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1. 发明授权

US5551510A Safety coupling for rotary down hole pump 失效
标题翻译：旋转井下泵的安全联轴器
公开(公告)号：US5551510A
公开(公告)日：1996-09-03
申请号：US399075
申请日：1995-03-08
申请人： Robert A. R. Mills
发明人： Robert A. R. Mills
IPC分类号： E21B43/12 , F04C15/00 , F16D43/16 , E21B43/00 , F16D9/10
CPC分类号： F04C15/0084 , E21B43/126 , F04C15/0057 , F16D43/16
摘要： A safety coupling for preventing backspin at excessive speeds of a torque transmitting drive powering a drive shaft which stores reactive torque due to torsional stress is disclosed. The safety coupling includes a rotatable driving member to be coupled with a torque producing power source, a rotatable driven member to be coupled with the drive shaft for axial rotation therewith, a support structure for coaxially and rotatably supporting the driving and driven members in relation to each other, a radial abutment provided on the driving member, and a centrifugal force responsive pawl pivotally mounted to the driven member for releasable engagement with the abutment. The pawl is pivoted from a locking position wherein it engages the radial abutment upon mutual rotation of the driving and driven members to provide a positive driving connection therebetween, to a disengaged position wherein the driving and driven members are freely rotatable relative to each other by the centrifugal force acting thereon when the driven member is coupled to a drive shaft backspinning at a speed in excess of a selected speed. The coupling substantially prevents damage to the torque transmitting drive upon excessive back-spin of the drive shaft and reduces the risk of injury to personnel working in the vicinity of a drive shaft subject to elastic torsion.
摘要翻译：公开了一种用于在以扭转传递驱动的过速速度下防止反向旋转的安全联接器，其驱动由于扭转应力而存储反作用转矩的驱动轴。安全联接器包括与转矩产生电源耦合的可旋转驱动构件，与驱动轴联接以便与其轴向旋转的可旋转从动构件，用于同时地和可旋转地支撑驱动和被驱动构件相对于彼此设置在驱动构件上的径向邻接件，以及可枢转地安装到从动构件的离心力响应爪，用于与基台可释放地接合。棘爪从锁定位置枢转，其中当驱动和被驱动构件相互旋转时，其与径向邻接部接合以在其间提供正向的驱动连接到脱离位置，其中驱动和被驱动构件可相对于彼此自由旋转当从动构件联接到以超过所选择的速度的速度回转的驱动轴时，作用在其上的离心力。该联接器基本上防止在驱动轴的过度反向旋转时对扭矩传递驱动器的损坏，并且降低了在受到弹性扭转的驱动轴附近工作的人员受伤的风险。

2. 发明授权

US5327961A Drive head for downhole rotary pump 失效
标题翻译：井下旋转泵驱动头
公开(公告)号：US5327961A
公开(公告)日：1994-07-12
申请号：US950959
申请日：1992-09-25
申请人： Robert A. R. Mills
发明人： Robert A. R. Mills
IPC分类号： E21B33/08 , E21B43/12 , F04B47/02 , F04B53/14 , F04B47/04
CPC分类号： F04B47/02 , E21B33/085 , E21B43/126 , F04B53/146
摘要： A drive head for a downhole rotary pump operated by a drive string rotatable in a production string includes a hollow rotatable drive shaft having an axial bore for a polished rod, a housing attachable to a wellhead assembly, radial bearings centering the drive shaft in the housing and one axial thrust bearing to support the weight of the drive shaft and the drive string suspended therefrom. A pulley mounted on the shaft for the driving of the drive shaft, which includes a chuck arrangement for the concentrical clamping of the polished rod in the drive shaft. The drive head is used in combination with a polished rod clamp which is affixed to the polished rod for the suspending of the weight of the drive string and rests on top of the chuck arrangement. This construction substantially prevents polished rod wobble and the associated stuffing box leakage as well as accidental downward slippage of the drive string which could lead to serious damage of the downhole pump.
摘要翻译：用于由可在生产线中旋转的驱动串操作的井下旋转泵的驱动头包括具有用于抛光杆的轴向孔的中空可旋转驱动轴，可连接到井口组件的壳体，将驱动轴定位在壳体中的径向轴承以及一个轴向推力轴承，以支撑驱动轴的重量和悬挂在其上的驱动系。一种安装在轴上用于驱动驱动轴的滑轮，其包括用于将抛光杆同心地夹紧在驱动轴中的卡盘装置。驱动头与抛光的杆夹一起使用，抛光杆夹固定在抛光棒上，用于悬挂驱动弦的重量并搁置在卡盘装置的顶部。这种结构基本上防止抛光棒摆动和相关的填料函泄漏以及驱动串的意外向下滑动，这可能导致井下泵的严重损坏。

