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    • 11. 发明授权
    • Method and apparatus for formation testing
    • 地层测试方法和装置
    • US07996153B2
    • 2011-08-09
    • US12134650
    • 2008-06-06
    • Eick NiemeyerTobias KischkatMatthias Meister
    • Eick NiemeyerTobias KischkatMatthias Meister
    • G01V3/38G01B5/28
    • E21B49/008E21B49/10G01V11/00
    • A method includes calculating a correction factor that uses a tool component volume change model to estimate a system volume change resulting from a change in the tool component. An apparatus includes a carrier conveyable into a well borehole, a formation test tool coupled to the carrier, the formation test tool including a tool component. A measurement device to estimate a change in the tool component during operation, and a compensator uses an estimated system volume change resulting at least in part from the change in the tool component during a downhole operation, the compensator compensating for the system volume change and wherein the estimated system volume change is estimated at least in part using a volume change model.
    • 一种方法包括计算使用工具组件卷改变模型来估计由刀具部件的变化导致的系统体积变化的校正因子。 一种装置包括可输送到井眼中的载体,联接到载体的地层测试工具,地层测试工具包括工具部件。 一种用于估计操作期间刀具部件的变化的测量装置,并且补偿器使用估计的系统体积变化,至少部分地由于在井下操作期间刀具部件的变化,补偿器补偿系统体积变化,并且其中 估计系统体积变化至少部分地使用体积变化模型估计。
    • 12. 发明授权
    • Methods to detect formation pressure
    • 检测地层压力的方法
    • US07266983B2
    • 2007-09-11
    • US11195310
    • 2005-08-02
    • Sven KruegerEick NiemeyerMatthias MeisterJaedong Lee
    • Sven KruegerEick NiemeyerMatthias MeisterJaedong Lee
    • E21B21/08
    • E21B49/008E21B49/08E21B49/081E21B49/10
    • A method of determining a formation pressure during drawdown of a formation comprises sampling fluid from a formation using a downhole tool. A fluid sample pressure is determined at two different times during the drawdown. The fluid sample pressures are analyzed using a higher-order pressure derivative with respect to time technique to determine the formation pressure during the drawdown. Another method of determining a formation pressure during drawdown of a formation comprises sampling fluid from a formation using a downhole tool. A fluid sample pressure is determined at two different times during the drawdown. The fluid sample pressures are analyzed using at least two analysis techniques to each determine an estimate of the formation pressure during the drawdown.
    • 确定地层压降期间的地层压力的方法包括使用井下工具从地层采集流体。 流体样品压力在下降期间在两个不同时间确定。 使用相对于时间技术的高阶压力导数来分析流体样本压力,以确定在下降期间的地层压力。 确定地层压降期间的地层压力的另一种方法包括使用井下工具从地层采集流体。 流体样品压力在下降期间在两个不同时间确定。 使用至少两种分析技术来分析流体样品压力,以分别确定在压降期间地层压力的估计。