the liquid.By utilizing the geothermal energy,4479 t fuel oil is substituted.Furthermore,this project results in the CO_2 and SO_2 emission reduction of 16,730,000 kg and 54,200 kg respectively.