Abstract: In order to solve the problem between sand control and production capacity in unconsolidated sandstone oilfields, this paper proposes the concept of dynamic sand control technology, develops INFILTER screen pipe available for stand-alone screen sand control, studies the anti-clogging performance of commonly used screen pipe and finds out the cause of clogging. This paper also briefs on the structure, performance indicators and working principle of INFILTER screen pipe. Lab test and field application show that the dynamic sand control technology could greatly improve the anti-clogging capacity of screen pipe, thus effectively improving well productivity, widening the application scopes of stand-alone screen sand control, reducing operation risks and costs, and providing a new method for sand control in similar formations in the future.

Key words: unconsolidated sandstone, anti-clogging, dynamic sand control, screen pipe

摘要： 为了解决海上疏松砂岩油藏防砂与产能之间的矛盾,提出了动态防砂理念,研制出了适用于独立筛管防砂完井方式的动态型INFILTER自洁防砂筛管,并对常用筛管的抗堵塞性能进行了研究,找到了易堵塞的原因。文章介绍了动态型INFILTER自洁防砂筛管的产品结构、性能指标和工作原理。室内试验和现场应用表明,动态防砂技术能大幅度提高筛管的抗堵塞能力,从而有效提高了油井产能,拓宽了独立筛管防砂完井方式的应用范围,降低了作业风险和成本,为今后同类地层防砂提供了新的手段。

关键词: 疏松砂岩, 抗堵塞能力, 动态防砂, 筛管