Spontaneous potential measurement apparatus connected between metallic
housings of a wellbore apparatus for measuring the spontaneous
potential of an earth formation
    1.
    发明授权
    Spontaneous potential measurement apparatus connected between metallic housings of a wellbore apparatus for measuring the spontaneous potential of an earth formation 失效
    连接在用于测量地层的自发电位的井筒装置的金属壳体之间的自发电位测量装置

    公开(公告)号:US5402069A

    公开(公告)日:1995-03-28

    申请号:US80428

    申请日:1993-06-18

    IPC分类号: G01V3/26 G01V3/18 G01V3/20

    CPC分类号: G01V3/265

    摘要: A spontaneous potential (SP) sub is interconnected between two metallic housings of a wellbore apparatus and is lowered into a wellbore. A spontaneous potential (SP) of an earth formation trasversed by the wellbore is measured by the SP sub, and a log is generated from the sub which is representative of the spontaneous potential of the formation, the log being substantially free of a special type of distortion which typified the prior art SP measurements taken by prior art SP measurement apparatus. The SP sub includes a measurement electrode, monitoring electrodes placed on both sides of the measurement electrode, a bucking electrode placed on both sides of the monitoring electrodes, current driving circuitry connected to the bucking electrodes, and receiving circuitry connected to the monitoring electrodes. The current driving circuitry delivers a current of sufficient magnitude to each bucking electrode such that the voltage potential between the monitoring electrodes is approximately equal to zero. The current from each bucking electrode is grounded via its own respective metallic housing and not via a surface oriented electrode. The receiving circuitry monitors the voltage between each of the monitoring electrodes and looks for a zero potential difference between the monitoring electrodes. When the receiving circuitry locates the zero potential difference at a moment in time between its monitoring electrodes, the measurement of the spontaneous potential taken by the measurement electrode at that same precise moment in time is received and recorded. A plurality of such measurements made by the measurement electrode represents a log of spontaneous potential of the earth formation traversed by the wellbore which is substantially free of the distortion which typified the prior art SP log measurements.

    摘要翻译: 自发电位(SP)sub在井筒装置的两个金属壳体之间互连,并被下降到井筒中。 通过SP sub测量由井筒对置的地层的自发电位(SP),并且从代表地层的自发电位的sub产生对数,对数基本上不含特殊类型 失真表示现有技术的SP测量装置所采用的现有技术SP测量。 SP sub包括测量电极,设置在测量电极两侧的监视电极,设置在监视电极两侧的降压电极,连接到降压电极的电流驱动电路和连接到监视电极的接收电路。 电流驱动电路向每个降压电极传送足够大的电流,使得监视电极之间的电压电位近似等于零。 来自每个降压电极的电流通过其各自的金属外壳而不经由表面取向的电极接地。 接收电路监视每个监测电极之间的电压,并寻找监测电极之间的零电位差。 当接收电路在其监测电极之间的时间点定位零电位差时,接收并记录测量电极在同一精确时刻所采取的自发电位的测量。 由测量电极进行的多次这样的测量表示由井筒穿过的地层的自发电位的对数,其基本上没有以现有技术的SP测量值为代表的失真。

    System and Method for Deep Formation Evaluation
    2.
    发明申请
    System and Method for Deep Formation Evaluation 审中-公开
    深层形成评估系统与方法

    公开(公告)号:US20090271117A1

    公开(公告)日:2009-10-29

    申请号:US12427818

    申请日:2009-04-22

    IPC分类号: G01V9/00

    摘要: A technique facilitates formation evaluation by deploying tools in a subterranean environment. A logging tool is deployed in a wellbore to obtain formation related measurements. Additionally, one or more mobile robots also are positioned in the subterranean environment at unique positions that facilitate accumulation of data related to the formation. The data obtained from the logging tool and the one or more mobile robots is processed in a manner that enables deep formation evaluation.