3. 发明授权

US5358036A Safety disc brake assembly 失效
标题翻译：安全盘式制动器总成
公开(公告)号：US5358036A
公开(公告)日：1994-10-25
申请号：US92228
申请日：1993-07-15
申请人： Robert A. R. Mills
发明人： Robert A. R. Mills
IPC分类号： B60T13/20 , E21B43/12 , F04B49/10 , F16D55/226 , F16D59/00 , F16D65/14
CPC分类号： B60T13/20 , E21B43/121 , F04B49/103 , F16D55/226 , F16D59/00 , F16D2125/023 , F16D2127/08
摘要： A relatively simple hydraulically operated disc brake mechanism for drive systems which store reactive torque by reason of being under torsion is disclosed. Certain drive systems such as the drive strings for deep well submersible pumps store considerable reactive torque due to torsional stresses. Such torque must be controllably released if drive power is interrupted. The disc brake mechanism includes a housing that defines a reservoir for lubricating oil for the bearings of a shaft that drives a bi-directional hydraulic pump. When the shaft turns in an operating direction, the pump pumps the lubricating oil in a closed circuit through a filter and back to the reservoir. If normal operation is interrupted and the reactive torque in the system is released, the bi-directional pump forces oil through a control manifold to a disc brake caliper which brakes a disc rotor attached to the shaft. The faster the shaft turns as it releases reactive torque, the more braking force applied. As reactive torque is released, pump speed drops and brake force is correspondingly reduced until all reactive torque is released from the drive string permitting safe handling and soft restart of the drive string. The advantage is much improved safety and a self-regulating brake mechanism that handles power interruptions without manual intervention.
摘要翻译：公开了一种用于由于扭转而存储无功扭矩的驱动系统的相对简单的液压操作盘式制动机构。某些驱动系统，例如用于深井潜水泵的驱动系统由于扭转应力而存储相当大的无功扭矩。如果驱动电源中断，则必须可控制地释放这种扭矩。盘式制动机构包括壳体，其限定用于驱动双向液压泵的轴的轴承的润滑油的储存器。当轴沿操作方向转动时，泵通过过滤器将润滑油泵送到闭合回路中并返回储存器。如果正常操作被中断并且系统中的反作用转矩被释放，则双向泵将油通过控制歧管迫使一个盘式制动钳，该制动钳制动连接在轴上的盘式转子。随着释放反作用转矩，轴转动越快，施加的制动力越大。随着无功扭矩的释放，泵速下降，制动力相应减小，直到所有的反作用扭矩从驱动系统释放出来，允许驱动串的安全操作和软启动。优点是安全性和自动调节制动机制大大提高，无需人工干预即可处理电源中断。

