Controlled downhole chemical injection
    2.
    发明授权
    Controlled downhole chemical injection 失效
    控制井下化学注入

    公开(公告)号:US06981553B2

    公开(公告)日:2006-01-03

    申请号:US10220372

    申请日:2001-03-02

    IPC分类号: E21B43/00

    摘要: A petroleum well having a well casing, a production tubing, a source of time-varying current, a downhole chemical injection device, and a downhole induction choke. The casing extends within a wellbore of the well. The tubing extends within the casing. The current source is located at the surface. The current source is electrically connected to, and adapted to output a time-varying current into, the tubing and/or the casing, which act as electrical conductors for providing downhole power and/or communications. The injection device having a communications and control module, a chemical container, and an electrically controllable chemical injector. The communications and control module is electrically connected to the tubing and/or the casing. The chemical injector is electrically connected to the communications and control module, and is in fluid communication with the chemical container. The downhole induction choke is located about a portion of the tubing and/or the casing. The chemical injector is electrically connected to the communications and control module, and is in fluid communication with the chemical container. The downhole induction choke is located about a portion of the tubing and/or the casing. The induction choke is adapted to route part of the electrical current through the communications and control module by creating a voltage potential between one side of the induction choke and another side of the induction choke. The communications and control module is electrically connected across the voltage potential. Also, a method is provided for controllably injecting a chemical into the well downhole, which may be used to: improve lift efficiency with a foaming agent, prevent deposition of solids with a paraffin solvent, improve a flow characteristic of the flow stream with a surfactant, prevent corrosion with a corrosion inhibitor, and/or prevent scaling with scale preventers.

    摘要翻译: 具有井套管,生产管道,时变电流源,井下化学注入装置和井下感应扼流圈的石油井。 套管在井的井筒内延伸。 管道在套管内延伸。 电流源位于表面。 电流源电连接到并且适于将时变电流输出到用作提供井下功率和/或通信的电导体的管道和/或壳体中。 注射装置具有通信和控制模块,化学容器和电可控化学注射器。 通信和控制模块电连接到管道和/或壳体。 化学注射器电连接到通信和控制模块,并且与化学容器流体连通。 井下感应扼流圈位于管和/或壳体的一部分周围。 化学注射器电连接到通信和控制模块,并且与化学容器流体连通。 井下感应扼流圈位于管和/或壳体的一部分周围。 感应扼流圈适于通过在感应扼流圈的一侧和感应扼流圈的另一侧之间产生电压而将部分电流通过通信和控制模块。 通信和控制模块跨越电压电位电连接。 此外,提供了一种用于可控地将化学品注入井下孔的方法,其可用于:利用发泡剂提高提升效率,防止固体与石蜡溶剂沉积,用表面活性剂改善流动流的流动特性 ,防止腐蚀抑制剂腐蚀,和/或防止防垢剂结垢。

    Measuring focused through-casing resistivity using induction chokes and also using well casing as the formation contact electrodes

    公开(公告)号:US06633164B2

    公开(公告)日:2003-10-14

    申请号:US09798192

    申请日:2001-03-02

    IPC分类号: G01V318

    摘要: A petroleum well (20) for producing petroleum products that incorporates a system adapted to controllably measure a formation resistivity using induction chokes (91-95) to form electrically isolated piping structure sections that can be used as the formation contact electrodes for time-varying current, and methods of producing petroleum products while measuring formation resistivity, are provided by the present invention. The system comprises a first induction choke (91), a second induction choke (92), and a device (50). The first induction choke (91) is located about a piping structure (30) of the well (20). The second induction choke (92) is also located about the piping structure (30) of the well (20), but the first induction choke (91) is distally spaced from the second induction choke (92). The device (50) is located outside of the piping structure (30) and comprises two terminals (71, 72). A first of the terminals (71) extending from the device (50) is electrically connected to the piping structure (30) on one side (81) of the first induction choke (91). A second of the terminals (72) extending from the device (50) is electrically connected to the piping structure (30) on another side (82) of the first induction choke (91), between the first and second induction chokes (91, 92), such that the downhole device (50) is electrically connected across an outside of the first induction choke (91). The system can further comprise other induction chokes (93-95), other terminals (97-99) extending from the device (50), a current sensor (114), a surface power source (54), a power transformer (104), a communications transformer (106), a surface modem (56), a downhole modem (102), a direct current power supply (101), and/or a power amplifier (110, 112). The piping structure can comprise at least a portion of a well casing (30), such that the well casing (30) acts as an electrode for making formation resistivity measurements due to the induction chokes (91-95).

