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    • 1. 发明授权
    • Emergency dump apparatus for buoyancy air tanks on buoyant riser systems
    • 用于浮力提升管系统的浮力空气罐的紧急倾卸装置
    • US06296421B2
    • 2001-10-02
    • US09753348
    • 2001-01-02
    • Edmund A. Fisher
    • Edmund A. Fisher
    • E21B1701
    • E21B17/012
    • An apparatus for rapid venting of the compressed air and deballasting of a buoyant air tank in a positively buoyant riser system in the event of a premature drive off or a riser section parting is shown. The rapid venting of the compressed air ensures that the riser section cannot rapidly ascend to the surface and damage the drilling rig positioned above. In a first embodiment, the buoyancy tank or housing includes a circumferentially shaped channel positioned on its upper end. An annularly shaped ring is placed over the circumferentially shaped channel and sealed in place by a frangible weld. A tether line attaches to the annularly shaped ring and extends to an anchor point on the BOP stack below. In the event of a catastrophic parting of the riser, as the riser sections and attached buoyancy tank or housings begin ascending, the tether line is drawn tight. Further ascension of the buoyancy tank or housings, causes the frangible weld joints to break and peel back the annularly shaped ring, exposing the circumferentially shaped channel. This causes an immediate and complete venting of the buoyancy tank or housings, rendering them negatively buoyant. Alternate embodiments using an annularly shaped flange releasable by toggle clamps or retainer pins are also shown.
    • 示出了在过早驱动关闭或提升器部分分离的情况下,在积极浮力提升管系统中快速排空压缩空气和浮力空气罐的卸荷的装置。 压缩空气的快速排放确保提升管段不能迅速地上升到表面并损坏位于上方的钻机。 在第一实施例中,浮力箱或壳体包括位于其上端的周向形状的通道。 环形形状的环放置在周向形状的通道上,并通过易碎焊缝密封就位。 系绳连接到环形环上并延伸到下面的BOP堆叠上的锚定点。 在提升管的灾难性分离的情况下,随着提升管部分和附接的浮力罐或壳体开始上升,系绳被拉紧。 浮力槽或壳体的进一步升高使易碎的焊接接头破裂并剥离环形环,露出周向形状的通道。 这导致浮力箱或外壳立即完全排气,使它们负浮力。 还示出了使用通过肘节夹或保持销可释放的环形凸缘的替代实施例。
    • 2. 发明授权
    • Flotation riser
    • 浮选提升管
    • US4646840A
    • 1987-03-03
    • US729623
    • 1985-05-02
    • Roy E. BartholomewRonald G. PettusEmanuel SchnitzerEdmund A. Fisher
    • Roy E. BartholomewRonald G. PettusEmanuel SchnitzerEdmund A. Fisher
    • E02B17/00E21B17/01F16L1/24E21B7/12
    • E21B17/012F16L1/24
    • A flotation riser having a series of annular chambers with a riser string extending in free-standing relation through said chambers, means for supplying gas to the chambers to control buoyancy, means to supply gas to a plurality of the lowermost chambers to provide an emergency supply of deballasting gas, and means for remotely releasing said supply of gas into the chambers above to render the flotation riser free-standing to permit release from the floating platform during emergencies. A method of storing emergency deballasting gas and for emergency deballasting of the chambers to render the flotation riser freee-standing including the steps of supplying gas to the lowermost chambers, retaining the gas in said lowermost chambers, and remotely releasing the gas and conducting it to higher chamber to deballast such chambers sufficient so that said flotation riser is free-standing.
    • 一种具有一系列环形室的浮选提升器,其具有通过所述室自由延伸的提升管柱,用于向所述室供应气体以控制浮力的装置,用于向多个最下室供应气体以提供紧急供应 的废气,以及用于将所述气体供应远程释放到上述室中的装置,以使浮选提升管独立,以允许在紧急情况期间从浮动平台释放。 一种存储应急除气的方法,用于对室进行紧急卸压以使浮选提升管自由站立,包括将气体供应到最下室,将气体保持在最下室中,并远离释放气体并将其传导至 更高的室以使这样的室去除,使得所述浮选提升管是独立的。
    • 3. 发明授权
    • Subsea wellhead production apparatus with a retrievable subsea choke
    • 海底井口生产设备具有可回收的海底扼流圈
    • US4589493A
    • 1986-05-20
    • US596068
    • 1984-04-02
    • Thomas P. KellyEdmund A. Fisher
    • Thomas P. KellyEdmund A. Fisher
    • E21B33/038E21B34/04E21B43/013E21B43/01
    • E21B43/013E21B33/038E21B34/04Y10T137/9029
    • A subsea wellhead production apparatus including a retrievable subsea choke having a body having an inlet, an outlet extending therein from its lower surface and a collet connecting flange surrounding the lower end of said body, a passage in said body defining communication between said inlet and said outlet, a valve seat in said body surrounding communication between said inlet and said outlet, a valve member movably mounted in said body to coact with said valve seat to control flow through said communication passage an actuator for moving said valve member toward and away from said valve seat, a flowline body having first and second passages opening on a surface of the body with a collet connecting flange surrounding said surface. An orienting key on said choke body and a muleshoe on said flowline body to orient and align said first passage with said inlet and said second passage with said outlet, and a remotely actuated collet connector surrounding and supported on said flowline body and having collet locking elements in position to engage the collet connecting flange.
