Downhole current generator
    4.
    发明公开
    Downhole current generator 有权
    电流发生器在井筒使用

    公开(公告)号:EP0909008A3

    公开(公告)日:2001-09-12

    申请号:EP98307453.5

    申请日:1998-09-15

    IPC分类号: H02K7/18 E21B41/00 H02K35/02

    摘要: A downhole current generator (34) generates power in a wellbore and includes a power section (36) and a generator section (38). The power section (36) has a sleeve (44) slidably disposed within a housing (42) which oscillates in response to the application of fluid pressure to the current generator (34). A piston (48) is slidably attached to the sleeve (44) and oscillates relative to the sleeve (44) and the housing (42). The piston (87) extends longitudinally into the generator section (38) and has a plurality of magnets (78) attached thereto which oscillate with the piston (48). Wire coil sections (82) are fixed relative to the housing of the generator section (38) and are positioned between the oscillating magnets (78) such that a current is induced in the wire coil sections (82) upon oscillation of the magnets (78)

    Downhole telemetry system and method for remote communication
    6.
    发明公开
    Downhole telemetry system and method for remote communication 审中-公开
    Bohrlochtelemetrieanordnung und Verfahren zurFernübertragung

    公开(公告)号:EP0932054A3

    公开(公告)日:2000-06-14

    申请号:EP99300549.5

    申请日:1999-01-26

    IPC分类号: G01V1/22 E21B47/12

    摘要: A downhole telemetry system (10) for remote communication. The system (10) includes a downhole transmitter (44) that radiates an electromagnetic signal (46) carrying information into the earth. The electromagnetic signal (46) is received by a subsea repeater (48) that processes and retransmits the information through the sea. A remote station (54) receives the information from the subsea repeater (48) and stores the information. A master station (70) periodically polls the remote station (54) to request the information using meteor burst trails (76) to reflect radio waves (80) between the master station (70) and the remote station (54). Following the request, the remote station (54) generates radio waves (80) carrying the information that are reflected off meteor burst trails (78) and received by the master station (54).

    摘要翻译: 一种用于远程通信的井下遥测系统(10)。 该系统(10)包括一个将承载信息放入地球的电磁信号(46)的井下发射器(44)。 电磁信号(46)由海底中继器(48)接收,海底中继器(48)通过海处理和重传信息。 远程站(54)从海底中继器(48)接收信息并存储信息。 主站(70)周期性地轮询远程站(54),以使用流星突发路径(76)来请求信息,以反映主站(70)和远程站(54)之间的无线电波(80)。 按照该请求,远程站(54)生成承载从流星突发路径(78)反射并由主站(54)接收的信息的无线电波(80)。

    Well tool with combined actuation of multiple valves
    8.
    发明公开
    Well tool with combined actuation of multiple valves 审中-公开
    Bohrlochwerkzeug mit kombinierterBetätigungmehrerer Ventile

    公开(公告)号:EP2233685A2

    公开(公告)日:2010-09-29

    申请号:EP10155253.7

    申请日:2010-03-02

    IPC分类号: E21B34/10 E21B49/08

    摘要: A well tool (20) with combined actuation of multiple valves. A well tool includes at least two valves (30,32) and an actuator (24) which actuates each of the valves, one valve (32) being positioned longitudinally between the other valve (30) and the actuator (24), and the other valve being operable in response to displacement of an operating device (44) by the actuator (24).

    摘要翻译: 具有多个阀的组合致动的井具(20)。 井工具包括至少两个阀(30,32)和致动器(24),其致动每个阀,一个阀(32)纵向定位在另一阀(30)和致动器(24)之间,并且 响应于操作装置(44)由致动器(24)的移动而可操作的另一个阀。