Lift apparatus for driving a downhole reciprocating pump

    公开(公告)号:US10072487B2

    公开(公告)日:2018-09-11

    申请号:US15656252

    申请日:2017-07-21

    Inventor: Dan McCarthy

    Abstract: A lift apparatus and method for driving a downhole reciprocating pump is disclosed. The apparatus includes a hydraulic cylinder having a piston and a hydraulic fluid port, the piston being coupled to a rod for driving the reciprocating pump, the piston being moveable between first and second ends of the cylinder in response to a flow of hydraulic fluid through the hydraulic fluid port. The apparatus also includes a variable displacement hydraulic pump coupled to receive a substantially constant rotational drive from a prime mover for operating the hydraulic pump, the hydraulic pump having an outlet and being responsive to a displacement control signal to draw hydraulic fluid from a reservoir and to produce a controlled flow of hydraulic fluid at the outlet. The apparatus also includes a hydraulic fluid line connected to deliver hydraulic fluid from the outlet of the hydraulic pump through the hydraulic fluid port to the cylinder for causing the piston to move through an upstroke away from the first end and toward the second end of the cylinder. The apparatus further includes a valve connected between the hydraulic fluid port and the reservoir, the valve being responsive to a valve control signal for controlling discharge of hydraulic fluid from the hydraulic fluid port of the cylinder back to the reservoir to facilitate movement of the piston through a downstroke away from the second end toward the first end of the cylinder. The valve is operable to prevent flow of hydraulic fluid through the valve during the upstroke and the hydraulic pump is operable to prevent flow of hydraulic fluid back into the outlet of the hydraulic pump during the downstroke.

    Calculating Downhole Pump Card With Iterations on Single Damping Factor
    76.
    发明申请
    Calculating Downhole Pump Card With Iterations on Single Damping Factor 有权
    计算单个阻尼因子迭代的井下泵卡

    公开(公告)号:US20130115104A1

    公开(公告)日:2013-05-09

    申请号:US13663167

    申请日:2012-10-29

    Inventor: Victoria M. Pons

    Abstract: A pump apparatus has a downhole pump disposed in a wellbore and has a motor at the surface, and a rod string operatively moved by the motor reciprocates the downhole pump in the wellbore. Downhole data indicative of load and position of the downhole pump is generated using surface measurements and a wave equation model having a damping factor. Actual fluid load lines are determined from the downhole data for upstrokes and downstrokes of the downhole pump, and calculated fluid load lines for from the strokes are determined from the distribution of the load values in the downhole data. The actual fluid load lines are compared to the calculated fluid load lines to determine if the downhole data is over or under-damped. Then, the damping factor of the wave equation model can be adjusted so that new downhole data can be generated with appropriate damping.

    Abstract translation: 泵装置具有设置在井眼中的井下泵,并且在表面具有马达,并且由马达可操作地移动的杆串使钻井中的井下泵往复运动。 使用表面测量和具有阻尼因子的波动方程模型产生表示井下泵的载荷和位置的井下数据。 实际流体载荷线由井下泵上下冲击的井下数据确定,根据井下数据中载荷值的分布确定来自冲程的流体载荷线。 将实际的流体负载管线与计算的流体负荷管线进行比较,以确定井下数据是否超过或不足。 然后,可以调整波动方程模型的阻尼因子,使得可以通过适当的阻尼产生新的井下数据。

    Method for mitigating rod float in rod pumped wells
    77.
    发明授权
    Method for mitigating rod float in rod pumped wells 有权
    杆抽水井减轻杆浮子的方法

    公开(公告)号:US07547196B2

    公开(公告)日:2009-06-16

    申请号:US11228109

    申请日:2005-09-16

    Abstract: Rod Float Mitigation (RFM) methods for rod-pumped oil wells having a variable frequency drive which controls the speed of the motor for the pump. Each method monitors rod loads or a similar condition and takes action only when rod load drops below a predefined minimum load. A first method reduces the speed of the motor to a preset level. A second method fixes the torque level on the pump downstroke by adjusting motor speed based on a calculated gearbox torque compared to a programmed fixed limit. Another method includes a program in the variable frequency drive which includes a preferred RFM Torque Curve for the pump to follow on its downstroke. When rod float occurs, the program monitors gearbox torque and adjusts the speed to follow the predetermined RFM Torque Curve thereby mitigating rod float with minimum decrease in production.

    Abstract translation: 用于控制泵的电机速度的变频驱动的杆式泵油井的杆浮子减轻(RFM)方法。 每种方法监测杆载荷或类似的条件,只有当杆载荷低于预定义的最小载荷时才采取措施。 第一种方法将电机的速度降低到预设的水平。 第二种方法通过根据与编程的固定极限相比计算出的齿轮箱转矩来调节电机转速来定义泵下行程中的转矩水平。 另一种方法包括可变频率驱动器中的程序,其包括用于泵跟随其下行程序的优选RFM扭矩曲线。 当发生杆浮子发生时,程序监控变速箱扭矩并调整速度以遵循预定的RFM扭矩曲线,从而以最小的生产减少减轻杆浮子。

    METHOD AND APPARATUS FOR MEASURING WORK PERFORMED BY A COMPRESSOR
    78.
    发明申请
    METHOD AND APPARATUS FOR MEASURING WORK PERFORMED BY A COMPRESSOR 审中-公开
    用于测量压缩机执行工作的方法和装置

