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公开(公告)号：US5137087A
公开(公告)日：1992-08-11
申请号：US741859
申请日：1991-08-07
CPC分类号： E21B17/04 , E21B17/06 , E21B33/146 , E21B34/12 , E21B34/14
摘要： A casing cementer with torque-limiting rotating positioning tool. The casing cementer comprises a housing with a rotating valve sleeve therein. A positioning tool is used to rotated the valve sleeve between open and closed positions thereof. No reciprication of the positioning tool is required. The valve sleeve has a sealing ring molded thereto for sealing between the housing and the valve sleeve. The valve sleeve preferably has an inside diameter at least as large as an inside diameter of the casing. A stop is provided to limit movement of the valve sleeve when it reaches either the open or closed position. A clutch in the positioning tool provides for torque-limitation and a ratcheting indication to the operator at the surface when the valve sleeve has been opened or closed.
摘要翻译： 具有扭矩限制旋转定位工具的套管胶结剂。 套管胶结剂包括其中具有旋转阀套筒的壳体。 使用定位工具将阀套在其打开和关闭位置之间旋转。 不需要定位工具的加工。 阀套具有模制在其上的密封环，用于在壳体和阀套之间进行密封。 阀套优选地具有至少与壳体的内径一样大的内径。 提供止动件以限制阀套到达打开或关闭位置时的移动。 当阀套已经打开或关闭时，定位工具中的离合器提供扭矩限制和操作者在表面的棘轮指示。
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公开(公告)号：US5109925A
公开(公告)日：1992-05-05
申请号：US642491
申请日：1991-01-17
IPC分类号： E21B33/127 , E21B33/14 , E21B33/16
CPC分类号： E21B33/16 , E21B33/127 , E21B33/146
摘要： A multiple stage inflation packer with secondary opening rupture disc. The inflatable packer comprises a case with a closing sleeve, an opening sleeve and a releasing sleeve therein. An opening plug is dropped into the casing string and is allowed to free fall, or is pumped down, to actuate the opening sleeve to allow inflation of the packer element. A back check valve prevents the packer from deflating. After the packer is inflated, additional pressure is applied which ruptures a rupture disc to open a port to the well annulus above the set packer element. Cementing may be carried out through this port, and after the cementing operation, a closing plug is pumped down the well casing behind the cement to actuate the releasing sleeve and move the closing sleeve to seal off the ports. Another check valve insures that pressure is equalized on both sides of the rupture disc as the packer is run into the well bore. After cementing is complete, the center of the packer may be drilled out, leaving the closing sleeve to permanently seal the ports.
摘要翻译： 具有次级开口破裂盘的多级膨胀包装机。 充气封隔器包括具有闭合套筒的壳体，开口套筒和其中的释放套筒。 打开塞子落入套管柱中并被允许自由下落或被抽下来致动开启套筒以允许封隔器元件的膨胀。 后止回阀防止包装机放气。 在封隔器膨胀之后，施加额外的压力，其破裂破裂盘以将端口打开到设置的封隔器元件上方的井环。 可以通过该端口进行水泥化，并且在固井操作之后，将密封塞从水泥井下方的井套管中泵送以致动释放套筒并移动关闭套筒以密封端口。 另一个止回阀确保当隔离器进入井眼时，破裂盘两侧的压力相等。 固井完成后，可以钻出封隔器的中心，使密封套永久密封。
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公开(公告)号：US4771801A
公开(公告)日：1988-09-20
申请号：US10235
申请日：1987-02-02
申请人： Joseph B. Crump , William K. Maddox
发明人： Joseph B. Crump , William K. Maddox
CPC分类号： F04B49/121 , Y10T137/1737
摘要： A protective cover assembly for a fluid end of a plunger-type pump or other positive displacement pump. The protective cover assembly includes a cover adapted to fit in an open end of the fluid end of the pump. The cover comprises a convex or domed center portion adapted for buckling away from a plunger of the pump when pressure in the pump exceeds a predetermined level and further comprises an outer portion. A cover retainer is engageable with the open end of the fluid end of the pump and is adapted for clamping the outer portion of the cover to the fluid end. A seal is provided between the outer portion of the cover and the fluid end. The convex center portion of the cover has a convex surface generally facing the plunger, and the convex surface is preferably hemispherical. In one embodiment, the convex center portion has a substantially constant cross-sectional thickness, and in an alternate embodiment, the convex center portion has an enlarged section adapted for affecting a pressure level required for buckling the convex portion. A method of preventing overpressure in a fluid end of a plunger-type pump using the protective cover assembly is also disclosed.
摘要翻译： 一种用于柱塞式泵或其他容积式泵的流体端的保护盖组件。 保护盖组件包括适于装配在泵的流体端的开口端的盖。 所述盖包括凸起或圆顶中心部分，当所述泵中的压力超过预定水平并且还包括外部部分时，所述凸起或圆顶中心部分适于从所述泵的柱塞屈曲。 盖保持器可与泵的流体端的开口端接合，并适于将盖的外部部分夹紧到流体端。 在盖的外部部分和流体端之间设置密封件。 盖的凸起中心部分具有大致面对柱塞的凸形表面，并且凸形表面优选地是半球形的。 在一个实施例中，凸起的中心部分具有基本上恒定的横截面厚度，并且在替代实施例中，凸起中心部分具有适于影响使凸起部分弯曲所需的压力水平的扩大部分。 还公开了一种使用保护盖组件防止柱塞式泵的流体端中的超压的方法。
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公开(公告)号：US5133644A
公开(公告)日：1992-07-28
申请号：US642482
申请日：1991-01-17
CPC分类号： F04B49/106 , F04B49/065 , F04B2205/09 , F04B2207/0411 , F04B2207/0412 , F04B2207/0413 , F04B2207/0421 , F04B2207/0422 , F04B2207/0423
摘要： A variable displacement pump is controlled throughout a broad range of operating conditions between a maximum pressure, low flow rate combination and a minimum pressure, high flow rate combination even when the pump is driven by a power limited prime mover. Different relief valves set at different operating pressures are automatically selectably connected to a control port of the pump in response to the actual flow rate of the fluid pumped by the pump reaching different flow rate set points.
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