本文介绍了一种井下封隔器。该封隔器用于井筒密封,以测试井筒完整性。封隔器的坐封是通过封隔器钢体上外套的移动对一个或多个密封元件产生挤压作用来实现的。这种封隔器带有一个旁流通道,这样封隔器下井时流体可以从封隔器流过。封隔器附有的刮管器或刷子,起到清除井筒脏物和清理坐封部位的作用。 This article describes a downhole packer. The packer is used for wellbore sealing to test wellbore integrity. The packer setting is achieved by the extrusion of one or more sealing elements by the movement of the jacket on the packer steel body. This packer has a bypass flow path so that fluid can flow from the packer as the packer goes down. Packers attached to the razor or brush, play to clear the dirt and clean-up site set seat role.