Resistivity tools with segmented azimuthally sensitive antennas and methods of making same
    21.
    发明授权
    Resistivity tools with segmented azimuthally sensitive antennas and methods of making same 有权
    具有分段方位角敏感天线的电阻率工具及其制作方法

    公开(公告)号:US07800372B2

    公开(公告)日:2010-09-21

    申请号:US11854882

    申请日:2007-09-13

    IPC分类号: G01V3/08 G01V3/10

    CPC分类号: G01V3/30

    摘要: In one aspect, an apparatus and a method for estimating one or more electrical properties downhole are provided. The apparatus, in one embodiment, may include a metallic member that has a longitudinal axis and a radial axis, at least two groups of slots formed in the metallic member, each group of slots having at lest two rows of slots, each row of slots containing at least one slot, and an electrical conductor placed over the at least two rows of slots at an angle to the radial axis of the metallic member to form an antenna of a tool for use in a wellbore for estimating the electrical properties downhole. The antenna may be configured to operate as a transmitter or as a receiver.

    摘要翻译: 在一个方面,提供了一种用于估计井下的一个或多个电气特性的装置和方法。 在一个实施例中,该装置可以包括具有纵向轴线和径向轴线的金属构件,形成在金属构件中的至少两组槽,每组槽中至少有两排槽,每排槽 包含至少一个槽,以及电导体,其以与所述金属构件的径向轴线成一定角度放置在所述至少两排槽上方,以形成用于在井眼中用于估计井下电气特性的工具的天线。 天线可以被配置为作为发射机或接收机操作。

    Downhole cutting tool and method
    22.
    发明授权
    Downhole cutting tool and method 有权
    井下切割工具及方法

    公开(公告)号:US07644763B2

    公开(公告)日:2010-01-12

    申请号:US11690925

    申请日:2007-03-26

    申请人: Andreas Peter

    发明人: Andreas Peter

    IPC分类号: E21B43/11

    CPC分类号: E21B29/005 B23D45/128

    摘要: Disclosed herein is a downhole cutting tool. The downhole cutting tool including, a cutting member mounted on a rotatable shaft, a shaft-deflecting device in operable communication with the shaft, and a motor in operable communication with the shaft.

    摘要翻译: 这里公开了一种井下切削工具。 所述井下切削工具包括:安装在可旋转轴上的切割构件,与所述轴可操作地连通的轴偏转装置,以及与所述轴可操作地连通的马达。

    SHAVING FOIL FOR AN ELECTRIC SHAVING APPARATUS
    23.
    发明申请
    SHAVING FOIL FOR AN ELECTRIC SHAVING APPARATUS 有权
    剃须刀用于电动剃须装置

    公开(公告)号:US20090271994A1

    公开(公告)日:2009-11-05

    申请号:US12437156

    申请日:2009-05-07

    IPC分类号: B26B19/04 B23P13/02

    CPC分类号: B26B19/384 Y10T29/49995

    摘要: A shaving foil for an electric shaving apparatus. The shaving foil includes a perforated region with a plurality of holes which are separated from each other by bars. The perforated region is divided at least into two zones, preferably a central zone, a first edge zone, and a second edge zone. The central zone is arranged between the first edge zone and the second edge zone. The holes in the central zone have (i) an average size which is smaller than the average size of the holes in the first edge zone and in the second edge zone, (ii) a floating mean value of the size of the openings in the central zone smaller than a floating mean value of the size of the openings in the first edge zone and the second edge zone, or both (i) and (ii).

    摘要翻译: 用于电动剃须刀的剃须刀。 剃刮箔包括具有多个孔的穿孔区域,所述多个孔通过杆彼此分离。 穿孔区域至少分成两个区域,优选中央区域,第一边缘区域和第二边缘区域。 中央区域布置在第一边缘区域和第二边缘区域之间。 中心区域中的孔具有(i)小于第一边缘区域和第二边缘区域中的孔的平均尺寸的平均尺寸,(ii)在第一边缘区域中的孔的尺寸的浮动平均值 中心区域小于第一边缘区域和第二边缘区域中的开口尺寸的浮动平均值,或者(i)和(ii)两者。

    Short Normal Electrical Measurement Using an EM-Transmitter
    24.
    发明申请
    Short Normal Electrical Measurement Using an EM-Transmitter 审中-公开
    使用EM变送器的短正常电气测量

    公开(公告)号:US20090066334A1

    公开(公告)日:2009-03-12

    申请号:US12204090

    申请日:2008-09-04

    申请人: Andreas Peter

    发明人: Andreas Peter

    IPC分类号: G01V3/18

    摘要: A method and apparatus for determination of a formation resistivity property in which an impedance of a downhole antenna that includes an upper gap sub insulated from a lower sub is used as an estimate of the formation resistivity property.

    摘要翻译: 用于确定地层电阻特性的方法和装置,其中使用包括与较低子绝缘的上间隙子的井下天线的阻抗作为地层电阻率性质的估计。

    Directional control of downhole component using NMR measurements

    公开(公告)号:US11313991B2

    公开(公告)日:2022-04-26

    申请号:US16867958

    申请日:2020-05-06

    摘要: A system for acquiring directional information about a geologic formation includes at least one directionally sensitive nuclear magnetic resonance (NMR) assembly disposed at a borehole string including the downhole component. The at least one NMR assembly includes at least one magnet configured to generate a static magnetic field and at least one coil configured to generate an oscillating magnetic field, the at least one NMR assembly configured to perform an NMR measurement of at least one sector of a formation region. The system also includes a processing device configured to receive NMR measurement data from the at least one NMR assembly. The processing device is configured to analyze the NMR measurement data to estimate a parameter of the sector, determine a direction of the downhole component based on the estimated parameter; and steer the downhole component according to the determined direction.

    NANOCRYSTALLINE TAPES FOR WIRELESS TRANSMISSION OF ELECTRICAL SIGNALS AND POWER IN DOWNHOLE DRILLING SYSTEMS

    公开(公告)号:US20210156200A1

    公开(公告)日:2021-05-27

    申请号:US17168777

    申请日:2021-02-05

    IPC分类号: E21B7/06 E21B47/13

    摘要: Steering assemblies, drilling systems, and method for drilling boreholes are described. The steering assemblies include a first member having a first transceiver connected to the first member, a second member arranged about the first member with a second transceiver connected to the second member, and a non-conductive gap between the first transceiver and the second transceiver. The first transceiver is positioned proximate to the second transceiver in an axial direction with the non-conductive gap therebetween, and at least one of the first transceiver and the second transceiver includes at least one nanocrystalline tape and is configured to transmit current between the first transceiver and the second transceiver.

    SYSTEM AND METHOD FOR SURFACE TO DOWNHOLE COMMUNICATION WITHOUT FLOW

    公开(公告)号:US20200370427A1

    公开(公告)日:2020-11-26

    申请号:US16881546

    申请日:2020-05-22

    申请人: Andreas Peter

    发明人: Andreas Peter

    摘要: A flow-off telemetry system and method of communicating information from a downhole location in a borehole to a surface location while fluid circulation is off. A string is conveyed in the wellbore to define an inner bore and an annulus. During a flow-off condition, an inner bore sealing element closes the inner bore to create a first standing column of fluid in the inner bore, and an annulus sealing element closes the annulus to form a second standing column of fluid in the annulus. A bypass valve in the string at a downhole location between the first standing column of fluid and the second standing column of fluid is activated to generate a pressure pulse including information for performing an action. The pressure pulse is received at a pressure sensor at the surface location and a controller performs an action in response to the information in the pressure pulse.