MILLING WELL CASING USING ELECTROMAGNETIC PULSE
    2.
    发明公开
    MILLING WELL CASING USING ELECTROMAGNETIC PULSE 审中-公开
    井管道与电磁脉冲铣削

    公开(公告)号:EP2619410A1

    公开(公告)日:2013-07-31

    申请号:EP10859495.3

    申请日:2010-11-11

    IPC分类号: E21B43/11

    摘要: An electromagnetic perforation device for well casings includes a coil disposed around a core carried by a mandrel. The device further includes a power supply coupled to a current supply device, which is coupled to said coil. A stabilizing member extends from the mandrel and spaced apart on the mandrel from the coil core. The electromagnetic perforation device may be positioned in a well casing, and the current supply device may rapidly supply a current to the coil to created an electromagnetic field in the coil and simultaneously induces a magnetic field in the well casing. The coil, current, and well casing may be selected such that electromagnetic field and the magnetic field produce repulsive magnetic forces that are sufficient to overcome a yield strength of the well casing and perforate the well casing.

    ANTENNA COUPLING COMPONENT MEASUREMENT TOOL HAVING ROTATING ANTENNA CONFIGURATION

    公开(公告)号:EP2066866B1

    公开(公告)日:2018-09-12

    申请号:EP06840278.3

    申请日:2006-12-15

    IPC分类号: E21B25/16 G01V3/28

    摘要: Disclosed herein are electromagnetic resistivity logging systems and methods that employ an antenna configuration having at most two transmitter or receiver antenna orientations that rotate relative to the borehole. The measurements made by this reduced-complexity antenna configuration enable the determination of at least seven components of a coupling matrix, which may be determined using a linear system of equations that express the azimuthal dependence of the measurements. For increased reliability, measurement averaging may be performed in azimuthally spaced bins. The coupling matrix components can then be used as the basis for determining logs of various formation parameters, including vertical resistivity and anisotropy.

    ANTENNA CUTOUT IN A DOWNHOLE TUBULAR
    6.
    发明公开
    ANTENNA CUTOUT IN A DOWNHOLE TUBULAR 审中-公开
    EINEM BOHRLOCHROHR中的天花蛋白

    公开(公告)号:EP3168654A2

    公开(公告)日:2017-05-17

    申请号:EP16181334.0

    申请日:2006-08-04

    IPC分类号: G01V3/30 E21B47/01

    摘要: In some embodiments, an apparatus (200) includes a tubular to operate downhole. The tubular has a longitudinal axis and has a cutout (210N) that has a direction that is other than 90 degrees to the longitudinal axis of the tubular. The apparatus also includes an antenna (202A) positioned in the cutout of the tubular. The antenna is to perform at least one of a transmission or reception of an electromagnetic signal that has a path that is to traverse a subsurface formation.

    摘要翻译: 在一些实施例中,装置(200)包括用于井下操作的管状物。 管状物具有纵向轴线并且具有与管状物的纵向轴线不同于90度的方向的切口(210N)。 该装置还包括定位在管状切口中的天线(202A)。 该天线将执行具有穿过地下地层的路径的电磁信号的发送或接收中的至少一个。

    METHOD FOR MEASURING REMOTE FIELD EDDY CURRENT THICKNESS IN MULTIPLE TUBULAR CONFIGURATION
    7.
    发明公开
    METHOD FOR MEASURING REMOTE FIELD EDDY CURRENT THICKNESS IN MULTIPLE TUBULAR CONFIGURATION 审中-公开
    法测量远场的涡流的强度在具有多个管的结构

    公开(公告)号:EP2612105A1

    公开(公告)日:2013-07-10

    申请号:EP11833224.6

    申请日:2011-10-11

    IPC分类号: G01B7/06

    摘要: In accordance with aspects of the present invention, a method of inspecting a well tubular is disclosed. The method utilizes a probe with a transmitter and detectors spaced from the transmitter by at least twice the diameter of the pipe to be tested. In some cases where multi-tubular structures are tested, the probe can include further detectors spaced from the transmitter by at least twice the diameter of the outer pipes as well. The phase of signals detected by the detectors relative to the transmitter are utilized to detect faults in the pipes.

    摘要翻译: 在本发明的各方面雅舞蹈,检查井管的方法是游离缺失盘。 该方法利用与由至少两次要测试的管的直径从发射机间隔开的发送器和检测器的样品。 在某些情况下,多管结构进行了测试,该测试可以包括由外管的至少两倍的直径从发射器间隔开,以及另外的检测器。 的相对于发射器中的检测器检测到的信号的相位被用于在管道中检测到故障。

    NON-CONTACT FLUID RESISTIVITY MEASUREMENT
    10.
    发明公开
    NON-CONTACT FLUID RESISTIVITY MEASUREMENT 审中-公开
    非接触式测量流体阻力

    公开(公告)号:EP2959327A1

    公开(公告)日:2015-12-30

    申请号:EP13724076.8

    申请日:2013-05-03

    摘要: According to aspects of the present disclosure, systems and methods for measuring fluid resistivity are described herein. An example system may include a non-conductive tube. The non-conductive tube may be filled with a fluid, such as a formation fluid or drilling fluid, whose resistivity needs to be determined. A transmitter may be disposed around an outer surface of the non-conductive tube. A first receiver may be disposed around the outer surface of the non-conductive tube, and a second receiver may be positioned within a bore of the non-conductive tube. The transmitter may generate a primary electromagnetic field in a fluid within the tube, which may in turn generate an eddy current and a secondary electromagnetic field. The first and second receivers may be used to identify the eddy current and the resistivity of the fluid.