SYSTEMS AND METHODS FOR DOWNHOLE MAGNETIC FIELD MEASUREMENT
    82.
    发明申请
    SYSTEMS AND METHODS FOR DOWNHOLE MAGNETIC FIELD MEASUREMENT 审中-公开
    用于井下磁场测量的系统和方法

    公开(公告)号:WO2014200574A1

    公开(公告)日:2014-12-18

    申请号:PCT/US2014/014885

    申请日:2014-02-05

    CPC classification number: G01V3/28 E21B47/123 G01R33/032 G01V3/26 G01V11/00

    Abstract: Sensors, systems and methods for downhole electromagnetic field detection, including a downhole micro-opto-electro-mechanical system (MOEMS) electromagnetic field sensor that includes a first surface that is at least partially reflective, a second surface that is at least partially reflective and suspended by one or more flexible members to define an optical cavity having a variable distance between the first and second surfaces, and a magnetically polarized layer attached to the second surface. A magnetic field passing through the optical cavity interacts with the magnetically polarized layer and a gradient in the magnetic field produces a displacement of the second surface that alters the variable distance and causes a spectrum variation in light exiting the sensor.

    Abstract translation: 用于井下电磁场检测的传感器,系统和方法,包括井下微光机电系统(MOEMS)电磁场传感器,其包括至少部分反射的第一表面,至少部分反射的第二表面, 由一个或多个柔性构件悬挂以限定在第一和第二表面之间具有可变距离的光学腔,以及附着到第二表面的磁极化层。 穿过光腔的磁场与磁极化层相互作用,并且磁场中的梯度产生改变可变距离的第二表面的位移并导致离开传感器的光的光谱变化。

    SYSTEMS AND METHODS FOR DOWNHOLE ELECTROMAGNETIC FIELD MEASUREMENT
    83.
    发明申请
    SYSTEMS AND METHODS FOR DOWNHOLE ELECTROMAGNETIC FIELD MEASUREMENT 审中-公开
    用于井下电磁场测量的系统和方法

    公开(公告)号:WO2014200572A1

    公开(公告)日:2014-12-18

    申请号:PCT/US2014/014882

    申请日:2014-02-05

    CPC classification number: G01V3/26 E21B47/123 G01R29/0885 G01V3/18 G02B26/001

    Abstract: Sensors, systems and methods for downhole electromagnetic field measurement, including a downhole micro-opto-electro-mechanical system (MOEMS) electromagnetic field sensor that includes a first surface that is at least partially reflective, a second surface that is at least partially reflective and suspended by one or more flexible members to define an optical cavity having a variable distance between the first and second surfaces, a first conductive layer attached to the first surface, and a second conductive layer attached to the second surface. The first and second conductive layers have an electrical potential proportional to an electromagnetic field within a formation surrounding the sensor. The electrical potential produces an electric field that displaces the second surface to alter the variable distance and cause a spectrum variation in light exiting the sensor.

    Abstract translation: 用于井下电磁场测量的传感器,系统和方法,包括井下微光机电系统(MOEMS)电磁场传感器,其包括至少部分反射的第一表面,至少部分反射的第二表面, 由一个或多个柔性构件悬挂以限定在第一和第二表面之间具有可变距离的光学腔,附接到第一表面的第一导电层和附着到第二表面的第二导电层。 第一和第二导电层具有与围绕传感器的地层内的电磁场成比例的电势。 电位产生电场,使第二表面移位以改变可变距离,并引起离开传感器的光的光谱变化。

    METHOD AND SYSTEM FOR MONITORING SUBSURFACE INJECTION PROCESSES USING A BOREHOLE ELECTROMAGNETIC SOURCE
    84.
    发明申请
    METHOD AND SYSTEM FOR MONITORING SUBSURFACE INJECTION PROCESSES USING A BOREHOLE ELECTROMAGNETIC SOURCE 审中-公开
    使用井下电磁源监测表面注入工艺的方法和系统

    公开(公告)号:WO2014149613A1

    公开(公告)日:2014-09-25

    申请号:PCT/US2014/019873

    申请日:2014-03-03

    CPC classification number: G01V3/26 E21B17/003 E21B47/00

    Abstract: A method and a system for providing electromagnetic measurement in a rock formation are provided. The system includes a borehole casing (50B) having a plurality of casing segments (52B). At least two casing segments (53B) of the plurality of casing segments are electrically isolated from each other. The system further includes an electromagnetic source (71A-C) positioned on a surface of the earth. The electromagnetic source is connected to the at least two casing segments. The electromagnetic source is configured to energize the at least two casing segments so as to generate an electromagnetic field in the rock formation around the borehole casing.

