本文介绍一种高压密闭取心工具及技术。钻取岩心后,上提钻具,先后割心,打开气阀或关闭岩心筒下部球阀,使内筒完全封闭。工具上部设有压力调节装置,起钻途中能自动补充内筒的压力损失,可取出地层原始压力的含油、含水饱和度岩心。 This article describes a high-pressure closed coring tools and techniques. After drilling the core, lifting the drill, has cut the heart, open the valve or close the lower part of the core tube ball valve so that the inner tube completely closed. The upper part of the tool is equipped with a pressure regulating device, which can automatically replenish the pressure loss of the inner cylinder during the drilling. The crude oil-containing and water-saturated core with the original formation pressure can be taken out.