4. 发明授权

US06354824B1 Ceramic hardfacing for progressing cavity pump rotors 有权
标题翻译：用于进行腔泵转子的陶瓷表面硬化
公开(公告)号：US06354824B1
公开(公告)日：2002-03-12
申请号：US09522146
申请日：2000-03-09
申请人： Robert A. R. Mills
发明人： Robert A. R. Mills
IPC分类号： F03C200
CPC分类号： F04C2/084 , F04C2/1071 , Y10T428/31678
摘要： A hardfacing for downhole progressing cavity pumps is disclosed as well as a method for producing same. The hardfacing consists of a ceramic layer applied to a ferrous pump rotor body by way of plasma spraying and a top layer of metallic material having a lower hardness than the ceramic. The ceramic layer has a grainy surface with a plurality of peaks and intermediate depressions, the peaks being formed by ceramic grains at the surface of the ceramic layer. The thickness of the top layer is adjusted such that the depressions between the peaks of the ceramic layer are completely filled thereby providing the rotor with a ceramic hardfacing of significantly reduced surface roughness. In the process of the invention, the pump rotor, which may be provided with a molybdenum bonding layer, is plasma coated with the ceramic and the resulting ceramic layer is covered with the metallic material top layer. The top layer is polished either until the dimensions thereof are within the tolerances acceptable for the finished rotor or until a majority of the peaks of the ceramic layer are exposed.
摘要翻译：公开了一种用于井下前进腔泵的硬化面及其制造方法。耐磨性由通过等离子体喷涂施加到铁水泵转子体上的陶瓷层和具有比陶瓷更低的硬度的顶层金属材料组成。陶瓷层具有多个峰和中间凹陷的颗粒状表面，该峰由陶瓷层表面的陶瓷晶粒形成。调节顶层的厚度，使得陶瓷层的峰之间的凹陷被完全填充，从而为转子提供显着降低的表面粗糙度的陶瓷表面硬化。在本发明的方法中，可以设置有钼粘合层的泵转子被等离子体涂覆有陶瓷，并且所得到的陶瓷层被金属材料顶层覆盖。抛光顶层，直到其尺寸在成品转子可接受的公差内，或者直到陶瓷层的大部分峰暴露。

5. 发明授权

US6039115A Safety coupling for rotary pump 失效
标题翻译：旋转泵的安全联轴器
公开(公告)号：US6039115A
公开(公告)日：2000-03-21
申请号：US49900
申请日：1998-03-28
申请人： Robert A. R. Mills
发明人： Robert A. R. Mills
IPC分类号： E21B43/12 , F16D7/04 , E21B43/00 , F16D9/00
CPC分类号： E21B43/126 , F16D7/044
摘要： A safety coupling for preventing backspin at excessive speeds of a torque transmitting drive string which stores reactive torque due to torsional stress. The safety coupling includes a rotatable driving member to be coupled with a rotatable driven member to be coupled with the driving string for axial rotation therewith. The driven member is movable relative to the driving member between an engaged position wherein the driving and driven members are coupled by a torque transfer structure to provide a positive driving connection between the torque transmitting drive and the shaft, and a disengaged position wherein the driving and the driven members are freely rotatable relative to each other so that back-spin of the torque transmitting drive is prevented. The driven member is biased into the disengaged position and forced into the engaged position only during forward rotation of the shaft. To start rotation of the shaft, the coupling further includes an auxiliary coupling component which transfers a selected torque between the driving and driven members for start-up of the shaft from standstill and to force the driven member into the engaged position. The auxiliary coupling component is disengaged before potentially dangerous levels of reactive torsion are stored in the shaft, which prevents potentially hazardous back-spin, should the main coupling components of the driving and driven members and torque transfer structure fail.
摘要翻译：一种安全联接装置，用于防止由于扭转应力而存储反作用转矩的转矩传递驱动线圈的过度转速。安全联接器包括可旋转的驱动构件，其与可旋转从动构件联接以与驱动柱联接以与其一起轴向旋转。从动构件可以在接合位置之间相对于驱动构件移动，其中驱动构件和从动构件通过扭矩传递结构联接以在扭矩传递驱动器和轴之间提供正的驱动连接，以及脱离位置，其中驱动和从动构件可相对于彼此自由旋转，从而防止扭矩传递驱动器的反向旋转。被驱动构件被偏压到脱离位置，并且仅在轴的正向旋转期间被迫进入接合位置。为了开始轴的旋转，联接器还包括辅助联接部件，该辅助联接部件在驱动部件和被驱动部件之间传递选定的扭矩，用于从静止状态启动轴并且迫使被驱动部件进入接合位置。如果驱动和被驱动构件的主联接部件和扭矩传递结构失效，辅助联接部件在潜在的危险水平的反作用扭矩存储在轴中之前脱开，这防止潜在的危险的反向旋转。

