Fluid density from downhole optical measurements
    11.
    发明授权
    Fluid density from downhole optical measurements 有权
    井下光学测量的流体密度

    公开(公告)号:US08434356B2

    公开(公告)日:2013-05-07

    申请号:US12543017

    申请日:2009-08-18

    IPC分类号: E21B47/10

    摘要: A system and method for determining at least one fluid characteristic of a downhole fluid sample using a downhole tool are provided. In one example, the method includes performing a calibration process that correlates optical and density sensor measurements of a fluid sample in a downhole tool at a plurality of pressures. The calibration process is performed while the fluid sample is not being agitated. At least one unknown value of a density calculation is determined based on the correlated optical sensor measurements and density sensor measurements. A second optical sensor measurement of the fluid sample is obtained while the fluid sample is being agitated. A density of the fluid sample is calculated based on the second optical sensor measurement and the at least one unknown value.

    摘要翻译: 提供了一种用于使用井下工具确定井下流体样品的至少一种流体特性的系统和方法。 在一个示例中,该方法包括执行校准过程,其将多个压力下的井下工具中的流体样品的光学和密度传感器测量值相关联。 校准过程在流体样品未被搅动时进行。 基于相关的光学传感器测量和密度传感器测量确定密度计算的至少一个未知值。 在流体样品被搅动的同时获得液体样品的第二光学传感器测量。 基于第二光学传感器测量和至少一个未知值计算流体样本的密度。

    CALIBRATION AND CONSISTENCY CHECK OF VARIABLEW VOLUME SYSTEMS
    12.
    发明申请
    CALIBRATION AND CONSISTENCY CHECK OF VARIABLEW VOLUME SYSTEMS 有权
    可变量体系的校准和一致性检查

    公开(公告)号:US20130110401A1

    公开(公告)日:2013-05-02

    申请号:US13596996

    申请日:2012-08-28

    IPC分类号: G06F17/00

    摘要: Variable volume systems and methods of use thereof described herein are capable of making calibrated determinations of fluid properties and phase behavior of a fluid sample. The determinations can be calibrated based on one or more calibration functions, such as system volume corrected for pressure and temperature variations. Cross-checking the results of measurements can be used to determine accuracy of the calibration or monitor for leaks or other anomalies of the variable volume systems. The variable volume systems can be implemented in a well logging tool and are capable of being calibrated downhole.

    摘要翻译: 本文所述的可变体积系统及其使用方法能够对流体性质和流体样品的相位行为进行校准测定。 可以基于一个或多个校准功能来校准测定值,例如校正压力和温度变化的系统体积。 交叉检查测量结果可用于确定校准或监视器对可变体积系统的泄漏或其他异常的准确性。 可变容积系统可以在测井工具中实现,并且能够在井下校准。

    METHODS AND APPARATUS TO DETERMINE THE COMPRESSIBILITY OF A FLUID
    13.
    发明申请
    METHODS AND APPARATUS TO DETERMINE THE COMPRESSIBILITY OF A FLUID 有权
    确定流体的可压缩性的方法和装置

    公开(公告)号:US20090308600A1

    公开(公告)日:2009-12-17

    申请号:US12137058

    申请日:2008-06-11

    IPC分类号: E21B49/08

    摘要: Example methods and apparatus to determine the compressibility of a fluid are disclosed. A disclosed example method includes capturing a fluid in a chamber, pressurizing the captured fluid to first and second pressures, measuring first and second values representative of first and second densities of the fluid while pressurized at respective ones of the first and second pressures, and computing a third value representative of a compressibility of the fluid using the first and second values.

    摘要翻译: 公开了用于确定流体的可压缩性的示例性方法和装置。 所公开的示例性方法包括捕获腔室中的流体,将捕获的流体加压到第一和第二压力,测量代表流体的第一和第二密度的第一和第二值,同时在第一和第二压力的相应压力下加压,以及计算 代表使用第一和第二值的流体的压缩性的第三值。

    Clean fluid sample for downhole measurements
    14.
    发明授权
    Clean fluid sample for downhole measurements 有权
    清洁流体样品进行井下测量

    公开(公告)号:US08434357B2

    公开(公告)日:2013-05-07

    申请号:US12543042

    申请日:2009-08-18

    IPC分类号: E21B49/10

    摘要: A system and method for obtaining a clean fluid sample for analysis in a downhole tool are provided. In one example, the method includes directing fluid from a main flowline of the downhole tool to a secondary flowline of the downhole tool. While the fluid is being directed into the secondary flowline, sensor responses corresponding to the fluid in the secondary flowline are monitored to determine when the sensor responses stabilize. The secondary flowline is isolated from the main flowline after the sensor responses have stabilized. A quality control procedure is performed on the fluid in the secondary flowline to determine whether the captured fluid is the same as the fluid in the main flowline. Additional fluid from the main flowline is allowed into the secondary flowline if the captured fluid is not the same.

