公开(公告)号：US20040194964A1

公开(公告)日：2004-10-07

申请号：US10405382

申请日：2003-04-02

发明人： James B. Tieben

IPC分类号： E21B033/068

CPC分类号： F04B47/02 ,  E21B43/127

摘要： A downhole pump includes a pump barrel defining a pumping chamber having a first end and a second end, a first one-way valve positioned at the first end of the pumping chamber, a second one-way valve positioned at the second end of the pumping chamber and a plunger movable disposed in the pumping chamber. The first one-way valve is operable to permit a flow of fluid out of the first end of the pumping chamber, while the second one-way valve is operable to permit a flow of fluid out of the second end of the pumping chamber. The plunger has first and second ends facing the first and second ends of said pumping chamber respectively. The pumping chamber has an inlet adapted to be in flow communication with a production zone. The plunger is movable in the pumping chamber between at least a first position and a second position. The second end of the plunger is positioned on a first side of the inlet when the plunger is in the first position such that the inlet is in flow communication with the second end of the pumping chamber. The first end of the plunger is positioned on a second side of the inlet when the plunger is in the second position such that the inlet is in flow communication with the first end of the pumping chamber. An inlet member and a method of pumping fluid from a production zone located beneath the surface of the earth are also provided.

摘要翻译： 井下泵包括限定具有第一端和第二端的泵送室的泵筒，位于泵送室的第一端的第一单向阀，位于泵送第二端的第二单向阀 室和可移动地设置在泵送室中的柱塞。 第一单向阀可操作以允许流体从泵送室的第一端流出，而第二单向阀可操作以允许流体从泵送室的第二端流出。 柱塞具有分别面对所述泵送室的第一和第二端的第一和第二端。 泵送室具有适于与生产区域流动连通的入口。 柱塞可以在泵送室中在至少第一位置和第二位置之间移动。 当柱塞处于第一位置时，柱塞的第二端定位在入口的第一侧上，使得入口与泵送室的第二端流动连通。 当柱塞处于第二位置时，柱塞的第一端定位在入口的第二侧上，使得入口与泵送室的第一端流动连通。 还提供了一种入口构件和从位于地球表面下方的生产区泵送流体的方法。

公开(公告)号：US20030037920A1

公开(公告)日：2003-02-27

申请号：US10210930

申请日：2002-08-02

发明人： Jeff L. Giacomino

IPC分类号： E21B033/068

CPC分类号： E21B43/121 ,  F04B47/12

摘要： A pad plunger assembly, for use in gas well tubing, includes an elongated mandrel having opposite ends and a longitudinal axis extending between the opposite ends, a pair of opposite end members each attached to one of the opposite ends of the mandrel, and a seal-forming pad subassembly disposed about the mandrel and between the opposite end members thereon. The pad subassembly has an outer exterior surface of an annular concave configuration formed by opposite end portions of the outer exterior surface being disposed farther radially outwardly from the longitudinal axis of the mandrel than an intermediate portion of the outer exterior surface is disposed radially outwardly from the longitudinal axis of the mandrel such that a frictional seal which generates reduced friction is provided on the interior wall surface of the gas well tubing.

摘要翻译： 用于气井管的衬垫柱塞组件包括细长心轴，其具有相对的端部和在相对端部之间延伸的纵向轴线，一对相对的端部构件，每个端部构件连接到心轴的相对端中的一个，以及密封件 形成的垫子组件围绕心轴布置在其上的相对的端部构件之间。 衬垫子组件具有由外部外表面的相对端部形成的环形凹形构造的外部外表面，其比心轴的纵向轴线更远离径向向外设置，而外部外表面的中间部分从外部表面径向向外设置 心轴的纵向轴线使得在气井管的内壁表面上提供产生减小的摩擦的摩擦密封。

公开(公告)号：US20030155114A1

公开(公告)日：2003-08-21

申请号：US10208568

申请日：2002-07-30

申请人： Weatherford/Lamb, Inc.

发明人： Gerald D. Pedersen ,  David E. Hirth

IPC分类号： E21B033/068

CPC分类号： E21B33/05 ,  E21B33/068 ,  E21B33/16 ,  E21B34/14

摘要： A ball dropping assembly for dropping a plurality of objects, such as spherical balls, into a wellbore. The assembly first comprises a seat for retaining a ball before it is released. The assembly also comprises a ball-feeding channel for feeding additional balls onto the seat. A ball-retaining lever is provided to selectively receive and retain balls onto the seat, and then to release the balls individually into the wellbore. In one embodiment, the assembly is attached to a side bore in fluid communication with a main bore in a cementing head. The ball-retaining lever rotates into the bore when releasing a ball. When a plug is released into the bore from a cementing head, the plug will trip the lever, causing the ball-retaining lever to rotate back towards the ball-retained position. Thus, the ball dropping assembly also serves as a plug release indicator.

