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    Fuel cell for downhole power systems
    3.
    发明授权
    Fuel cell for downhole power systems 有权
    用于井下电力系统的燃料电池

    公开(公告)号：US06686079B2

    公开(公告)日：2004-02-03

    申请号：US09854947

    申请日：2001-05-14

    申请人： Wenlin Zhang ,  Donald E. Hensley ,  Kenneth L. Havlinek

    发明人： Wenlin Zhang ,  Donald E. Hensley ,  Kenneth L. Havlinek

    IPC分类号： H01M804

    CPC分类号： H01M8/2425 ,  E21B33/0355 ,  E21B41/0085 ,  H01M8/04007 ,  H01M8/04089 ,  H01M8/04156 ,  H01M8/24 ,  H01M8/241

    摘要： One embodiment of the present invention is a fuel cell suitable for use downhole in an oil and gas well includes a fuel vessel that providing a source of fuel and an oxidant vessel providing a source of oxidant. A reaction zone comprises at least one cathode, at least one anode, and an electrolyte between each anode and cathode. A closed water vessel is connected to the reaction zone by at least one capillary flow path. The fuel cell also comprises a fuel conduit that connects the fuel vessel and the reaction zone. This fuel conduit comprises a fuel pressure control apparatus adapted to maintain a static pressure of fuel in the reaction zone. The fuel cell further comprises an oxidant conduit that connects the oxidant vessel and the reaction zone, and includes an oxidant pressure control apparatus adapted to maintain a static pressure of oxidant in the reaction zone. In addition, the fuel cell comprises electrical conductors connected to the anode and cathode and adapted to conduct electricity to an external device. In this fuel cell, there is no need for fuel, oxidant, or water to flow in a closed loop through the reaction zone.

    摘要翻译： 本发明的一个实施例是适用于油井井下的燃料电池井，其包括提供燃料源的燃料容器和提供氧化剂源的氧化剂容器。 反应区包括在每个阳极和阴极之间的至少一个阴极，至少一个阳极和电解质。 封闭的水容器通过至少一个毛细管流路与反应区连接。 燃料电池还包括连接燃料容器和反应区的燃料管道。 该燃料管道包括适于维持反应区域中燃料的静压的燃料压力控制装置。 燃料电池还包括连接氧化剂容器和反应区的氧化剂导管，并且包括适于维持反应区中的氧化剂静态压力的氧化剂压力控制装置。 此外，燃料电池包括连接到阳极和阴极的电导体，并适于将电力传导到外部设备。 在该燃料电池中，不需要燃料，氧化剂或水在闭环中流过反应区。

    Apparatus and method for formation evaluation
    9.
    发明授权
    Apparatus and method for formation evaluation 有权
    地层评价装置及方法

    公开(公告)号：US07178591B2

    公开(公告)日：2007-02-20

    申请号：US10711187

    申请日：2004-08-31

    申请人： Christopher S. Del Campo ,  Raymond V. Nold, III ,  Noriyuki Matsumoto ,  Mark Milkovisch ,  Hisayo Tauchi ,  Jonathan W. Brown ,  Ricardo Vasques ,  Kenneth L. Havlinek

    发明人： Christopher S. Del Campo ,  Raymond V. Nold, III ,  Noriyuki Matsumoto ,  Mark Milkovisch ,  Hisayo Tauchi ,  Jonathan W. Brown ,  Ricardo Vasques ,  Kenneth L. Havlinek

    IPC分类号： E21B49/10 ,  E21B49/08

    CPC分类号： E21B49/10

    摘要： Techniques for reduced contamination formation evaluation are provided. The techniques relate to drawing fluid into a downhole tool positionable in a wellbore penetrating a subterranean formation having a virgin fluid and a contaminated fluid therein. Fluid is drawn into at least two inlets for receiving the fluids from the formation. At least one evaluation flowline is fluidly connected to at least one of the inlets for passage of the virgin fluid into the downhole tool. At least one cleanup flowline is fluidly connected to the inlets for passage of the contaminated fluid into the downhole tool. At least one fluid circuit is fluidly connected to the evaluation flowline and/or cleanup flowlines for selectively drawing fluid therein. At least one fluid connector is provided for selectively establishing a fluid connection between the flowlines. At least one sensor is provided for measuring downhole parameters in one of the flowlines. Fluid may be selectively pumped through the flowlines to reduce the contamination in the evaluation flowline.

    摘要翻译： 提供了减少污染物形成评估的技术。 这些技术涉及将流体引入井下工具中，井下工具可定位在渗透具有原始流体和其中的污染流体的地下地层的井眼中。 流体被吸入至少两个用于从地层接收流体的入口。 至少一个评估流线与至少一个入口流体连接，以将原始流体通入井下工具。 至少一个净化流线流体地连接到入口，以将污染的流体通入井下工具。 至少一个流体回路流体地连接到评估流线和/或清理流线，用于选择性地在其中抽取流体。 提供至少一个流体连接器用于选择性地在流线之间建立流体连接。 提供至少一个传感器用于测量其中一条流线中的井下参数。 流体可以选择性地泵送通过流线，以减少评估流线中的污染。