    Abstract translation: 提供了一种用于在岩层中提供电磁测量的方法和系统。 该系统包括具有多个壳体段(52B)的钻孔壳体(50B)。 多个套管段中的至少两个套管段(53B)彼此电隔离。 该系统还包括位于地球表面上的电磁源(71A-C)。 电磁源连接到至少两个套管段。 电磁源被配置为激励至少两个壳体段,以便在钻孔套管周围的岩层中产生电磁场。

    SURFACE EXCITATION RANGING SYSTEM FOR SAGD APPLICATION
    85.
    发明申请
    SURFACE EXCITATION RANGING SYSTEM FOR SAGD APPLICATION 审中-公开
    SAGD应用的表面激发测距系统

    公开(公告)号:WO2014089402A3

    公开(公告)日:2014-08-28

    申请号:PCT/US2013073521

    申请日:2013-12-06

    Abstract: A system for ranging between two wellbores where an emitter electrode and return electrode of a current injection system are disposed to drive a current to a conductive member within a target wellbore to create an electromagnetic field about the conductive member. The electromagnetic field is measured utilizing a sensor disposed in an investigative wellbore, which may be in the process of being drilled. In some embodiments, the emitter electrode and return electrode are positioned on the surface of a formation, spaced apart from one another with locations on the surface selected to optimize current, and therefore, the electromagnetic field, at a desired point along the conductive member. In some embodiments, one or both of the emitter electrode and return electrode are positioned in the target wellbore.

    Abstract translation: 一种用于在两个井筒之间进行测距的系统,其中布置了电流注入系统的发射极和返回电极,以驱动目标井眼内的导电构件的电流,以产生围绕导电构件的电磁场。 使用位于调查井筒中的传感器来测量电磁场,该传感器可能正在钻探过程中。 在一些实施例中,发射极和返回电极位于地层的表面上,彼此间隔开,其中选定的表面上的位置以优化电流,并因此在沿着导电构件的期望点处电磁场。 在一些实施例中,发射电极和返回电极中的一个或两个位于目标井筒中。

    SYSTEMS AND METHODS FOR LOOK AHEAD RESISTIVITY MEASUREMENT WITH OFFSET WELL INFORMATION
    86.
    发明申请
    SYSTEMS AND METHODS FOR LOOK AHEAD RESISTIVITY MEASUREMENT WITH OFFSET WELL INFORMATION 审中-公开
    系统和方法用于远程电阻测量与偏好的信息

    公开(公告)号:WO2014098840A1

    公开(公告)日:2014-06-26

    申请号:PCT/US2012/070592

    申请日:2012-12-19

    Abstract: Systems and methods for obtaining deep resistivity measurements are described herein. The method may include obtaining first formation data from a first borehole within a formation. The method may further include obtaining second formation data from a drilling assembly disposed in a second borehole. In certain embodiments, the drilling assembly may comprise a drill bit and a measurement-while-drilling (MWD) or logging while drilling (LWD) assembly, and may be actively drilling the second borehole. The second formation data may correspond to a portion of the formation ahead of and around the drill bit. The first formation data and the second formation data may be correlated to identify a formation characteristic. The method may further include altering an operating condition of the drilling assembly based, at least in part, on the formation characteristic.

    Abstract translation: 本文描述了用于获得深电阻率测量的系统和方法。 该方法可以包括从地层内的第一钻孔获得第一地层数据。 该方法还可以包括从设置在第二钻孔中的钻井组件获得第二地层数据。 在某些实施例中,钻井组件可以包括钻头和钻孔测量(MWD)或钻井测井(LWD)组件,并且可以主动钻出第二钻孔。 第二形成数据可以对应于在钻头前方和周围的地层的一部分。 可以将第一形成数据和第二形成数据相关联以识别形成特征。 该方法还可以包括至少部分地基于地层特征改变钻井组件的操作状态。

    OPTICAL PUSH-PULL INTERFEROMETRIC SENSORS FOR ELECTROMAGNETIC SENSING
    87.
    发明申请
    OPTICAL PUSH-PULL INTERFEROMETRIC SENSORS FOR ELECTROMAGNETIC SENSING 审中-公开
    用于电磁感应的光学推拉式干涉式传感器

    公开(公告)号:WO2014077986A1

    公开(公告)日:2014-05-22

    申请号:PCT/US2013/064122

    申请日:2013-10-09

    CPC classification number: G01V3/38 G01R33/032 G01V3/26 G01V3/30

    Abstract: A method of measuring an electromagnetic field in a formation can include installing an electromagnetic sensor with improved sensitivity, the sensor including multiple optical waveguides and respective multiple materials, and in response to exposure to the electromagnetic field, the materials changing shape in opposite directions. A well system can include an optical electromagnetic sensor which measures an electromagnetic field in a formation, and wherein optical path lengths or phases in optical waveguides of the sensor change both positively and negatively in response to exposure to the electromagnetic field. A method of monitoring a formation can include installing an optical electromagnetic sensor in a wellbore which penetrates the formation, and an optical path length/phase in an optical waveguide of the sensor increasing in response to exposure to the electromagnetic field, and an optical path length/phase in another optical waveguide of the sensor decreasing in response to exposure to the electromagnetic field.