摘要翻译： 一种用于将诸如球形球的多个物体落入井筒中的球落组件。 组件首先包括用于在释放球之前保持球的座。 组件还包括用于将额外的球馈送到座椅上的滚珠进给通道。 提供球保持杆以选择性地将球保持在座上，然后将球单独地释放到井筒中。 在一个实施例中，组件附接到与固井头中的主孔流体连通的侧孔。 释放球时，球保持杆旋转到孔中。 当塞子从固井头释放到钻孔中时，塞子将使杠杆脱扣，导致球保持杆向球回转位置旋转。 因此，降落组件也用作插头释放指示器。

公开(公告)号：US20030047316A1

公开(公告)日：2003-03-13

申请号：US09948647

申请日：2001-09-10

发明人： Gordon F. Bosley

IPC分类号： E21B033/068 ,  E21B043/00

CPC分类号： E21B43/122 ,  E21B43/123

摘要： A system is provided for unloading accumulated liquids and enhancing the recovery of gas from a reservoir having diminished pressure. An annulus between a tubing string and casing is isolated by a packer and continually pressurized with a slipstream of compressed gas while the well continues to produce. A unique valve positioned in the tubing string is shuttled between a production position in which production fluids are permitted to bypass the valve to the surface and a lift position in which the bypass is blocked and an unloading port is opened to vent high pressure annulus gas to the tubing string above the valve, lifting accumulated liquids with it. Preferably, the valve is actuated to the lift position by the impact of a plunger dropped from a lubricator at the wellhead, when the pressure in the annulus has reached a predetermined threshold. When the gas has been vented and the pressure in the annulus drops, the valve is actuated to the uphole production position as a result of the higher reservoir pressure.

摘要翻译： 提供一种用于卸载积聚的液体并增强从具有减小的压力的储存器中回收气体的系统。 油管柱和套管之间的环形空气通过封隔器分离，并在井继续产生时用压缩气体的滑流连续加压。 定位在油管柱中的独特的阀在允许生产流体旁通阀门到达表面的生产位置和旁路被阻塞的提升位置和卸载口被打开以将高压环空气排放到 阀门上方的油管柱，用它提起积聚的液体。 优选地，当环空中的压力达到预定阈值时，阀被从井口处的润滑器落下的柱塞的撞击而致动到提升位置。 当气体被排放并且环空中的压力下降时，由于较高的储层压力，阀被致动到井上生产位置。

公开(公告)号：US20030010498A1

公开(公告)日：2003-01-16

申请号：US10192032

申请日：2002-07-10

发明人： Randy C. Tolman ,  Curtis Kofoed

IPC分类号： E21B033/068 ,  E21B043/25

CPC分类号： E21B43/26 ,  E21B33/068

摘要： A device and method for delivering fracture fluid (e.g., erosive materials) into an oilfield wellbore while the well has wireline, coiled tubing, jointed tubing or any other apparatus encumbering the flow path of the erosive fluid that is being injected into the device. The device provides the ability to insert and remove equipment in the wellbore during fluid treatment while maintaining access to the full wellbore diameter. The invention also provides a method for delivery and positive, down-hole displacement of material (i.e., diverting material including, but not limited to buoyant ball sealers).

公开(公告)号：US20020095984A1

公开(公告)日：2002-07-25

申请号：US09764375

申请日：2001-01-19

发明人： Larry Keith Johnson

IPC分类号： E21B033/068

CPC分类号： E21B49/00 ,  G01N15/0826

摘要： A constant-head soil permeameter for determining hydraulic conductivity of earthen materials is inserted into a borehole at the desired test depth. A calibrated reservoir, disposed on the ground surface, is attached thereto with a suitable length of hose. Water is added to the calibrated reservoir and allowed to flow freely into the borehole until an equilibrium level is reached in the borehole and inside the soil permeameter. The water flowing to the permeameter is throttled by buoyant float pressure that is greatly increased by a lever-and-link valve control assembly which provides considerable mechanical advantage, thereby allowing better constant head control and much greater depths of testing than previously attained by known permeameters. A filtered vent system, backflow check valve, and seals restrict entry of soil particles and debris, thereby minimizing cleaning and maintenance of the invention. The soil permeability is determined by solving appropriate mathematical equations which utilize the equilibrium height of water, rate of water flow, and dimensions of the borehole as input parameters.

摘要翻译： 用于确定土壤材料的水力传导率的恒定头土壤渗透仪在期望的测试深度处插入钻孔中。 设置在地面上的经校准的储存器用适当长度的软管连接到其上。 将水添加到校准的储存器中并允许自由流入钻孔中，直到在井眼和土壤渗透液中达到平衡水平。 流动到渗透仪的水被浮力浮动压力节流，该压力由杠杆和连杆阀控制组件极大地提高，该控制组件提供了相当大的机械优势，从而允许更好的头部控制和比以前通过已知的渗透率获得的更大的测试深度 。 过滤排气系统，回流止回阀和密封件限制土壤颗粒和碎屑的进入，从而最小化本发明的清洁和维护。 通过求解利用水的平衡高度，水流速度和钻孔尺寸作为输入参数的适当数学方程来确定土壤渗透率。