    Power generation using batteries with reconfigurable discharge
    7.
    发明授权
    Power generation using batteries with reconfigurable discharge 失效
    使用具有可重新配置放电的电池的发电

    公开(公告)号:US07075454B2

    公开(公告)日:2006-07-11

    申请号:US10220253

    申请日:2001-03-02

    IPC分类号: G01V13/02

    摘要: A petroleum well for producing petroleum products that incorporates a system adapted to provide power to a downhole device in the well. The system includes a current impedance device and a downhole power storage device. The current impedance device is positioned such that when a time-varying electrical current is transmitted through the portion of a piping structure and/or a voltage potential forms between one side of the current impedance device and another side of the current impedance device. The device is adapted to be electrically connected to the piping structure and/or across the voltage potential formed by the current impedance device, is adapted to be recharged by the electrical current, and is adapted to be electrically connected to the downhole device to provide power to the downhole device as needed.

    摘要翻译: 用于生产石油产品的石油井,其结合了适于向井中的井下装置提供动力的系统。 该系统包括电流阻抗装置和井下蓄电装置。 电流阻抗器件被定位成使得当电流阻抗器件的一侧与电流阻抗器件的另一侧之间形成时变电流通过管道结构的部分和/或电压电势时。 该装置适于电连接到管道结构和/或跨过由电流阻抗装置形成的电压电势,适于由电流再次充电,并且适于电连接到井下装置以提供功率 根据需要到井下装置。

    Oil well casting electrical power pick-off points
    8.
    发明授权
    Oil well casting electrical power pick-off points 有权
    油井铸造电力输出点

    公开(公告)号:US07170424B2

    公开(公告)日:2007-01-30

    申请号:US10220402

    申请日:2001-03-02

    IPC分类号: G01V3/02

    CPC分类号: E21B47/12

    摘要: A power supply apparatus is provided for supplying power and communications within a first piping structure. An external power transfer device is positioned around the first piping structure and is magnetically coupled to an internal power transfer device. The internal power transfer device is positioned around a second piping structure disposed within the first piping structure. A main surface current flowing on the first piping structure induces a first surface current within the external power transfer device. The first surface current causes a second surface current to be induced within the internal power transfer device.

    摘要翻译: 提供一种用于在第一管道结构内供电和通信的电源装置。 外部动力传递装置位于第一管道结构周围,并且磁耦合到内部动力传递装置。 内部动力传递装置围绕设置在第一管道结构内的第二管道结构定位。 在第一管道结构上流动的主表面电流在外部电力传送装置内引起第一表面电流。 第一表面电流导致在内部功率传输装置内引起第二表面电流。

    Permanent downhole, wireless, two-way telemetry backbone using redundant repeaters
    9.
    发明授权
    Permanent downhole, wireless, two-way telemetry backbone using redundant repeaters 有权
    永久井下无线双向遥测骨干网使用冗余中继器

    公开(公告)号:US06633236B2

    公开(公告)日:2003-10-14

    申请号:US09768655

    申请日:2001-01-24

    IPC分类号: B01V300

    摘要: A system and method of communicating among devices via a piping structure using at least one induction choke about the piping structure to route a time-varying current carrying communication signals between the devices. A communications system comprises a piping structure, a first communication device, a second communication device, and an induction choke. The piping structure comprises a first location, a second location, and an electrically conductive portion extending between the first and second locations. The first and second locations are distally spaced along the piping structure. The first and second communication devices are each electrically connected to the electrically conductive portion of the piping structure along the first location and second location, respectively, and each is adapted to send and receive communication signals via time-varying current. The induction choke is located about an electrically choked portion of the electrically conductive portion of the piping structure, such that the induction choke is adapted to route time-varying current within the piping structure between the electrical connection location for the first communication device and the electrical connection location for the second communication device, and such that the first communication device can communicate with the second communication device via the piping structure. A preferred application of the present invention is a well for producing petroleum products (e.g., oil, natural gas), comprising a communication system as described above.

    摘要翻译: 一种通过管道结构在设备之间通过管道结构使用至少一个感应扼流圈进行通信的系统和方法,以便在设备之间路由携带通信信号的时变电流。 通信系统包括管道结构,第一通信设备,第二通信设备和感应扼流圈。 管道结构包括第一位置,第二位置和在第一和第二位置之间延伸的导电部分。 第一和第二位置沿着管道结构向远侧间隔开。 第一和第二通信设备分别沿着第一位置和第二位置电连接到管道结构的导电部分,并且每个通信设备适于经由时变电流发送和接收通信信号。 感应扼流圈位于管道结构的导电部分的电阻塞部分周围,使得感应扼流圈适于在第一通信设备的电连接位置和电气连接位置之间布置管道结构内的时变电流 用于第二通信设备的连接位置,并且使得第一通信设备可以经由管道结构与第二通信设备通信。 本发明的优选应用是用于生产包含如上所述的通信系统的石油产品(例如油,天然气)的良好应用。