6. 发明授权

US5370179A Drive head for rotary down hole pump 失效
标题翻译：旋转井下泵驱动头
公开(公告)号：US5370179A
公开(公告)日：1994-12-06
申请号：US92222
申请日：1993-07-15
申请人： Robert A. R. Mills
发明人： Robert A. R. Mills
IPC分类号： E21B43/12 , E21D43/00
CPC分类号： E21B43/126
摘要： A drive head for a down hole rotary pump driven from a well head assembly by a drive string that extends through the well to the pump is disclosed. The drive head includes a hollow rotatable drive shaft having an axial passage for accommodating a slip shaft, a housing attachable to the well head assembly, radial bearings centering the drive shaft in the housing and a thrust bearing for supporting the weight of the drive shaft and the drive string suspended therefrom. A pulley is mounted on the shaft for driving the drive shaft. The slip shaft is mounted to the top end of a polished rod which is attached to a top end of the drive string. The slip shaft and the passage in the drive shaft are preferably hexagonal so that drive torque is transmitted to the drive string without slippage of the shaft. The drive string is suspended in the well by a clamp that grips a top end of the slip shaft and rests on a top of the housing. The advantages include the elimination of damage to the polished rod and/or the down hole pump due to polished rod clamp slippage, improved transmission of drive power, and a drive train that cannot be lost down the well when a clamp slips or breaks.
摘要翻译：公开了一种用于从井头组件通过驱动柱驱动的井下旋转泵的驱动头，驱动柱延伸穿过井到泵。驱动头包括中空的可旋转驱动轴，其具有用于容纳滑动轴的轴向通道，可连接到井口组件的壳体，将驱动轴定位在壳体中的径向轴承和用于支撑驱动轴的重量的止推轴承，驱动串悬挂在其上。滑轮安装在轴上用于驱动驱动轴。滑动轴安装到连接到驱动串的顶端的抛光棒的顶端。滑动轴和驱动轴中的通道优选是六边形的，使得驱动扭矩传递到驱动串而不滑动轴。驱动串通过夹紧滑动轴的顶端并搁置在壳体的顶部上的夹具悬挂在井中。优点包括消除由于抛光棒夹紧滑动导致的抛光杆和/或井下泵的损坏，改善驱动力的传输，以及当夹具滑动或断裂时不能损坏井的传动系。

7. 发明授权

US08723088B2 System and method for induction heating a helical rotor using a coil 有权
标题翻译：使用线圈感应加热螺旋转子的系统和方法
公开(公告)号：US08723088B2
公开(公告)日：2014-05-13
申请号：US13017669
申请日：2011-01-31
申请人： James Coulas , Robert A. R. Mills
发明人： James Coulas , Robert A. R. Mills
IPC分类号： H05B6/40
CPC分类号： H05B6/102 , C21D1/42 , C21D9/0068 , C21D9/28 , C21D11/00 , F04B15/023 , F04B53/00 , F04C2/1073 , F04C15/0096 , F04C2230/41 , F04C2240/20 , H05B6/40 , Y02P10/253
摘要： Embodiments of the invention provide a system and method for induction heating a helical rotor of a progressing cavity pump in order to reduce the surface roughness of the rotor. In order to heat the rotor most evenly, it is desired to space the coil as closely around the rotor as possible. The invention provides a mechanism for threading the helical rotor through an induction coil having an interior diameter which is less than the major diameter of the rotor. The induction coil may include one loop and overlapping ends. The rotor to be heated is rotated about its longitudinal axis and advanced axially through the coil as it rotates. The axial speed and rotational speed are synchronized so that the rotor moves one pitch through the coil for each complete rotation.
摘要翻译：本发明的实施例提供了一种用于感应加热前进腔泵的螺旋转子的系统和方法，以便减小转子的表面粗糙度。为了最均匀地加热转子，期望将线圈尽可能靠近转子放置。本发明提供了一种用于使螺旋转子穿过具有小于转子主直径的内径的感应线圈的机构。感应线圈可以包括一个环和重叠端。待加热的转子围绕其纵向轴线旋转并在其旋转时轴向前进通过线圈。轴向速度和旋转速度是同步的，因此每转动一次，转子将通过线圈移动一个节距。

