摘要
临汾致密气井采用排水采气工艺,井口高压节流易发生冰堵风险,目前采用真空加热炉加热后节流的解决方案。但是,致密气井压力衰减速度快,导致真空加热炉使用周期短、利用率低,且体积和质量大,设备搬迁困难。为此研究电磁加热、催化式红外加热、涡流管加热、石墨烯加热等新技术在致密气井的适用性,首先对比分析了各项加热技术的优缺点,建立了以加热功率和温度为边界的选型图版。其次,提出了含水致密气加热功率计算方法,并建立了加热技术选型流程。最后结合现场生产工况,热毯式电磁加热技术覆盖5~160 k W、0~95℃的工况范围,能够满足现场加热需求,且设备体积和质量小、拆装便捷、加热效率高,可减小设备投资、提高设备利用率。建立的加热技术边界图版和选型方法流程,可为致密气井加热技术选型提供支撑,从而实现降本增效、节能减排的目标。
The tight gas well in Linfen adopts drainage gas recovery technology,and the high pressure throttle at the wellhead is easy to cause the risk of ice blockage.At present,the solution of throttle after heating in vacuum heating furnace is adopted.However,the pressure decay rate of tight gas wells is fast,resulting in a short service cycle and low utilization rate of vacuum heating furnaces.Moreover,due to the large volume and weight of vacuum heating furnaces,it is difficult to relocate equipment.Therefore,the applicability of electromagnetic heating,catalytic infrared heating,vortex tube heating,graphene heating and other new technologies in tight gas wells is studied.Firstly,the advantages and disadvantages of each heating technology are compared and analyzed,and the selection chart with heating power and temperature as the boundary is established.Secondly,the calculation method of water-containing tight gas heating power is proposed,and the selection process of heating technology is established.Finally,combined with the on-site production conditions,the hot blanket electromagnetic heating technology covers the working range of 5~160 k W,0~95℃,which can meet the on-site heating needs,and the equipment is small in size and weight,convenient disassembly and installation,high heating efficiency,which can reduce equipment investment and improve equipment utilization.The established heating technology boundary map and selection method process can provide support for tight gas well heating technology selection,so as to achieve the goal of cost reduction and efficiency increase,energy saving and emission reduction.
作者
刘永超
路天玥
刘京
刘根
刘刚
何晓鹏
魏盛涛
高锡成
LIU Yongchao;LU Tianyue;LIU Jing;LIU Gen;LIU Gang;HE Xiaopeng;WEI Shengtao;GAO Xicheng(Institute of Engineering Technology,Petrochina Coalbed Methane Co.,Ltd.,Xi'an,Shaanxi 710082,China;School of Petroleum Engineering,Xi'an Shiyou University,Xi'an,Shaanxi 710065,China)
出处
《石油工业技术监督》
2024年第2期56-61,共6页
Technology Supervision in Petroleum Industry
关键词
致密气井
井口节流
加热技术
应用边界
选型流程
tight gas well
wellhead throttling
heating technology
application boundary
selection process
