公开(公告)号：US4872510A

公开(公告)日：1989-10-10

申请号：US252043

申请日：1988-09-30

申请人： Douglas J. Lehr ,  Merle L. Bell ,  Richard P. Rubbo ,  Richard L. Forehand

发明人： Douglas J. Lehr ,  Merle L. Bell ,  Richard P. Rubbo ,  Richard L. Forehand

IPC分类号： E21B21/10

CPC分类号： E21B21/10 ,  Y10T137/7855 ,  Y10T137/7856

摘要： A subterranean well casing float tool is comprised of a tubular metal housing which is securable to a well casing conduit. Varing means are implaced within the housing, with substantially all of the components of the valving means, save a biasing means, are thermosetting. The valving means has a thermosetting frame and valve head and valve seat means relative to the frame. A biasing member, such as a compressed spring is used for urging the valve head toward the valve seat to a closed position. A compartment including the valve head is provided for enclosure around the biasing means when the valve head is moved fully away from the valve seat to protect the spring from errosive turbulent fluid flow when the valve head is in the open position relative to the seat. The valving means is directly secured to the housing by means of thread members having profiled shear surfaces such that the shear area of the valving means is substantially greater than that of the metal housing.

摘要翻译： 地下井套管浮动工具包括可固定到井套管道的管状金属外壳。 平衡装置嵌入壳体内，阀装置的基本上所有部件节省偏压装置都是热固性的。 阀装置具有相对于框架的热固性框架和阀头以及阀座装置。 使用诸如压缩弹簧的偏置构件将阀头朝向阀座推压至关闭位置。 当阀头相对于座椅处于打开位置时，当阀头完全远离阀座移动时，包括阀头的隔间被提供用于围绕偏置装置围绕，用于保护弹簧免受腐蚀性湍流流体的流动。 阀装置通过具有成型剪切表面的螺纹构件直接固定到壳体，使得阀装置的剪切面积显着大于金属壳体的剪切面积。

公开(公告)号：US5156220A

公开(公告)日：1992-10-20

申请号：US573581

申请日：1990-08-27

申请人： Richard L. Forehand ,  Douglas J. Murray ,  Mark E. Hopmann ,  Ronald D. Williams

发明人： Richard L. Forehand ,  Douglas J. Murray ,  Mark E. Hopmann ,  Ronald D. Williams

IPC分类号： E21B33/00 ,  E21B33/12 ,  E21B34/00 ,  E21B34/14

CPC分类号： E21B33/1208 ,  E21B34/14 ,  E21B2033/005 ,  E21B2034/007

摘要： A downhole well tool is provided which includes a shifting sleeve for opening a flow communication port. The well tool includes first and second primary seal elements positioned upstream and downstream, respectively, of the port as well as upstream and downstream of the threaded connections between the well tool and sections of tubing forming the well flow conduit. A fluid diffuser element may be included to abate flow damage across the primary seal elements during the shifting of the sleeve. A method of selectively transmitting fluid incorporating said well tool also is disclosed.

摘要翻译： 提供一种井下井工具，其包括用于打开流动连通端口的换档套筒。 井工具包括位于端口的上游和下游的第一和第二主要密封元件以及井的工具和形成井流管道的管道部分之间的螺纹连接的上游和下游。 可以包括流体扩散器元件以在套筒移动期间消除穿过主密封元件的流动损伤。 公开了一种选择性地传输包含所述井具的流体的方法。

公开(公告)号：US4953622A

公开(公告)日：1990-09-04

申请号：US392906

申请日：1989-08-14

申请人： Douglas J. Lehr ,  Merle L. Bell ,  Richard P. Rubbo ,  Richard L. Forehand

发明人： Douglas J. Lehr ,  Merle L. Bell ,  Richard P. Rubbo ,  Richard L. Forehand

IPC分类号： E21B21/10

CPC分类号： E21B21/10 ,  Y10T137/7855 ,  Y10T137/7856

摘要： A subterranean well casing float tool has a tubular metal housing which is securable to well casing conduit. A valve is carried within the housing and comprises a frame with a valve head and seat carried relative to the frame and biased toward closed position. A compartment includes the valve head for enclosure around a bias, such as a spring, when the valve head is moved away from the valve seat. The valving components are directly secured to the housing by threads having profiled shear surfaces such that the shear area of the valving members is substantially greater than that of the housing.

摘要翻译： 地下井套管浮动工具具有可固定到井套管道的管状金属外壳。 阀门被承载在壳体内并且包括具有阀头和相对于框架承载的阀座并被偏压到关闭位置的框架。 当阀头离开阀座时，隔室包括用于围绕偏压（例如弹簧）围绕的阀头。 阀构件通过具有成型剪切表面的螺纹直接固定到壳体，使得阀构件的剪切面积显着大于壳体的剪切面积。