PRESSURE-CORRECTED DENSITY OF A FLUID
    1.
    发明申请
    PRESSURE-CORRECTED DENSITY OF A FLUID 审中-公开
    流体的压力校正密度

    公开(公告)号:US20130239671A1

    公开(公告)日:2013-09-19

    申请号:US13420929

    申请日:2012-03-15

    IPC分类号: E21B49/00

    CPC分类号: E21B49/08 E21B47/10 E21B49/10

    摘要: This disclosure is drawn to methods, systems, devices and/or apparatus related to determining the density of a fluid. Specifically, the disclosed methods, systems, devices and/or apparatus relate to determining the density of a fluid in situ (e.g., in a downhole tool) under the Earth's surface using extrapolation and/or interpolation technique(s). Some example methods may include obtaining a fluid sample from a formation, measuring, in a downhole tool, a plurality of density values of the fluid sample, each density value being measured at a distinct pressure level within a pressure range, and extrapolating and/or interpolating the plurality of density values of the fluid sample to a pressure level different that the distinct pressure in which the density value is measured. Some example methods may include tuning one or more Equation-of-State model based, at least in part, on the density values.

    摘要翻译: 本公开涉及与确定流体密度相关的方法,系统,装置和/或装置。 具体地,所公开的方法,系统,装置和/或装置涉及使用外插和/或内插技术来确定地球表面下的原位流体的密度(例如,在井下工具中)。 一些示例性方法可以包括从地层获得流体样品,在井下工具中测量流体样品的多个密度值,每个密度值在压力范围内在不同的压力水平下测量,并且外推和/或 将流体样本的多个密度值内插到与测量密度值的不同压力不同的压力水平。 一些示例性方法可以包括至少部分地基于密度值调整一个或多个状态方程模型。

    Methods and apparatus to detect contaminants on a fluid sensor
    6.
    发明授权
    Methods and apparatus to detect contaminants on a fluid sensor 有权
    检测流体传感器污染物的方法和设备

    公开(公告)号:US08717549B2

    公开(公告)日:2014-05-06

    申请号:US12133787

    申请日:2008-06-05

    IPC分类号: G01N21/00

    摘要: Methods and apparatus for detecting a coating on a downhole fluid sensor are disclosed. A coating may refer to a solid or liquid film on a sensor interface with the sampled fluid, caused by contaminants. Detecting a coating may be accomplished by determining a sampled fluid type and measuring at least one fluid parameter using one or more downhole fluid sensors. The coating detection further includes determining whether the measured parameters are within ranges corresponding to the determined fluid type. Additionally or alternatively, measured parameter values that remain substantially stable during sampled fluid pumping may also indicate a coated sensor.

    摘要翻译: 公开了用于检测井下流体传感器上的涂层的方法和装置。 涂层可以指由与污染物引起的采样流体的传感器界面上的固体或液体膜。 可以通过确定采样的流体类型并使用一个或多个井下流体传感器测量至少一个流体参数来实现检测涂层。 涂层检测还包括确定所测量的参数是否在与所确定的流体类型相对应的范围内。 另外或替代地,在采样流体泵送期间保持基本稳定的测量参数值也可以指示涂覆的传感器。

    THICKNESS-INDEPENDENT COMPUTATION OF HORIZONTAL AND VERTICAL PERMEABILITY
    7.
    发明申请
    THICKNESS-INDEPENDENT COMPUTATION OF HORIZONTAL AND VERTICAL PERMEABILITY 有权
    厚度独立计算水平和垂直渗透率

    公开(公告)号:US20100274490A1

    公开(公告)日:2010-10-28

    申请号:US12758398

    申请日:2010-04-12

    IPC分类号: E21B49/00

    CPC分类号: E21B49/008

    摘要: A method for determining permeability of a reservoir using a packer-probe formation testing tool. The elements of the method include generating, using a dual packer tool module, fluid flows from the reservoir into a wellbore, obtaining pressure data associated with the fluid flows using an observation probe tool module, wherein the packer-probe formation testing tool comprises the dual packer module and the observation probe tool module, identifying a portion of the pressure data corresponding to a spherical flow regime, determining horizontal permeability based on the portion of the pressure data, and displaying an output generated using the horizontal permeability.

