公开(公告)号：US5653289A

公开(公告)日：1997-08-05

申请号：US557879

申请日：1995-11-14

申请人： Stanley Hosie ,  Iain M. Oswald ,  Trevor W. J. Park ,  Calum J. B. Dinnes

发明人： Stanley Hosie ,  Iain M. Oswald ,  Trevor W. J. Park ,  Calum J. B. Dinnes

IPC分类号： E21B33/038 ,  E21B33/04 ,  E21B33/043

CPC分类号： E21B33/04 ,  E21B33/038 ,  E21B33/043

摘要： A casing tensioning system applies tension to a string of casing between a subsea wellhead and a surface wellhead. The tensioning system has an outer hanger with a load ring and a ratchet ring that engage a mandrel. The mandrel is connected into the string of casing. The outer hanger has a disengaged position and an engaged position. When running, the outer hanger lands on a load shoulder in the surface wellhead while the casing hanger is in the disengaged position. The operator subsequently lowers the casing and latches the casing to the subsea wellhead. The operator then removes the casing running tool. The operator sets an annulus seal using a seal running tool. The annulus seal actuates a release member to cause the ratchet ring to move to the collapsed engaged position. After the seal is set the operator pulls tension on the casing.

摘要翻译： 套管张紧系统在海底井口和井口之间的一套套管上施加张力。 张紧系统具有带有负载环的外挂架和与心轴啮合的棘轮环。 心轴连接到套管中。 外挂架具有脱离位置和接合位置。 当运行时，外部衣架在套管悬挂器处于脱离位置时落在井表面的负载肩上。 操作者随后降低外壳并将外壳锁定到海底井口。 然后操作人员移除套管运行工具。 操作者使用密封运行工具设置环形密封。 环形密封件致动释放构件以使棘轮环移动到折叠的接合位置。 设置密封后，操作者拉紧外壳上的张力。

公开(公告)号：US5222560A

公开(公告)日：1993-06-29

申请号：US870021

申请日：1992-04-17

申请人： Norman Brammer ,  Stanley Hosie

发明人： Norman Brammer ,  Stanley Hosie

IPC分类号： E21B33/038

CPC分类号： E21B33/038

摘要： A subsea well assembly has ability to receive an internal tieback connector when providing full bore access. The subsea well assembly has an inner wellhead housing which has a counterbore at its upper end. A tieback profile is formed in the counterbore. A protective sleeve releasably secures the counterbore, covering the tieback profile. After drilling is completed and tieback installation begins, the protective sleeve is removed. An internal tieback sleeve carried by a tieback funnel engages the tieback profile in the counterbore to secure the tieback funnel to the inner wellhead housing.

摘要翻译： 当提供全孔通道时，海底井组件具有接纳内部连接连接器的能力。 海底井组件具有在其上端具有沉孔的内井口壳体。 在沉头孔中形成了一个折回剖面。 保护套可释放地固定沉孔，覆盖回拉型材。 钻孔完成后，开始拉链安装，拆下保护套。 由回拉漏斗携带的内部回扣套筒与沉头孔中的回拉型材相结合，以将接回漏斗固定到内部井口外壳。