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    Variable frequency temperature limited heaters
    1.
    发明申请
    Variable frequency temperature limited heaters 有权
    变频温度限制加热器

    公开(公告)号：US20050006097A1

    公开(公告)日：2005-01-13

    申请号：US10693700

    申请日：2003-10-24

    申请人： Chester Sandberg ,  Harold Vinegar ,  Christopher Harris ,  Jaime Son ,  Fredrick Carl

    发明人： Chester Sandberg ,  Harold Vinegar ,  Christopher Harris ,  Jaime Son ,  Fredrick Carl

    IPC分类号： E21B36/00 ,  E21B36/02 ,  E21B36/04 ,  E21B43/24

    CPC分类号： E21B36/008 ,  E21B36/02 ,  E21B36/04 ,  E21B43/24 ,  E21B43/2401 ,  H05B2214/03

    摘要： A heater system may include an alternating current supply and an electrical conductor. Alternating current may be applied to one or more electrical conductors at a frequency between about 100 Hz and about 1000 Hz. The electrical conductors may be located in a formation. The electrical conductors may resistively heat upon application of the alternating electrical current. At least one of the electrical conductors may include an electrically resistive ferromagnetic material. The electrical conductor may provide a reduced amount of heat above or near a selected temperature. Heat may transfer from the electrical conductor to a part of formation.

    摘要翻译： 加热器系统可以包括交流电源和电导体。 交流电可以以约100Hz至约1000Hz之间的频率施加到一个或多个电导体。 电导体可以位于地层中。 电导体可以在施加交流电流时进行电阻加热。 电导体中的至少一个可以包括电阻铁磁材料。 电导体可以在选定温度之上或附近提供减少量的热量。 热可能从电导体转移到形成部分。

    Temperature limited heaters with relatively constant current
    5.
    发明申请
    Temperature limited heaters with relatively constant current 有权

    公开(公告)号：US20060005968A1

    公开(公告)日：2006-01-12

    申请号：US11112878

    申请日：2005-04-22

    申请人： Harold Vinegar ,  Chester Sandberg ,  Christopher Harris

    发明人： Harold Vinegar ,  Chester Sandberg ,  Christopher Harris

    IPC分类号： E21B43/00 ,  E21B36/00

    CPC分类号： E21B36/04 ,  E21B43/12 ,  E21B43/122 ,  E21B43/24 ,  E21B43/2401 ,  E21B43/2405 ,  E21B43/38 ,  H05B3/141

    摘要： Certain embodiments provide a system configured to heat a subsurface formation. The system includes an electrical power supply. A heater section includes one or more electrical conductors electrically coupled to the electrical power supply. At least one of the electrical conductors includes ferromagnetic material. The heater section provides a first heat output when time-varying electrical current is applied to the heater section below a selected temperature, and a second heat output approximately at and above the selected temperature during use. The second heat output is reduced compared to the first heat output. The system is configured to allow heat to transfer from the heater section to a part of the formation. The electrical power supply is configured to provide a relatively constant amount of time-varying electrical current that remains within about 15% of a selected constant current value when a load of the electrical conductors changes.

    Variable frequency temperature limited heaters
    6.
    发明申请
    Variable frequency temperature limited heaters 失效
    变频温度限制加热器

    公开(公告)号：US20050269093A1

    公开(公告)日：2005-12-08

    申请号：US11112863

    申请日：2005-04-22

    申请人： Chester Sandberg ,  Harold Vinegar ,  Christopher Harris

    发明人： Chester Sandberg ,  Harold Vinegar ,  Christopher Harris

    IPC分类号： E21B29/00 ,  E21B36/04 ,  E21B43/00 ,  E21B43/12 ,  E21B43/24 ,  E21B43/30 ,  E21B43/38 ,  H05B3/10 ,  H05B3/14 ,  H05B6/10

    CPC分类号： E21B36/04 ,  E21B43/12 ,  E21B43/122 ,  E21B43/24 ,  E21B43/2401 ,  E21B43/2405 ,  E21B43/38 ,  H05B3/141

    摘要： Certain embodiments provide a heating system configured to heat at least a part of a subsurface formation. The system includes an electrical power supply. A heater section includes one or more electrical conductors electrically coupled to the electrical power supply. The heater section is configured to be placed in an opening in the formation. At least one of the electrical conductors includes ferromagnetic material. The heater section provides a first heat output when time-varying electrical current is applied to the heater section below a selected temperature, and provides a second heat output approximately at and above the selected temperature during use. The second heat output is reduced compared to the first heat output. The system is configured to allow heat to transfer from the heater section to a part of the formation. The system is configured to allow a frequency of the applied time-varying electrical current to be varied.