    摘要翻译: 提供了一种用于在井下工具中获得用于分析的清洁流体样本的系统和方法。 在一个示例中,该方法包括将流体从井下工具的主流线引导到井下工具的次流线。 当流体被引导到二次流线中时,监测对应于次流线中的流体的传感器响应,以确定传感器响应何时稳定。 在传感器响应稳定后,二次流线与主流线隔离。 对二次流线中的流体执行质量控制程序,以确定捕获的流体是否与主流线中的流体相同。 如果捕获的流体不相同,来自主流线的附加流体被允许进入二次流线。

    FLUID DENSITY FROM DOWNHOLE OPTICAL MEASUREMENTS
    15.
    发明申请
    FLUID DENSITY FROM DOWNHOLE OPTICAL MEASUREMENTS 有权
    流体密度来自卧室光学测量

    公开(公告)号:US20110042070A1

    公开(公告)日:2011-02-24

    申请号:US12543017

    申请日:2009-08-18

    IPC分类号: E21B49/08 E21B47/00 G06F19/00

    摘要: A system and method for determining at least one fluid characteristic of a downhole fluid sample using a downhole tool are provided. In one example, the method includes performing a calibration process that correlates optical and density sensor measurements of a fluid sample in a downhole tool at a plurality of pressures. The calibration process is performed while the fluid sample is not being agitated. At least one unknown value of a density calculation is determined based on the correlated optical sensor measurements and density sensor measurements. A second optical sensor measurement of the fluid sample is obtained while the fluid sample is being agitated. A density of the fluid sample is calculated based on the second optical sensor measurement and the at least one unknown value.

    摘要翻译: 提供了一种用于使用井下工具确定井下流体样品的至少一种流体特性的系统和方法。 在一个示例中,该方法包括执行校准过程,其将多个压力下的井下工具中的流体样品的光学和密度传感器测量值相关联。 校准过程在流体样品未被搅动时进行。 基于相关的光学传感器测量和密度传感器测量确定密度计算的至少一个未知值。 在流体样品被搅动的同时获得液体样品的第二光学传感器测量。 基于第二光学传感器测量和至少一个未知值计算流体样本的密度。

    Calibration and consistency check of variable volume systems
    16.
    发明授权
    Calibration and consistency check of variable volume systems 有权
    可变体积系统的校准和一致性检查

    公开(公告)号:US09275009B2

    公开(公告)日:2016-03-01

    申请号:US13596996

    申请日:2012-08-28

    摘要: Variable volume systems and methods of use thereof described herein are capable of making calibrated determinations of fluid properties and phase behavior of a fluid sample. The determinations can be calibrated based on one or more calibration functions, such as system volume corrected for pressure and temperature variations. Cross-checking the results of measurements can be used to determine accuracy of the calibration or monitor for leaks or other anomalies of the variable volume systems. The variable volume systems can be implemented in a well logging tool and are capable of being calibrated downhole.

    摘要翻译: 本文所述的可变体积系统及其使用方法能够对流体性质和流体样品的相位行为进行校准测定。 可以基于一个或多个校准功能来校准测定值,例如校正压力和温度变化的系统体积。 交叉检查测量结果可用于确定校准或监视器对可变体积系统的泄漏或其他异常的准确性。 可变容积系统可以在测井工具中实现,并且能够在井下校准。

    Methods and apparatus to determine phase-change pressures
    17.
    发明授权
    Methods and apparatus to determine phase-change pressures 有权
    确定相变压力的方法和装置

    公开(公告)号:US08335650B2

    公开(公告)日:2012-12-18

    申请号:US12582243

    申请日:2009-10-20

    IPC分类号: G01V5/04

    摘要: Example methods and apparatus to determine phase-change pressures are disclosed. A disclosed example method includes capturing a fluid in a chamber, pressurizing the fluid at a plurality of pressures, measuring a plurality of transmittances of a signal through the fluid at respective ones of the plurality of pressures, computing a first magnitude of a first subset of the plurality of transmittances, computing a second magnitude of a second subset of the plurality of transmittances, comparing the first and second magnitudes to determine a phase-change pressure for the fluid.

