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1. 发明申请

WO2013147758A1 DOWNHOLE FLUID RESISTIVITY SENSOR SYSTEMS AND METHODS 审中-公开
标题翻译：井下流体电阻传感器系统和方法
公开(公告)号：WO2013147758A1
公开(公告)日：2013-10-03
申请号：PCT/US2012/030851
申请日：2012-03-28
申请人： HALLIBURTON ENERGY SERVICES, INC. , ZHANG, Wei , ZHANG, Lizheng , GAO, Li , BALL, David, E.
发明人： ZHANG, Wei , ZHANG, Lizheng , GAO, Li , BALL, David, E.
IPC分类号： G01V3/18
CPC分类号： G01V3/02 , E21B49/08 , G01V3/20
摘要： Disclosed is a downhole fluid resistivity sensor that includes a ceramic cylinder having a fluid -contacting surface, and at least four metal pins that penetrate a wall of the ceramic cylinder at axially-spaced locations. The pins are bonded to the ceramic to form a pressure seal. The sensor may include a circuit that injects current into a fluid via an outer two of the pins, and measures a resulting voltage via an inner two of the pins. The circuit may also provide an indication of fluid resistivity based at least in part on the resulting voltage. At each of the axially-spaced locations, a set of multiple pins may penetrate the wall to contact the fluid at circumferentially-spaced positions. The fluid- contacting surface may be an inner surface or an outer surface of the ceramic cylinder. A downhole fluid resistivity measurement method is also described.
摘要翻译：公开了一种井下流体电阻率传感器，其包括具有流体接触表面的陶瓷圆柱体，以及至少四个金属销，其在轴向间隔开的位置处穿过陶瓷圆柱体的壁。销钉结合到陶瓷上以形成压力密封。传感器可以包括经由外部两个引脚将电流注入流体的电路，并且经由内部两个引脚测量所得到的电压。该电路还可以至少部分地基于所得到的电压来提供流体电阻率的指示。在每个轴向间隔的位置处，一组多个销可以穿透壁以在周向间隔的位置处接触流体。流体接触表面可以是陶瓷圆筒的内表面或外表面。还描述了井下流体电阻率测量方法。

2. 发明申请

WO2004099552A2 DETERMINING GRADIENTS USING A MULTI-PROBED FORMATION TESTER 审中-公开
标题翻译：使用多个成像测试仪确定梯度
公开(公告)号：WO2004099552A2
公开(公告)日：2004-11-18
申请号：PCT/US2004/013553
申请日：2004-05-03
申请人： HALLIBURTON ENERGY SERVICES, INC. , PROETT, Mark, A. , GILBERT, Gregory, N. , BALL, David, E.
发明人： PROETT, Mark, A. , GILBERT, Gregory, N. , BALL, David, E.
IPC分类号： E21B
CPC分类号： E21B49/005 , E21B49/08 , E21B49/087 , G01N9/26
摘要： Methods for operating multi-probed formation testers to determine a fluid density gradient in the formation. The probes of the multi-probed formation tester are connected to a pressure gauge through a flowline that establishes a differential height between the probes. In some embodiments, a gradient of the fluid density in the flowline is determined as a function of the gradient of fluid density in the wellbore. The flowline fluid density gradient is then used to determine a formation fluid density gradient as a function of the flowline fluid density gradient.
摘要翻译：用于操作多探测地层测试仪以确定地层中流体密度梯度的方法。多探针形成测试器的探针通过流线形成连接到压力计，该流线确定了探针之间的差异高度。在一些实施例中，流线中的流体密度的梯度被确定为井筒中流体密度梯度的函数。然后使用流线流体密度梯度来确定作为流线流体密度梯度的函数的地层流体密度梯度。

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