摘要
以油田某联合站系统为研究对象,通过减级布站方式,优化合并低负荷、高能耗的转油站,实现节能瘦身;在此基础之上,为推进油气与新能源融合和高质量发展,结合地面系统优化调整,并为后续站场实现无人值守智能化运维做准备。采用以内燃机为主体工艺的热电联供技术替代常规加热炉供热工艺,热电联供技术可将天然气单向转换为热能,转变为热电联供方式,具有高能效、低排放、低运行成本及安全性强等特点。研究结果表明:通过区域集输系统优化,将联合站减级优化合并,减少转油站运行设备数量,将主要能源消耗集中供给,所辖油井日均掺水热洗负荷下降4.8 MW,日节省天然气量约0.2×10^(4)m^(3),机泵节电约0.3×10^(4)kWh,年节约运行成本约60万元;经综合分析对比,采用热电联供技术替代加热炉供热工艺为油站分离的污水进行加热,为采出液集油提供掺水和热洗提供用水,并将产生的电供给注水站注水泵自用,技术上是完全可行的。经测算,放水站采用热电联供技术后,天然气综合利用率可由常规流程的81.2%提升至88%,在区域优化的能耗基础上,进一步降低了能耗,大幅提高了油田综合开发效益。
Taking a certain joint station system in an oilfield as the research object,low load and high energy consuming stations are optimized and merged through the method of downgrading the layout of the station,so as to achieve energy-saving and slimming.On this basis,in order to promote the integration and high-quality development of oil and gas with new energy,the ground system is optimized and adjusted,and preparations are made for the subsequent unmanned intelligent operation and maintenance of stations.The using cogeneration technology with internal combustion engines as the main process to replace conventional heating furnace heating processes is explored.The cogeneration technology can convert natural gas into heat energy in one direction,and transform it into a combined heat and power supply method.It has the characteristics of high energy efficiency,low emissions,low operating costs,and strong safety.The research results show that:by optimizing the regional gathering and transmission system,joint stations are optimized and merged through reducing the grade,the number of operating equipment in the oil transfer station is reduced and optimized,and the main energy consumption is centralized supply.The daily water mixing and hot washing load of the oil wells under the jurisdiction of the joint station is reduced by 4.8 MW,saving nearly 0.2×10^(4) m^(3) of natural gas per day,and saving nearly 0.3×10^(4) kWh of electricity for pumps,which is equivalent to saving more than 600,000 yuan in annual operating costs.After comprehensive analysis and comparison,it is concluded that it is technically feasible for the joint station to use combined heat and power technology instead of heating furnace heating process to heat the separated sewage from the oil station,provide water for blending and hot washing for the oil collection of the produced liquid,and supply the generated electricity to the internal water injection pump for self-use.According to calculations,the comprehensive utilization rate of natural gas in the water release station can be increased from 81.2%in the conventional process to 88%after adopting cogeneration technology.On the basis of regional optimization of energy consumption,the energy consumption is further reduced,the comprehensive development efficiency of the oilfield is greatly improved.
作者
吕恒
李卓嫔
LYU Heng;LI Zhuopin(School of Economics and Management,Southwest Petroleum University;Sichuan Branch of China Pacific Property Insurance Co.,Ltd.)
出处
《油气田地面工程》
2025年第6期93-98,共6页
Oil-Gas Field Surface Engineering
关键词
热电联供
区域优化
节能
新能源
combined heat and power supply
regional optimization
energy-saving
new energy