    摘要翻译: 一种技术通过在地下环境中部署工具来促进地层评估。 将测井工具部署在井眼中以获得与地层有关的测量。 另外,一个或多个移动机器人也被定位在地下环境中的独特位置,便于与地层相关的数据的积累。 从测井工具和一个或多个移动机器人获得的数据以能够进行深层评估的方式进行处理。

    Methods and apparatus to sample heavy oil in a subterranean formation
    3.
    发明授权
    Methods and apparatus to sample heavy oil in a subterranean formation 有权
    用于在地层中采样重油的方法和设备

    公开(公告)号:US08496054B2

    公开(公告)日:2013-07-30

    申请号:US11962857

    申请日:2007-12-21

    IPC分类号: E21B49/10

    摘要: A method for sampling fluid in a subterranean formation includes, reducing a viscosity of a fluid, pressurizing a portion of the subterranean formation and collecting a fluid sample. Specifically, a viscosity of a fluid in a portion of the subterranean formation is reduced and a portion of the subterranean formation is pressurizing by injecting a displacement fluid into the subterranean formation. A sample of the fluid pressurized by the displacement fluid is then collected.

    摘要翻译: 用于对地下地层中的流体进行采样的方法包括:降低流体的粘度,加压地下地层的一部分并收集流体样品。 具体地说,通过将位移流体注入到地下地层中,地层的一部分中的流体的粘度降低,地层的一部分被加压。 然后收集由置换液体加压的流体样品。

    Downhole measurement of formation characteristics while drilling
    6.
    发明授权
    Downhole measurement of formation characteristics while drilling 有权
    钻井时地层特征的井下测量

    公开(公告)号:US07458257B2

    公开(公告)日:2008-12-02

    申请号:US11312683

    申请日:2005-12-19

    IPC分类号: E21B47/00

    CPC分类号: E21B49/005 E21B49/081

    摘要: A method for determining a property of formations surrounding an earth borehole being drilled with a drill bit at the end of a drill string, using drilling fluid that flows downward through the drill string, exits through the drill bit, and returns toward the earth's surface in the annulus between the drill string and the periphery of the borehole, including the following steps: obtaining, downhole near the drill bit, a pre-bit sample of the mud in the drill string as it approaches the drill bit; obtaining, downhole near the drill bit, a post-bit sample of the mud in the annulus, entrained with drilled earth formation, after its egression from the drill bit; implementing pre-bit measurements on the pre-bit sample; implementing post-bit measurements on the post-bit sample; and determining a property of the formations from the post-bit measurements and the pre-bit measurements.

    摘要翻译: 一种用于确定围绕钻井的地层钻孔的性质的方法,其使用在钻柱上向下流动的钻井流体在钻柱的端部钻出,通过钻头离开,并朝向地球表面返回 钻柱和钻孔周边之间的环形空间,包括以下步骤:在钻柱附近获得钻头附近的井下钻头样品,当钻柱接近钻头时; 在钻头附近获得钻孔附近的井下钻孔后的钻头样品,在钻头从其钻出之后夹带钻井泥土; 对前置位采样执行预位测量; 对后位采样进行后位测量; 以及从后位测量和前位测量确定地层的属性。

    Subsurface monitoring and borehole placement using a modified tubular equipped with tilted or transverse magnetic dipoles
    7.
    发明授权
    Subsurface monitoring and borehole placement using a modified tubular equipped with tilted or transverse magnetic dipoles 有权
    使用配备有倾斜或横向磁偶极子的改进管道进行地下监测和钻孔放置

    公开(公告)号:US06727705B2

    公开(公告)日:2004-04-27

    申请号:US10029755

    申请日:2001-12-18

    IPC分类号: G01V308

    摘要: Systems and methods for monitoring a subsurface formation property and for placing a borehole in the vicinity of a well in the formation. A slotted tubular is utilized to provide through-tubular signal transmission and/or reception using an antenna adapted to generate a magnetic dipole moment with a transverse or controllable orientation. Hydraulic isolation between the interior and exterior of the tubular at the slot is provided by a pressure barrier. The tubular also forms part of a system for accurately placing a well within a desired distance and orientation relative to an existing well.