    摘要翻译: 公开了用于确定相变压力的示例性方法和装置。 所公开的示例性方法包括捕获腔室中的流体,在多个压力下对流体加压,在多个压力中的相应压力下测量通过流体的信号的多个透射率,计算第一子集的第一子集 所述多个透射率,计算所述多个透射率的第二子集的第二大小,比较所述第一和第二幅度以确定所述流体的相变压力。

    Methods and apparatus to determine the compressibility of a fluid
    18.
    发明授权
    Methods and apparatus to determine the compressibility of a fluid 有权
    确定流体压缩性的方法和装置

    公开(公告)号:US07913556B2

    公开(公告)日:2011-03-29

    申请号:US12137058

    申请日:2008-06-11

    IPC分类号: E21B49/08 G01N9/00 E21B49/10

    摘要: Example methods and apparatus to determine the compressibility of a fluid are disclosed. A disclosed example method includes capturing a fluid in a chamber, pressurizing the captured fluid to first and second pressures, measuring first and second values representative of first and second densities of the fluid while pressurized at respective ones of the first and second pressures, and computing a third value representative of a compressibility of the fluid using the first and second values.

    摘要翻译: 公开了用于确定流体的可压缩性的示例性方法和装置。 所公开的示例性方法包括捕获腔室中的流体,将捕获的流体加压到第一和第二压力,测量代表流体的第一和第二密度的第一和第二值,同时在第一和第二压力的相应压力下加压,以及计算 代表使用第一和第二值的流体的压缩性的第三值。

    CLEAN FLUID SAMPLE FOR DOWNHOLE MEASUREMENTS
    19.
    发明申请
    CLEAN FLUID SAMPLE FOR DOWNHOLE MEASUREMENTS 有权
    清洁液体样品用于井下测量

    公开(公告)号:US20110042071A1

    公开(公告)日:2011-02-24

    申请号:US12543042

    申请日:2009-08-18

    IPC分类号: E21B47/00 E21B34/00

    摘要: A system and method for obtaining a clean fluid sample for analysis in a downhole tool are provided. In one example, the method includes directing fluid from a main flowline of the downhole tool to a secondary flowline of the downhole tool. While the fluid is being directed into the secondary flowline, sensor responses corresponding to the fluid in the secondary flowline are monitored to determine when the sensor responses stabilize. The secondary flowline is isolated from the main flowline after the sensor responses have stabilized. A quality control procedure is performed on the fluid in the secondary flowline to determine whether the captured fluid is the same as the fluid in the main flowline. Additional fluid from the main flowline is allowed into the secondary flowline if the captured fluid is not the same.

    摘要翻译: 提供了一种用于在井下工具中获得用于分析的清洁流体样本的系统和方法。 在一个示例中,该方法包括将流体从井下工具的主流线引导到井下工具的次流线。 当流体被引导到二次流线中时,监测对应于次流线中的流体的传感器响应,以确定传感器响应何时稳定。 在传感器响应稳定后,二次流线与主流线隔离。 对二次流线中的流体执行质量控制程序,以确定捕获的流体是否与主流线中的流体相同。 如果捕获的流体不相同,来自主流线的附加流体被允许进入二次流线。

    METHODS AND APPARATUS FOR THE DOWNHOLE CHARACTERIZATION OF FORMATION FLUIDS
    20.
    发明申请
    METHODS AND APPARATUS FOR THE DOWNHOLE CHARACTERIZATION OF FORMATION FLUIDS 有权
    用于形成流体的井下特征的方法和装置

    公开(公告)号:US20070119244A1

    公开(公告)日:2007-05-31

    申请号:US11615381

    申请日:2006-12-22

    IPC分类号: E21B49/08

    摘要: Methods and apparatus for investigating a hydrocarbon bearing geological formation traversed by a borehole are disclosed. An example method to characterize a fluid associated with an underground geological formation obtains a sample of the fluid associated with the underground geological formation. The example method measures, in a borehole associated with the underground geological formation, a chemical composition and a thermophysical property of the sample of the fluid. The example method selects a mathematical model to represent the sample of the fluid based on at least one of the chemical composition or the thermophysical property and adjusts a parameter of the mathematical model based on at least one of the chemical composition or the thermophysical property to generate an adjusted mathematical model. The example method then determines a property of the fluid associated with the underground geological formation based on the adjusted mathematical model.

    摘要翻译: 公开了用于研究由钻孔穿过的含烃地质地层的方法和装置。 用于表征与地下地质构造有关的流体的示例性方法获得与地下地质构造相关联的流体的样本。 示例性方法在与地下地质构造相关的钻孔中测量流体样品的化学成分和热物理性质。 该示例性方法基于化学组成或热物理性质中的至少一个选择数学模型来表示流体的样本,并且基于化学组成或热物理性质中的至少一个来调整数学模型的参数以产生 一个调整后的数学模型。 然后,示例性方法基于经调整的数学模型确定与地下地质构造相关联的流体的性质。