姚店油田氮气泡沫采油技术研究

The study of nitrogen foam Production technique in YaoDian oilfield

姚店油田属于低孔、低渗、低压、低饱和油藏,前期开发全部采用压裂求产,依靠自然能量溶解气驱开采,由于地层能量得不到及时补充,产量递减较快,稳产基础不稳固。为提高单井产量和稳产能力,在分析采油区地质和开发特征的基础上,本文对氮气泡沫采油技术的应用可行性进行了分析,并对泡沫驱油剂进行了筛选实验,通过比较实验得出研制的LH-X Ⅲ起泡剂具有很好的高温性能,并对氮气泡沫采油技术的现场应用效果进行了分析评价。

The production energy of YaoDian oilfield depends on dissolve gas natural energy,so the fracturing producing method is employed preliminarily.But the stratum energy can not supply in time,the yield decreases quickly.On the basis of the analysis of the geologic and producing feature in the area,the feasibility of nitrogen foam production technique and application result is analyzed and evaluated in order to improve individual-well producing rate and production rate-maintenance capability.