公开(公告)号：US06182752B2

公开(公告)日：2001-02-06

申请号：US09115360

申请日：1998-07-14

申请人： Sidney K. Smith, Jr. ,  William B. Preece

发明人： Sidney K. Smith, Jr. ,  William B. Preece

IPC分类号： E21B2300

CPC分类号： E21B33/05 ,  Y10T137/4891

摘要： A plug-dropping head capable of dropping balls or plugs or other objects is disclosed. The plug-dropping head has a compact design with a cylinder having multiple chambers for storage of plugs and/or balls. The device can be actuated manually or automatically, locally or remotely, to rotate the cylinder to present a different bore in alignment with a flowpath through the housing. An exterior signal indicates that the object has fallen through the device. An indexing feature assures alignment of the individual bores in the cylinder which contain a plug or wiper with the main passage through the tool. Flow can be maintained through the tool as the cylinder is rotated. Rotation of the cylinder allows an obstruction device in the flowpath to move out of the way to allow the ball or plug to drop when sufficient alignment is reached.

摘要翻译： 公开了一种能够滴下球或塞子或其他物体的插头头。 插头头具有紧凑的设计，其具有用于存储插头和/或球的具有多个腔室的圆筒。 该装置可以手动或自动地，局部地或远程地致动，以使气缸旋转以呈现与穿过壳体的流路对准的不同孔。 外部信号表示物体已经通过设备掉落。 分度特征确保包含塞子或刮水器的圆柱体中的各个孔与主通道通过工具的对准。 当气缸旋转时，可以通过工具保持流量。 气缸的旋转允许流动路径中的阻塞装置移动离开路径，以在达到足够的对准时允许球或塞子下降。