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    • 1. 发明申请
    • METHOD AND APPARATUS FOR FORMATION TESTING
    • 用于形成测试的方法和装置
    • US20080234938A1
    • 2008-09-25
    • US12134650
    • 2008-06-06
    • Eick NiemeyerTobias KischkatMatthias Meister
    • Eick NiemeyerTobias KischkatMatthias Meister
    • G01V3/38
    • 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。
    • 3. 发明授权
    • Formation testing apparatus and method for optimizing draw down
    • 地层试验装置及优化方法
    • US07011155B2
    • 2006-03-14
    • US10423420
    • 2003-04-25
    • Matthias MeisterJaedong LeeSven KruegerEick Niemeyer
    • Matthias MeisterJaedong LeeSven KruegerEick Niemeyer
    • E21B49/00E21B47/10
    • E21B49/008E21B49/08E21B49/087
    • A method and apparatus for of determining a formation parameter of interest. The method includes placing a tool into communication with the formation to test the formation, determining a first formation characteristic during a first test portion, initiating a second test portion, the second test portion having test parameters determined at least in part by the determinations made during the first test portion, determining a second formation characteristic during the second test portion, and determining the formation parameter from one of the first formation characteristic and the second formation characteristic. The apparatus includes a draw down unit and a control system for closed loop control of the draw down unit. A microprocessor in the control system processes signals from a sensor in the draw down unit to determine formation characteristics and to determine test parameters for subsequent test portions.
    • 一种用于确定感兴趣的地层参数的方法和装置。 该方法包括将工具与地层连通以测试地层,确定第一测试部分期间的第一地层特征,启动第二测试部分,第二测试部分具有至少部分地通过在 第一测试部分,确定第二测试部分期间的第二形成特征,以及根据第一形成特征和第二形成特征中的一个确定形成参数。 该设备包括一个牵引单元和一个用于闭合控制牵引单元的控制系统。 控制系统中的微处理器处理来自牵引单元中的传感器的信号以确定形成特征并确定后续测试部分的测试参数。
    • 7. 发明申请
    • Methods to detect formation pressure
    • 检测地层压力的方法
    • US20060016594A1
    • 2006-01-26
    • US11195310
    • 2005-08-02
    • Sven KruegerEick NiemeyerMatthias MeisterJaedong Lee
    • Sven KruegerEick NiemeyerMatthias MeisterJaedong Lee
    • E21B47/00
    • 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。
    • 8. 发明授权
    • Methods to detect formation pressure
    • 检测地层压力的方法
    • US06923052B2
    • 2005-08-02
    • US10242184
    • 2002-09-12
    • Sven KruegerEick NiemeyerMatthias MeisterJaedong Lee
    • Sven KruegerEick NiemeyerMatthias MeisterJaedong Lee
    • E21B49/00E21B49/10E21B21/08E21B47/06E21B47/10E21B49/08
    • E21B49/10E21B49/008
    • Methods for estimating formation pressure from data taken during the drawdown cycle are presented. In one aspect, a method of determining a formation pressure during drawdown of a formation comprises sampling fluid from a formation using a downhole tool having a sample volume and a fluid sampling device. At least one time dependent parameter of interest related to the fluid is determined during the drawdown. The at least one time dependent parameter is analyzed using a plurality of calculation techniques to determine the formation pressure. The techniques include (i) a first pressure derivative technique; (ii) a second pressure derivative technique; (iii) a formation rate analysis technique; (iv) a dp/dt-ratio technique; and (v) a stepwise drawdown technique.
    • 提出了在降压循环期间从数据中估算地层压力的方法。 在一个方面,确定地层压降期间的地层压力的方法包括使用具有样品体积的井下工具和流体取样装置从地层采集流体。 在抽出期间确定与流体相关的至少一个与时间相关的参数。 使用多个计算技术来分析至少一个时间依赖参数以确定地层压力。 这些技术包括(i)第一压力衍生技术; (ii)第二压力衍生技术; (iii)形成速率分析技术; (iv)dp / dt比技术; 和(v)逐步缩小技术。