河南油田稠油热采氮气段塞热处理矿场试验

Heavy oil thermal production nitrogen slug injection field experiment in Henan oilfield

河南油田稠油热采蒸汽吞吐从1987年开始经历了24年,为提高开发效果,2011年进行了氮气段塞热处理矿场试验,周期油汽比、日产油得到相应的提高,统计了氮气段塞的阶段应用效果,分析了影响不同粘度稠油油藏氮气段塞热处理效果的因素,明确了目前氮气段塞热处理工艺的选井条件及适用范围,为下步措施工作提供依据。

Henan oilfield heavy oil thermal recovery steam soaking began in1987 and It has been carried out for 24 years. In order to improve the development effect, nitrogen slug injection thermal treatment field experiment is carried out in 2011. Periodic oil steam ratio and oil production increased relevantly. In the paper, the stage effect of nitrogen slug injection is recorded, the factors influencing different viscosity heavy oil reservoir is analyzed, which made it clear for well selection conditions and scope of application for the heat treatment technology of nitrogen slug and provide a basis for the following work.