    摘要翻译: 用于监测地下形成特性并将钻孔置于地层中的井附近的系统和方法。 开槽管被用于通过适于产生具有横向或可控取向的磁偶极矩的天线来提供贯穿管状的信号传输和/或接收。 在管槽的内部和外部之间的液压隔离通过压力屏障提供。 管状物还构成了一系统的一部分,该系统用于相对于现存的井精确地将井放置在期望的距离和取向范围内。

    System and method for displaying data associated with subsurface reservoirs
    8.
    发明授权
    System and method for displaying data associated with subsurface reservoirs 有权
    用于显示与地下水库相关的数据的系统和方法

    公开(公告)号:US08364404B2

    公开(公告)日:2013-01-29

    申请号:US12027155

    申请日:2008-02-06

    CPC分类号: G01V1/50 G01V3/18 G01V3/38

    摘要: Method and system for visualizing one or more properties of a subterranean earth formation while drilling a borehole using probability information from a modeling process. Probability waveforms based on information from a plurality of borehole stations may be plotted, either alone or superimposed onto other graphical representations, to provide a visual display that is easily interpreted by a user to make geosteering decisions. The probability waveforms include peaked sections that are proportional to the amount of uncertainty or error associated with a boundary estimate at a particular distance from an axis of the borehole. By providing a visual display of the uncertainty, a user can make better geosteering decisions.

    摘要翻译: 使用来自建模过程的概率信息钻孔时可视化地下地层的一个或多个属性的方法和系统。 基于来自多个井眼站的信息的概率波形可以单独绘制或叠加到其他图形表示上,以提供易于由用户解释以进行地理转向决定的视觉显示。 概率波形包括与距离钻孔的特定距离处的边界估计相关联的不确定度或误差量成比例的峰值段。 通过提供不确定性的视觉显示,用户可以做出更好的地理转向决策。

    Wellbore drilling method
    9.
    发明授权
    Wellbore drilling method 有权
    井眼钻孔法

    公开(公告)号:US07832500B2

    公开(公告)日:2010-11-16

    申请号:US10708406

    申请日:2004-03-01

    IPC分类号: E21B44/00

    CPC分类号: E21B47/12 E21B44/00

    摘要: A method and apparatus for drilling at least one wellbore from an offsite location is provided. Each wellbore is located at a wellsite having a drilling rig with a downhole drilling tool suspended therefrom. The downhole drilling tool is selectively advanced into the earth to form the wellbore. The downhole drilling tool is operated according to a wellsite setup. Wellsite parameters are collected from a plurality of sensors positioned about the wellsite. The wellsite parameters are transmitted to an offsite control center. The offsite control center performs an analysis of the wellsite parameters and automatically adjusts the wellsite setup from the offsite control center based on the analysis.

    摘要翻译: 提供了用于从异地位置钻探至少一个井眼的方法和装置。 每个井眼位于具有钻井钻井平台的井场,井下钻井工具悬挂在钻井平台上。 井下钻井工具选择性地进入地球以形成井筒。 井下钻孔工具根据井场设置进行操作。 从围绕井场定位的多个传感器收集井场参数。 井场参数被传送到非现场控制中心。 异地控制中心对井场参数进行分析,并根据分析自动从异地控制中心调整井场设置。

    Apparatus for electromagnetic logging of a formation
    10.
    发明授权
    Apparatus for electromagnetic logging of a formation 有权
    用于电磁测井的装置

    公开(公告)号:US07348781B2

    公开(公告)日:2008-03-25

    申请号:US11030670

    申请日:2004-12-31

    IPC分类号: G01V3/00 G01V3/18

    CPC分类号: G01V3/30

    摘要: A tool for electromagnetic logging of a formation includes a tool body configured to move in a borehole penetrating the formation; an antenna array disposed on the tool body; and an electronic unit configured to control operation of the antenna array, wherein the antenna array comprises at least one transmitter and at least one receiver, wherein at least one selected from the group consisting of the at least one transmitter and the at least one receiver comprises a printed circuit antenna.

    摘要翻译: 用于地层的电磁测井的工具包括构造成在穿过地层的钻孔中移动的工具主体; 设置在所述工具主体上的天线阵列; 以及电子单元,被配置为控制所述天线阵列的操作,其中所述天线阵列包括至少一个发射机和至少一个接收机,其中从由所述至少一个发射机和所述至少一个接收机组成的组中选择的组中的至少一个包括 印刷电路天线。