    摘要翻译: 一种使用封隔器探针形成测试工具确定储层的渗透性的方法。 该方法的要素包括使用双封隔器工具模块来产生从贮存器进入井眼的流体流,使用观察探针工具模块获得与流体流动相关联的压力数据,其中封隔器探针形成测试工具包括双重封闭器 封隔器模块和观察探针工具模块,识别对应于球形流动状态的压力数据的一部分,基于压力数据的部分确定水平磁导率,以及显示使用水平磁导率产生的输出。

    PHASE SEPARATION DETECTION IN DOWNHOLE FLUID SAMPLING
    8.
    发明申请
    PHASE SEPARATION DETECTION IN DOWNHOLE FLUID SAMPLING 有权
    井下液体采样中的相分离检测

    公开(公告)号:US20100192684A1

    公开(公告)日:2010-08-05

    申请号:US12363835

    申请日:2009-02-02

    IPC分类号: E21B49/08

    CPC分类号: E21B49/082

    摘要: Example methods and apparatus to detect phase separation in downhole fluid sampling operations are disclosed. An example method to detect a phase separation condition of a fluid from a subterranean involves obtaining a sample of the fluid, measuring a first characteristic value of the sample, measuring a second characteristic value of the sample and comparing the first characteristic value to a first reference value associated with a single-phase condition of the fluid to generate a corresponding first comparison result. The example method then compares the second characteristic value to a second reference value associated with the single-phase condition of the fluid to generate a corresponding second comparison result and detects the phase separation condition of the fluid based on the first and second comparison results.

    摘要翻译: 公开了用于检测井下液体取样操作中的相分离的示例性方法和装置。 用于检测来自地下的流体的相分离条件的示例性方法包括获得流体样品,测量样品的第一特征值,测量样品的第二特征值,并将第一特征值与第一参考值进行比较 值与流体的单相条件相关联以产生相应的第一比较结果。 该示例方法然后将第二特征值与与流体的单相条件相关联的第二参考值进行比较,以产生相应的第二比较结果,并基于第一和第二比较结果检测流体的相分离条件。

    METHODS AND APPARATUS TO SAMPLE HEAVY OIL FROM A SUBTERANEAN FORMATION
    9.
    发明申请
    METHODS AND APPARATUS TO SAMPLE HEAVY OIL FROM A SUBTERANEAN FORMATION 有权
    方法和装置,用于从亚种形成中测量重油

    公开(公告)号:US20100186948A1

    公开(公告)日:2010-07-29

    申请号:US12754334

    申请日:2010-04-05

    IPC分类号: E21B47/00

    CPC分类号: E21B49/081 E21B43/24

    摘要: A method of sampling fluid from a subterranean formation includes positioning a first tool having a heater in a borehole so that the heater is adjacent a portion of the subterranean formation; heating with the heater the portion of the subterranean formation; removing the first tool from the borehole; orienting a second tool having a sampling probe in the borehole so that the sampling probe is to contact a portion of the subterranean formation heated by the heater; and obtaining via the sampling probe a fluid sample from the portion of the subterranean formation heated by the heater.

    摘要翻译: 从地下地层采样流体的方法包括将具有加热器的第一工具定位在钻孔中,使得加热器邻近地层的一部分; 用加热器加热地层的一部分; 从钻孔中移除第一个工具; 将具有采样探针的第二工具定向在钻孔中,使得采样探针接触由加热器加热的地下地层的一部分; 以及通过所述采样探针从所述加热器加热的所述地下部分的部分获得流体样品。

    Apparatus and methods to remove impurities at a sensor in a downhole tool
    10.
    发明授权
    Apparatus and methods to remove impurities at a sensor in a downhole tool 有权
    在井下工具中去除传感器的杂质的装置和方法

    公开(公告)号:US07677307B2

    公开(公告)日:2010-03-16

    申请号:US11757476

    申请日:2007-06-04

    IPC分类号: E21B21/00

    CPC分类号: E21B49/08 E21B37/00

    摘要: Apparatus and methods to remove impurities at a sensor in a downhole tool are disclosed. During the testing and/or sampling of formation fluid in a borehole, the downhole tool creates a transient high rate of fluid flow of the formation fluid to remove impurities at the sensor.

    摘要翻译: 公开了在井下工具中的传感器处去除杂质的装置和方法。 在钻孔中地层流体的测试和/或采样期间,井下工具产生地层流体的瞬时高速流体流动以去除传感器处的杂质。