8. 发明授权

US6155347A Method and apparatus for controlling the liquid level in a well 失效
标题翻译：用于控制井中液位的方法和装置
公开(公告)号：US6155347A
公开(公告)日：2000-12-05
申请号：US290160
申请日：1999-04-12
申请人： Robert A. R. Mills
发明人： Robert A. R. Mills
IPC分类号： E21B43/12 , E21B47/04 , E21B44/00 , E21B44/06
CPC分类号： E21B47/042 , E21B43/126
摘要： The present invention provides a method and apparatus for controlling the production rate of a rotary downhole pump to prevent well pump-off. The method includes the steps of operating the pump at a first speed less than a maximum rate of the pump until well fluid is produced at the wellhead. The operation is continued at the first speed until a first dynamic fluid level in the annulus between the production tubing and the wellbore or the well casing is stabilized. A first static load on the drivehead at the first dynamic fluid level is determined. The pump is then operated at a second speed higher than the first speed until the fluid level in the annulus is stabilized at a second dynamic fluid level. A second static load on the drivehead at the second dynamic fluid level is determined. A linear function of the load on the drivehead is determined as a function of the fluid level in the annulus. The linear function is used to calculate a critical load on the wellhead at a pump off point of the well where the fluid level in the annulus is equal to the insertion depth of the pump. The speed of the pump is reduced when the critical load is reached to prevent pump-off. The method and apparatus of the invention provides for the monitoring and control of the well pumping operation to prevent pump-off without the need for downhole monitoring or measuring equipment.
摘要翻译：本发明提供了一种用于控制旋转井下泵的生产率以防止井抽出的方法和装置。该方法包括以低于泵的最大速率的第一速度操作泵的步骤，直到井口产生井液。操作以第一速度继续，直到生产管道和井眼或井套管之间的环空中的第一动态流体液位稳定。确定驱动头上第一动态液位的第一静载荷。然后泵以比第一速度高的第二速度操作，直到环形空间中的液面稳定在第二动态流体水平。确定驱动头上第二动态液位的第二静载荷。驱动头上的负载的线性函数被确定为环空中的液位的函数。线性函数用于在井的泵离点处计算井口的临界负荷，其中环空中的液位等于泵的插入深度。达到临界负荷时，泵的速度降低，以防止泵送。本发明的方法和装置提供了井泵操作的监测和控制，以防止泵送而不需要井下监测或测量设备。

