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    • 8. 发明授权
    • In situ conversion process systems utilizing wellbores in at least two regions of a formation
    • 在地层的至少两个区域中利用井筒的原位转化过程系统
    • US08027571B2
    • 2011-09-27
    • US11409558
    • 2006-04-21
    • Harold J. VinegarChia-Fu Hsu
    • Harold J. VinegarChia-Fu Hsu
    • H05B3/02
    • E21B43/24C07C4/02E21B17/028E21B36/001E21B36/04E21B43/243Y10T29/49179C07C9/04
    • A system for heating a subsurface formation is described. The system includes a plurality of elongated heaters located in a plurality of openings in the formation. At least two of the heaters are substantially parallel to each other for at least a portion of the lengths of the heaters. At least two of the heaters have first end portions in a first region of the formation and second end portions in a second region of the formation. A source of time-varying current is configured to apply time-varying current to at least two of the heaters. The first end portions of at least two heaters are configured to have substantially the same voltage applied to them. The second portions of at least two heaters are configured to have substantially the same voltage applied to them.
    • 描述了用于加热地下地层的系统。 该系统包括位于地层中的多个开口中的多个细长的加热器。 对于加热器的长度的至少一部分,至少两个加热器基本上彼此平行。 至少两个加热器在地层的第一区域中具有第一端部,在地层的第二区域中具有第二端部。 时变电流的源被配置为对至少两个加热器施加时变电流。 至少两个加热器的第一端部构造成具有施加到它们的基本上相同的电压。 至少两个加热器的第二部分被配置成具有施加到它们的基本相同的电压。
    • 9. 发明授权
    • Balanced-line RF electrode system for use in RF ground heating to
recover oil from oil shale
    • 平衡线RF电极系统,用于RF地面加热,以从油页岩中回收油
    • US5236039A
    • 1993-08-17
    • US899839
    • 1992-06-17
    • William A. EdelsteinHarold J. VinegarChia-Fu HsuOtward M. Mueller
    • William A. EdelsteinHarold J. VinegarChia-Fu HsuOtward M. Mueller
    • E21B36/04E21B43/24E21B43/30
    • E21B43/30E21B36/04E21B43/2401
    • An in-situ method of extracting oil from a hydrocarbon bearing layer such as oil-shale or tar sands lying beneath a surface layer comprises applying a radiofrequency excitation signal to the hydrocarbon bearing layer through a system of electrodes. The electrodes are inserted into a matrix of holes drilled through the surface layer and into the hydrocarbon bearing layer. A coaxial line extending through the surface layer is connected to the electrodes extending into the hydrocarbon bearing layer. The electrodes have a length that is an integral number of quarter wavelengths of the radiofrequency energy. A matching network connected between the coaxial cable and a respective one of the electrodes maximizes the power flow into each electrode. The electrodes are excited uniformly in rows and as a "balanced-line" RF array where adjacent rows of electrodes are 180.degree. out of phase. This method does not produce substantial heating of the surface layer or the region surrounding the producing layer, and concentrates most of its power in the hydrocarbon bearing layer.
    • 从位于表面层下方的油页岩或焦油砂等含烃层提取油的原位方法包括通过电极系统向载流层施加射频激发信号。 将电极插入穿过表面层并进入含烃层的孔的矩阵中。 延伸穿过表面层的同轴线连接到延伸进入承载层的电极。 电极的长度是射频能量的四分之一波长的整数。 连接在同轴电缆和相应电极之间的匹配网络使流入每个电极的功率流最大化。 电极被均匀地激发成行,并且作为相邻行电极相位相差180°的“平衡线”RF阵列。 该方法不会对生产层周围的表面层或区域产生实质的加热,并且将其大部分功率集中在含烃层中。