    公开(公告)号:US20070132603A1

    公开(公告)日:2007-06-14

    申请号:US11627811

    申请日:2007-01-26

    Abstract: An apparatus and method for monitoring a reciprocating member of a reciprocating piston compressor is presented. The apparatus and method provide a means for measuring parameters of the reciprocating member, such as road load or cross-head temperature and the like, and wirelessly transmitting the data to a receiver. A mobile assembly is attached to a reciprocating member of the compressor, the mobile assembly having a sensor assembly, a wireless transmitter and a power generation assembly. The sensor assembly measures a parameter of the reciprocating member and generates a representative sensor signal. The wireless transmitter wirelessly transmits a corresponding data signal to a stationary assembly mounted nearby. The power assembly powers the transmitter and sensor assembly. The measured data is used, in conjunction with other measurements, such as a crankshaft encoder, to calculate the work performed by the compressor, the power used by the compressor and other information. The compressor utilization is then optimized based on the gathered information.

    Abstract translation: 提出了一种用于监测往复式活塞式压缩机的往复运动件的装置和方法。 该装置和方法提供了一种用于测量往复运动构件的参数的装置,例如道路负荷或十字头温度等,并将数据无线地传送到接收器。 移动组件连接到压缩机的往复运动构件,移动组件具有传感器组件,无线发射器和发电组件。 传感器组件测量往复构件的参数并产生代表性的传感器信号。 无线发射机将相应的数据信号无线传输到安装在附近的固定组件。 电源组件为变送器和传感器组件供电。 测量数据与其他测量结合使用,例如曲轴编码器,以计算压缩机执行的功能,压缩机使用的功率和其他信息。 然后基于收集的信息优化压缩机利用率。

    Integrated control system for beam pump systems
    79.
    发明授权
    Integrated control system for beam pump systems 有权
    梁泵系统综合控制系统

    公开(公告)号:US07032659B2

    公开(公告)日:2006-04-25

    申请号:US10350157

    申请日:2003-01-23

    CPC classification number: F04B47/026 F04B47/02 F04B49/06 F04B2201/121

    Abstract: The present invention generally provides apparatus and methods of operating a pumping system. The pump control apparatus includes a first sensor for measuring strain on a structure of the well pumping system and a second sensor for measuring a position of the structure. The apparatus also has a controller configured to control the well unit by receiving output signals from the first and second sensors and generating control signals according to a motor control sequence. This controller may be mounted to the structure of the pumping system to measure the strain experienced by the structure. The control signals may be transmitted to a motor control panel using a cable-less communications system. Preferably, the first sensor, the second sensor, and the controller are integrated into a single unit. In another embodiment, the pump control apparatus may be self-powered.

    Abstract translation: 本发明通常提供操作泵送系统的装置和方法。 泵控制装置包括用于测量井泵系统结构的应变的第一传感器和用于测量结构位置的第二传感器。 该装置还具有控制器,其被配置为通过接收来自第一和第二传感器的输出信号并根据电机控制顺序产生控制信号来控制井单元。 该控制器可以安装到泵送系统的结构以测量结构所经历的应变。 控制信号可以使用无线通信系统发送到电动机控制面板。 优选地,第一传感器,第二传感器和控制器被集成到单个单元中。 在另一个实施例中,泵控制装置可以是自供电的。

    Method and apparatus for measuring work performed by a compressor
    80.
    发明申请
    Method and apparatus for measuring work performed by a compressor 有权
    用于测量由压缩机执行的工作的方法和装置

    公开(公告)号:US20040193384A1

    公开(公告)日:2004-09-30

    申请号:US10397889

    申请日:2003-03-26

    Abstract: An apparatus and method for monitoring a reciprocating member of a reciprocating piston compressor is presented. The apparatus and method provide a means for measuring parameters of the reciprocating member, such as road load or cross-head temperature and the like, and wirelessly transmitting the data to a receiver. A mobile assembly is attached to a reciprocating member of the compressor, the mobile assembly having a sensor assembly, a wireless transmitter and a power generation assembly. The sensor assembly measures a parameter of the reciprocating member and generates a representative sensor signal. The wireless transmitter wirelessly transmits a corresponding data signal to a stationary assembly mounted nearby. The power assembly powers the transmitter and sensor assembly. The measured data is used, in conjunction with other measurements, such as a crankshaft encoder, to calculate the work performed by the compressor, the power used by the compressor and other information. The compressor utilization is then optimized based on the gathered information.

    Abstract translation: 提出了一种用于监测往复式活塞式压缩机的往复运动件的装置和方法。 该装置和方法提供了一种用于测量往复运动构件的参数的装置,例如道路负荷或十字头温度等,并将数据无线地传送到接收器。 移动组件连接到压缩机的往复运动构件,移动组件具有传感器组件,无线发射器和发电组件。 传感器组件测量往复构件的参数并产生代表性的传感器信号。 无线发射机将相应的数据信号无线传输到安装在附近的固定组件。 电源组件为变送器和传感器组件供电。 测量数据与其他测量结合使用,例如曲轴编码器,以计算压缩机执行的功能,压缩机使用的功率和其他信息。 然后基于收集的信息优化压缩机利用率。

Patent Agency Ranking