    摘要翻译： 某些实施例提供了构造成加热地下地层的至少一部分的加热系统。 该系统包括电源。 加热器部分包括电耦合到电源的一个或多个电导体。 加热器部分被配置成放置在地层中的开口中。 电导体中的至少一个包括铁磁材料。 当对加热器部分施加时间变化的电流低于所选择的温度时，加热器部分提供第一热量输出，并且在使用期间提供大约等于或高于选定温度的第二热输出。 与第一热输出相比，第二热输出减少。 该系统构造成允许热量从加热器部分转移到地层的一部分。 该系统被配置为允许施加的时变电流的频率变化。

    Temperature limited heaters with thermally conductive fluid used to heat subsurface formations
    7.
    发明申请
    Temperature limited heaters with thermally conductive fluid used to heat subsurface formations 失效
    带导热流体的温度限制加热器用于加热地下地层

    公开(公告)号：US20050269090A1

    公开(公告)日：2005-12-08

    申请号：US11112714

    申请日：2005-04-22

    申请人： Harold Vinegar ,  Christopher Harris

    发明人： Harold Vinegar ,  Christopher Harris

    IPC分类号： E21B29/00 ,  E21B36/04 ,  E21B43/00 ,  E21B43/12 ,  E21B43/24 ,  E21B43/30 ,  E21B43/38 ,  H05B3/10 ,  H05B3/14 ,  H05B6/10

    CPC分类号： E21B36/04 ,  E21B43/12 ,  E21B43/122 ,  E21B43/24 ,  E21B43/2401 ,  E21B43/2405 ,  E21B43/38 ,  H05B3/141

    摘要： Certain embodiments provide a system including a heater. The heater includes one or more electrical conductors. The heater is configured to generate a heat output during application of electrical current to the heater. The heater includes a ferromagnetic material. A conduit at least partially surrounds the heater. A fluid is located in a space between the heater and the conduit. The fluid has a higher thermal conductivity than air at standard temperature and pressure (STP) (0° C. and 101.325 kPa). The system is configured to provide (a) a first heat output below a selected temperature when time-varying electrical current is applied to the heater, and (b) a second heat output near or above the selected temperature when time-varying electrical current is applied to the heater.

    摘要翻译： 某些实施例提供包括加热器的系统。 加热器包括一个或多个电导体。 加热器被配置为在向加热器施加电流期间产生热量输出。 加热器包括铁磁材料。 导管至少部分地围绕加热器。 流体位于加热器和导管之间的空间中。 在标准温度和压力（STP）（0°C和101.325 kPa）下，流体的导热系数高于空气。 该系统被配置为当时变电流施加到加热器时，（a）在选定温度以下的第一热输出，以及（b）当时变电流为 应用于加热器。

    Varactor diode with doped voltage blocking layer
    10.
    发明授权
    Varactor diode with doped voltage blocking layer 有权
    具有掺杂电压阻挡层的变容二极管

    公开(公告)号：US08796809B2

    公开(公告)日：2014-08-05

    申请号：US12206209

    申请日：2008-09-08

    申请人： Christopher Harris

    发明人： Christopher Harris

    IPC分类号： H01L29/93 ,  H01L21/329 ,  H01L27/08 ,  H01L29/66 ,  H01L29/36 ,  H01L29/47 ,  H01L29/40 ,  H01L29/16 ,  H01L29/20 ,  H01L29/267

    CPC分类号： H01L29/93 ,  H01L27/0808 ,  H01L27/0811 ,  H01L29/1602 ,  H01L29/1608 ,  H01L29/2003 ,  H01L29/267 ,  H01L29/36 ,  H01L29/402 ,  H01L29/47 ,  H01L29/66174

    摘要： A varactor diode includes a contact layer having a first conductivity type, a voltage blocking layer having the first conductivity and a first net doping concentration on the contact layer, a blocking junction on the voltage blocking layer, and a plurality of discrete doped regions in the voltage blocking layer and spaced apart from the carrier injection junction. The plurality of discrete doped regions have the first conductivity type and a second net doping concentration that is higher than the first net doping concentration, and the plurality of discrete doped regions are configured to modulate the capacitance of the varactor diode as a depletion region of the varactor diode expands in response to a reverse bias voltage applied to the blocking junction. Related methods of forming a varactor diode are also disclosed.

    摘要翻译： 变容二极管包括具有第一导电类型的接触层，具有第一导电性的电压阻挡层和在接触层上的第一净掺杂浓度，电压阻挡层上的阻挡结，以及在该阻抗层中的多个离散掺杂区 电压阻挡层并与载流子注入结隔开。 所述多个离散掺杂区域具有高于第一净掺杂浓度的第一导电类型和第二净掺杂浓度，并且所述多个离散掺杂区域被配置为调制变容二极管的电容作为所述第一净掺杂浓度的耗尽区 变容二极管响应于施加到阻塞结的反向偏置电压而膨胀。 还公开了形成变容二极管的相关方法。