Methods for using a formation tester
    1.
    发明申请
    Methods for using a formation tester 有权
    使用地层测试仪的方法

    公开(公告)号:US20050268709A1

    公开(公告)日:2005-12-08

    申请号:US11132475

    申请日:2005-05-19

    IPC分类号: E21B49/00 E21B49/10

    摘要: A method of testing a downhole formation using a formation tester on a drill string. The formation tester is disposed downhole on a drill string and a formation test is performed by forming a seal between a formation probe assembly and the formation. A drawdown piston then creates a volume within a cylinder to draw formation fluid into the volume through the probe assembly. The pressure of the fluid within the cylinder is monitored. The formation test procedure may then be adjusted. The test procedure may be adjusted to account for the bubble point pressure of the fluid being monitored. The pressure may monitored to verify a proper seal is formed or is being maintained. The test procedure may also be performed by maintaining a substantially constant drawdown rate using a hydraulic threshold or a variable restrictor.

    摘要翻译: 使用地层测试仪在钻柱上测试井下地层的方法。 地层测试仪设在钻柱井下,通过在地层探测器组件和地层之间形成密封来进行地层试验。 然后,下降活塞在气缸内产生体积,以将地层流体通过探针组件吸入体积。 监测气缸内液体的压力。 然后可以调整地层测试程序。 可以调整测试程序以考虑被监测流体的泡点压力。 可以监测压力以验证形成或正在保持适当的密封。 也可以通过使用液压阈值或可变节流器维持基本上恒定的抽出率来执行测试程序。

    Methods and apparatus for measuring formation properties
    3.
    发明申请
    Methods and apparatus for measuring formation properties 审中-公开
    测量地层特性的方法和装置

    公开(公告)号:US20050257611A1

    公开(公告)日:2005-11-24

    申请号:US11135050

    申请日:2005-05-23

    IPC分类号: E21B47/06 E21B49/10

    CPC分类号: E21B49/10

    摘要: This application relates to various methods and apparatus for rapidly obtaining accurate formation property data from a drilled earthen borehole. Quickly obtaining accurate formation property data, including formation fluid pressure, is vital to beneficially describing the various formations being intersected. For example, methods are disclosed for collecting numerous property values with a minimum of downhole tools, correcting and calibrating downhole measurements and sensors, and developing complete formation predictors and models by acquiring a diverse set of direct formation measurements, such as formation fluid pressure and temperature. Also disclosed are various methods of using of accurately and quickly obtained formation property data.

    摘要翻译: 本申请涉及用于从钻井的井眼快速获得准确的地层数据的各种方法和装置。 快速获得准确的地层数据,包括地层流体压力,对于有效描述相互不同的地层是至关重要的。 例如,公开了用于利用最少的井下工具来收集许多属性值的方法,校正和校准井下测量和传感器,以及通过获取多种直接地层测量(例如地层流体压力和温度)来形成完整地层预测器和模型 。 还公开了使用准确且快速获得的地层数据的各种方法。

    Methods for measuring a formation supercharge pressure
    4.
    发明申请
    Methods for measuring a formation supercharge pressure 有权
    测量地层增压压力的方法

    公开(公告)号:US20050235745A1

    公开(公告)日:2005-10-27

    申请号:US11069649

    申请日:2005-03-01

    IPC分类号: E21B21/08 E21B49/08 E21B49/10

    摘要: A method of determining the supercharge pressure in a formation intersected by a borehole having a wall, the method comprising disposing a formation pressure test tool into the borehole having a probe for isolating a portion of the borehole. The method further comprises extending the probe into sealing contact with the borehole wall. The method further comprises performing at least one drawdown test with the formation pressure test tool. The method further comprises modeling the supercharge pressure of the formation using the dynamic properties of the mudcake. The method further comprises determining the supercharge pressure of the formation using the supercharge pressure model. The formation pressure test tool may be conveyed into the borehole using wireline technology or on a drill string. Using the supercharge pressure, the drawdown test may be optimized, the characteristics of the drilling fluid altered, or the measurements of other sensors adjusted.

    摘要翻译: 一种确定由具有壁的钻孔相交的地层中的增压压力的方法,所述方法包括将地层压力测试工具设置在所述钻孔中,所述钻孔具有用于隔离所述钻孔的一部分的探针。 该方法还包括将探针延伸成与钻孔壁密封接触。 该方法还包括使用地层压力测试工具进行至少一次牵伸试验。 该方法还包括使用泥饼的动态特性对地层的增压压力进行建模。 该方法还包括使用增压压力模型确定地层的增压压力。 地层压力测试工具可以使用有线技术或钻柱传送到钻孔中。 使用增压压力,可以优化压下试验,改变钻井液的特性,或调整其他传感器的测量值。

    System and methods for upscaling petrophysical data
    5.
    发明申请
    System and methods for upscaling petrophysical data 有权
    用于放大岩石物理数据的系统和方法

    公开(公告)号:US20050116709A1

    公开(公告)日:2005-06-02

    申请号:US10957402

    申请日:2004-10-01

    CPC分类号: G01V3/32 G01N24/081

    摘要: System and methods for estimating properties of a geologic formation are disclosed. A preferred embodiment includes a method for estimating properties of a geologic formation, comprising the steps of: measuring a property of the formation in two or more directions along a path in the formation; obtaining directional property values for at least one spatial unit along the path in the formation based on the property measurements; and providing an anisotropy estimate of the formation from the obtained directional property values.

    摘要翻译: 公开了用于估计地质构造特性的系统和方法。 一个优选的实施例包括一种用于估计地质构造的性质的方法,包括以下步骤:沿地层中的路径沿两个或更多个方向测量地层的性质; 基于属性测量获得沿着地层中的路径的至少一个空间单元的定向属性值; 并从所获得的方向特征值提供地层的各向异性估计。