    Abstract translation: 测量地层中的电磁场的方法可以包括安装具有改进的灵敏度的电磁传感器,该传感器包括多个光波导和相应的多种材料,并且响应于暴露于电磁场,材料在相反方向上改变形状。 井系统可以包括测量地层中的电磁场的光电磁传感器,并且其中传感器的光波导中的光路长度或相位响应于暴露于电磁场而正向和负向地改变。 监测地层的方法可以包括将光电磁传感器安装在穿透地层的井眼中,并且响应于暴露于电磁场而增加的传感器的光波导中的光路长度/相位和光路长度 传感器的另一光波导中的/相位随着暴露于电磁场而减小。

    FRACTURE SENSING SYSTEM AND METHOD
    88.
    发明申请
    FRACTURE SENSING SYSTEM AND METHOD 审中-公开
    破碎传感系统及方法

    公开(公告)号:WO2014058425A1

    公开(公告)日:2014-04-17

    申请号:PCT/US2012/059646

    申请日:2012-10-11

    Abstract: A fracture sensing system and method is disclosed herein. The method may include positioning a transmitter and a receiver in a borehole and magnetizing a casing disposed within the borehole to magnetically saturate the casing. The transmitter and receiver may be located inside or outside of the casing. The method may also include inducing with the transmitter an electromagnetic field in a formation surrounding the borehole. The method may also comprise receiving the induced electromagnetic field at the receiver. The induced electromagnetic field may identify a fracture within the formation based, at least in part, on a contrast agent within the fracture.

    Abstract translation: 本文公开了一种断裂传感系统和方法。 该方法可以包括将发射器和接收器定位在钻孔中并且使设置在钻孔内的壳体磁化,以磁化地使壳体饱和。 发射器和接收器可以位于壳体的内部或外部。 该方法还可以包括用发射器诱导围绕钻孔的地层中的电磁场。 该方法还可以包括在接收器处接收感应的电磁场。 感应电磁场可以至少部分地基于骨折内的造影剂来识别地层内的骨折。

    SYSTEM AND METHOD TO INDUCE AN ELECTROMAGNETIC FIELD WITHIN THE EARTH
    89.
    发明申请
    SYSTEM AND METHOD TO INDUCE AN ELECTROMAGNETIC FIELD WITHIN THE EARTH 审中-公开
    在地球中诱导电磁场的系统和方法

    公开(公告)号:WO2014039618A2

    公开(公告)日:2014-03-13

    申请号:PCT/US2013058158

    申请日:2013-09-05

    CPC classification number: G01V3/26 G01V3/24

    Abstract: A system (50) enables a borehole casing (60) to be used to connection with establishing electromagnetic fields within the earth at the depth of formations of interest over a significant surface area. A particular advantage is that a borehole casing (60) can be used as an essential part of the system (50), without needing to open the borehole.

    Abstract translation: 系统(50)使得钻孔套管(60)能够用于连接,以在相当大的表面积的感兴趣深度处的地球内建立电磁场。 特别的优点是可以将钻孔套管(60)用作系统(50)的基本部分,而无需打开钻孔。

    APPARATUS AND METHODS OF SKIN EFFECT CORRECTION
    90.
    发明申请
    APPARATUS AND METHODS OF SKIN EFFECT CORRECTION 审中-公开
    皮肤效应矫正的装置和方法

    公开(公告)号:WO2013122590A1

    公开(公告)日:2013-08-22

    申请号:PCT/US2012/025477

    申请日:2012-02-16

    CPC classification number: G01V3/38 G01V3/20 G01V3/26

    Abstract: Various embodiments include apparatus and methods to provide a skin- effect correction. The skin-effect correction can be based on a pre-calculated correction coefficient library. In various embodiments, a skin-effect correction procedure can be applied that only uses a single-frequency R-signal measurement. In addition, an embodiment of a skin-effect correction procedure using a single- frequency R-signal measurement can be applied whenever the quality of the data from one of the multiple frequencies normally used in a multi- frequency method is reliable. Additional apparatus, systems, and methods are disclosed.

    Abstract translation: 各种实施例包括提供皮肤效应校正的装置和方法。 皮肤效应校正可以基于预先计算的校正系数库。 在各种实施例中,可以应用仅使用单频R信号测量的皮肤效应校正程序。 此外,只要来自多频方法中通常使用的多个频率之一的数据的质量可靠,可以应用使用单频R信号测量的皮肤效应校正过程的实施例。 公开了附加装置,系统和方法。

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