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    • 3. 发明授权
    • Hydraulically energized wireline blowout preventer
    • 液压电线防喷器
    • US5287879A
    • 1994-02-22
    • US46980
    • 1993-04-13
    • Henry H. LeggettLionel M. GingrasRussell C. Gilleylen
    • Henry H. LeggettLionel M. GingrasRussell C. Gilleylen
    • E21B33/06
    • E21B33/062Y10T137/4442
    • A single ram wireline BOP mechanism is disclosed which incorporates opposed rams having elastomeric packing capsules and outer elastomeric seals for accomplishing sealing about a wireline extending through the BOP body. The packing capsules cooperate to define a centrally oriented grease chamber into which is injected grease from an externally accessible grease fitting so as to establish grease sealing about the wireline. Grease pressure from the grease chamber is ducted through the BOP rams and into inner cylinders where it acts upon the pressure responsive area of a free piston contained therein. The grease pressure develops a force on the free piston which acts against the ram to enhance the closing force of the ram. The free piston has a pressure responsive area significantly greater than the pressure responsive area of the packing capsule portion of the ram so that grease pressure acting upon both of these components develops a significant resultant force that enhances the closing force and thus sealing capability of the rams. The rams are also operated in the closing and opening directions by hydraulic fluid which is introduced through fittings into an outer hydraulic cylinder. The BOP mechanism is also provided with a non-rising stem type lock out device which drives a lock nut for securing the ram energizing piston in its closed position when desired. The apparatus also incorporates a position indicator stem which is coupled with the ram energizing piston so that the position of the piston and rams may be visually inspected.
    • 公开了一种单个压头电缆BOP机构,其包括具有弹性体填充胶囊的相对的柱塞和用于完成围绕延伸穿过BOP主体的电缆线的外部弹性体密封件。 包装胶囊协作以确定中心定向的油脂室,从外部可接触的油脂配件注入油脂,从而在钢丝绳周围建立润滑脂密封。 来自油脂室的油脂压力通过BOP柱塞引导到内筒中,在其内作用于其中包含的自由活塞的压力响应区域。 润滑脂压力在自由活塞上产生作用力作用在压头上的力,以增强压头的闭合力。 自由活塞的压力响应面积显着大于压头的包装胶囊部分的压力响应面积,使得作用在这两个部件上的油脂压力产生显着的合力,从而增强了压头的闭合力和密封能力 。 公柱还通过液压流体在关闭和打开方向上操作,该液压流体通过配件引入外部液压缸。 BOP机构还设置有非升高的杆式锁定装置,其在需要时驱动用于将冲头激活活塞固定在其关闭位置的锁定螺母。 该装置还包括位置指示器杆,该位置指示杆与活塞活塞活塞联接,使得可以目视检查活塞和柱塞的位置。
    • 5. 发明授权
    • Pressurized sheave mechanism for high pressure wireline service
    • 用于高压有线服务的加压滑轮机构
    • US5662312A
    • 1997-09-02
    • US686177
    • 1996-07-22
    • Henry H. LeggettRussell C. Gilleylen
    • Henry H. LeggettRussell C. Gilleylen
    • E21B19/22E21B33/072E21B19/08
    • E21B19/22E21B33/072
    • A pressure containing wireline sheave mechanism having a sheave body defining an opening within which is received a sheave housing which cooperates with the sheave body to define a circular internal sheave chamber which is exposed to operating pressure such as well pressure during well servicing activities. A split sheave having an external wireline groove is located within the internal chamber and is rotatably supported at its inner periphery by bearings. During operation of the wireline sheave mechanism lubricant is supplied to the inner periphery of the internal sheave chamber at a location adjacent the bearing and at a lubricant pressure exceeding well pressure to prevent well pressure induced migration of contaminants from the wireline groove of the sheave to its bearings. Seals on each side of the internal sheave chamber establish sealing between the sheave body and sheave housing and cause well pressure induced force acting on the sheave housing to be substantially confined to hoop stress so that the sheave mechanism is protected against significant pressure induced internal side loading. This permits the sheave mechanism to be of relatively small dimension and of relatively lightweight construction without and sacrifice from the standpoint of pressure containing capability.
    • 一种包含电缆绳轮机构的压力,其具有限定开口的滑轮主体,所述滑轮主体在所述开口内容纳有滑轮壳体,所述滑轮壳体与所述滑轮主体配合以限定在井服务活动期间暴露于诸如井压力的操作压力的圆形内部滑轮室。 具有外部电缆槽的裂缝槽位于内部室内,并通过轴承可旋转地支撑在其内周。 在钢丝绳滑轮机构的运行期间,润滑剂在与轴承相邻的位置处以及超过良好压力的润滑剂压力下被供应到内侧滑轮室的内周边,以防止压力引起污染物从滑轮的钢丝绳槽向其移动 轴承。 在内侧滑轮室的每一侧上的密封件在滑轮体和滑轮壳体之间建立密封,并且导致作用在滑轮壳体上的良好的压力引起的力基本上被限制到环向应力,使得滑轮机构被保护以免受显着的压力引起的内侧负载 。 这允许滑轮机构具有相对较小的尺寸和相对较轻的结构,而从压力容纳能力的观点来看并不牺牲。
    • 6. 发明授权
    • Shear/seal ram assembly for a ram-type blowout prevention system
    • 用于冲压式防喷系统的剪切/密封柱塞组件
    • US07243713B2
    • 2007-07-17
    • US10998378
    • 2004-11-29
    • C. Steven IsaacksHarry P. HiebelerNoe Tony CordovaJimmy LivingstonRussell C. Gilleylen
    • C. Steven IsaacksHarry P. HiebelerNoe Tony CordovaJimmy LivingstonRussell C. Gilleylen
    • E21B33/06E21B29/08
    • E21B33/063
    • An improved shear/seal ram assembly used in ram-type BOPs is disclosed. The disclosed invention is a unique shear/seal ram assembly in which rail seal actuators attached to or integrally formed in a planar surface of one shear blade mate with and slide within corresponding rail guide grooves formed in a planar surface of a second shear blade. As the shear blades move over each other, the rail seal actuators slide within the rail guide grooves, eventually coming into contact with a seal actuator plate of a unique blade-to-blade seal assembly placed within a shear blade seal groove. Continued movement of the shear blades over each other causes the rail seal actuators to compress, or “energize,” the blade-to-blade seal of the blade-to-blade seal assembly, thereby providing a pressure tight seal between the shear blade assemblies.
    • 公开了一种用于冲压式BOP的改进的剪切/密封压头组件。 所公开的发明是一种独特的剪切/密封柱塞组件,其中附接到或整体地形成在一个剪切刀片的平坦表面中的轨道密封件致动器与形成在第二剪切刀片的平坦表面中的相应导轨槽相配合并滑动。 当剪切刀片彼此移动时,轨道密封件致动器在轨道引导槽内滑动,最终与设置在剪切刀片密封槽内的独特的叶片到叶片密封组件的密封致动器板接触。 剪切刀片彼此继续移动导致轨​​道密封件致动器压缩或“激励”刀片到刀片密封组件的刀片到刀片的密封,从而在剪切刀片组件之间提供压力密封 。