    • 一种海底井口制造装置,包括具有入口的主体的可回收的海底扼流器,从其下表面延伸的出口和围绕所述主体的下端的夹头连接凸缘,所述主体中的通道限定所述入口和所述 出口,所述主体中的阀座围绕所述入口和所述出口之间的连通;可移动地安装在所述主体中以与所述阀座共同作用的阀构件,以控制通过所述连通通道的流动,所述致动器用于使所述阀构件朝向和远离所述 阀座,流线体,其具有在主体的表面上开有围绕所述表面的夹头连接凸缘的第一和第二通道。 所述扼流体上的定向键和所述流线体上的小锤,用于使所述第一通道与所述入口和所述第二通道与所述出口对准和对齐,以及远程驱动的夹头连接器,其围绕并支撑在所述流线体上并具有夹头锁定元件 在夹头连接法兰的位置。
    • 6. 发明授权
    • Emergency dump apparatus for buoyancy air tanks on buoyant riser systems
    • US06193441B1
    • 2001-02-27
    • US09339630
    • 1999-06-24
    • Edmund A. Fisher
    • Edmund A. Fisher
    • E21B1701
    • E21B17/012
    • An apparatus for rapid venting of the compressed air and deballasting of a buoyant air tank in a positively buoyant riser system in the event of a premature drive off or a riser section parting is shown. The rapid venting of the compressed air ensures that the riser section cannot rapidly ascend to the surface and damage the drilling rig positioned above. In a first embodiment, the buoyancy tank or housing includes a vertical channel positioned on its exterior. A cover plate is placed over the vertical channel and sealed in place by a frangible weld. A tether line attaches to the cover plate and extends to an anchor point on the BOP stack below. In the event of a catastrophic parting of the riser, as the riser sections and attached buoyancy tank or housings begin ascending, the tether line is drawn tight. Further ascension of the buoyancy tank or housings, causes the frangible weld joints to break and peel back the cover plate, exposing the vertical channels. This causes an immediate and complete venting of the buoyancy tank or housings, rendering them negatively buoyant. Alternate embodiments are also shown.
    • 7. 发明授权
    • Tubing hanger landing and orienting tool
    • 管道衣架着陆和定向工具
    • US4386656A
    • 1983-06-07
    • US161432
    • 1980-06-20
    • Edmund A. FisherHenry W. Miller
    • Edmund A. FisherHenry W. Miller
    • E21B33/047E21B23/04
    • E21B33/047
    • A tubing hanger landing and orienting tool for a subsea wellhead having a mandrel connected to the tubing hanger, a sleeve surrounding a portion of the mandrel and being axially movable thereon, a liquid filled chamber between the sleeve and the mandrel, a shoulder on the sleeve adapted to seat in the wellhead, relative movement of the sleeve and the mandrel after seating of the sleeve in the wellhead causing a change of volume in the chamber, means controlling the volume in the chamber to cushion the landing of the tubing hanger, pressure responsive extendible lug in the mandrel which when extended coacts with a cam and slot surface within an orienting spool to orient the tubing hanger in the wellhead, and means for applying pressure from said chamber to extend said lug after seating of the sleeve in the wellhead.
    • 一种用于海底井口的管衣架着陆和定向工具,其具有连接到管道悬挂器的心轴,围绕心轴的一部分并且可轴向移动的套管,套筒和心轴之间的液体填充室,套筒上的肩部 适于坐在井口中,套筒和心轴在将套筒安置在井口中后相对运动,导致腔室中的体积变化,意味着控制腔室中的体积以缓冲管衣架的着陆,压力响应 在心轴中的可延伸的凸耳当延伸与定向线轴内的凸轮和槽表面共同作用以使管道悬挂器在井口中定向时,以及用于在将套管安置在井口中之后从所述腔室施加压力以延伸所述凸耳的装置。