9. 发明授权

US5697768A Downhole swivel 失效
标题翻译：井下旋转
公开(公告)号：US5697768A
公开(公告)日：1997-12-16
申请号：US609727
申请日：1996-03-01
申请人： Robert A. R. Mills
发明人： Robert A. R. Mills
IPC分类号： E21B17/10 , E21B43/12 , F04C2/107 , F04C15/00
CPC分类号： E21B17/1064 , E21B17/1007 , E21B43/126
摘要： A method and apparatus is disclosed which reduces or removes axial loads on the drive string of a rotary downhole pump, i.e. tensile loads due to the hydrostatic load of the pumped liquid on the pump rotor, and/or at least part of the weight of the drive string, or thrust loads caused during pressurized fluid injection operations by backpressure of injected fluid on the pump rotor. This substantially prevents drive string/production tubing friction, wear and/or buckle in downhole rotary pumping arrangements operated in straight or curved well bores. When used in connection with fluid production pumping arrangements, the apparatus reduces the friction between the drive string and the production tubing of a downhole rotary pump for the pumping of well fluids which pump has a pump rotor connected to the drive string and is operated in a well bore. When used in connection with fluid injection pumping arrangements, the apparatus prevents drive string buckle, especially in curved well bore situations. The apparatus includes a support for rotatably supporting the drive string in the production tubing at a location above the pump, and a fluid passage for permitting the pumped fluid to flow from the pump to a wellhead of the well. The support includes an axial load bearing structure for supporting, from the production tubing, at least part of an axial load on the drive string either generated by the hydrostatic load of a pumped liquid on the pump rotor or backpressure of injected fluid on the pump rotor. The fluid passage is shaped and constructed such that the pumped fluid can flow from the pump past the axial load bearing means to the wellhead. In fluid pumping applications, the apparatus can also be used to support at least part of the weight of the drive string to reduce the axial load on the drivehead.
摘要翻译：公开了一种方法和装置，其减少或消除旋转井下泵的驱动串上的轴向载荷，即由泵泵转子上的泵送液体的静水压力引起的拉伸载荷和/或至少部分重量的驱动弦或在加压流体喷射操作期间通过在泵转子上的注入流体的背压而引起的推力负载。这实质上防止在直井或弯曲井眼中操作的井下旋转泵送装置中的驱动串/生产管道摩擦，磨损和/或带扣。当与流体生产泵送装置结合使用时，该装置减少驱动串和用于泵送井液的井下旋转泵的生产管道之间的摩擦，该泵具有连接到驱动柱的泵转子并且在一个井眼。当与流体注射泵送装置结合使用时，该装置防止驱动绳扣，特别是在弯曲的井眼情况下。该装置包括用于在泵的上方的位置处可旋转地支撑在生产管道中的驱动串的支撑件，以及用于允许泵送的流体从泵流到井的井口的流体通道。支撑件包括轴向承载结构，用于从生产管道支撑驱动柱上的至少部分轴向载荷，其由泵转子上的泵送液体的静水压力或泵转子上的注入流体的背压产生。流体通道的形状和构造使得泵送的流体可以从泵流过轴向承载装置到达井口。在流体泵送应用中，该装置还可用于支撑驱动串的至少一部分重量以减小驱动头上的轴向载荷。

10. 发明授权

US06564911B2 Braking assembly 有权
标题翻译：制动总成
公开(公告)号：US06564911B2
公开(公告)日：2003-05-20
申请号：US10044857
申请日：2002-01-11
申请人： Robert A. R. Mills
发明人： Robert A. R. Mills
IPC分类号： F16D6300
CPC分类号： F16D55/02 , F16D2121/14 , F16D2125/40 , F16D2127/004
摘要： The invention relates to a braking assembly for permitting axial rotation of a shaft in a first direction and inhibiting axial rotation of the shaft in a second, opposite direction, comprising: a hydraulic clutch having a torque generating member and a torque receiving member wherein the torque generating member is connected to the shaft and the torque receiving member is stationary and a guide means for maintaining the torque generating member in a first de-activated position when the shaft is rotated in the first direction and for moving the torque generating member to a second activated position when the shaft is rotated in the opposite direction whereby activation of the torque generating member inhibits rotation of the shaft in the second direction. The invention provides an effective emergency braking assembly for such systems as progressing cavity pumps in oil wells.
摘要翻译：本发明涉及一种用于允许轴沿第一方向轴向旋转并且阻止轴沿第二相反方向轴向旋转的制动组件，包括：液压离合器，具有扭矩产生构件和扭矩接收构件，其中扭矩所述发电构件连接到所述轴，并且所述转矩接收构件是静止的，以及引导装置，用于当所述轴沿所述第一方向旋转并将所述转矩产生构件移动到第二方向时，将所述转矩产生构件保持在第一非激活位置当轴沿相反的方向旋转时，致动位置，从而使转矩产生构件的启动禁止轴沿第二方向旋转。本发明提供了一种用于这种系统的有效的紧急制动组件，例如在油井中进行空腔泵。

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