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75 条记录 (耗时 0.018 秒)

    Rotary and axial modulation for mud-pulse telemetry
    61.
    发明公开
    Rotary and axial modulation for mud-pulse telemetry 审中-公开
    旋转和轴向模拟泥浆脉冲遥测

    公开(公告)号：EP2957717A1

    公开(公告)日：2015-12-23

    申请号：EP14290191.7

    申请日：2014-06-19

    申请人： Services Petroliers Schlumberger ,  Schlumberger Holdings Limited ,  Schlumberger Technology B.V.

    发明人： Delcombel, Gregory

    IPC分类号： E21B47/18

    CPC分类号： E21B47/182

    摘要： A mud-pulse telemetry tool (46) carried by a drill collar and comprising a stator (62), positionally fixed relative to the drill collar, and a rotor (64), axially offset from the stator by a gap. A first actuator (58) is operable to cause selective rotation of the rotor relative to the stator. A second actuator (59) is operable to cause selective adjustment of the gap during operation of the mud-pulse telemetry tool within a wellbore. Such telemetry tool may form a pressure pulse generator, operable to generate a pressure wave in drilling mud in the wellbore, and a data encoder, operable to receive data from a data source and vary the pressure wave based on the data such that the pressure wave encodes the data, wherein the pressure pulse generator and the data encoder are collectively operable to modulate the data-encoded pressure wave utilizing at least three different pressure levels.

    摘要翻译： 一种由钻铤承载并包括相对于钻铤位置固定的定子（62）的泥浆脉冲遥测工具（46），以及通过间隙从定子轴向偏移的转子（64）。 第一致动器（58）可操作以引起转子相对于定子的选择性旋转。 第二致动器（59）可操作以在钻井中的泥浆脉冲遥测工具的操作期间引起间隙的选择性调节。 这种遥测工具可以形成压力脉冲发生器，可操作以在钻井中产生钻井泥浆中的压力波，以及数据编码器，可操作以从数据源接收数据，并且基于数据改变压力波，使得压力波 对数据进行编码，其中压力脉冲发生器和数据编码器可共同操作，以利用至少三个不同的压力水平来调制数据编码的压力波。

    ACOUSTIC DATA LINK FOR DOWNHOLE MWD SYSTEM
    63.
    发明公开
    ACOUSTIC DATA LINK FOR DOWNHOLE MWD SYSTEM 失效
    用于空穴测量声学数据链路，而钻

    公开(公告)号：EP0975851A4

    公开(公告)日：2004-08-11

    申请号：EP98915587

    申请日：1998-04-14

    申请人： HALLIBURTON ENERGY SERV INC

    发明人： BIRCHAK JAMES ROBERT ,  GARDNER CLARENCE GERALD ,  YOO KWANG

    IPC分类号： E21B47/14 ,  E21B47/16 ,  E21B47/18 ,  E21B7/00 ,  G01V1/28 ,  G01V1/36 ,  G01V1/48

    CPC分类号： E21B47/16 ,  E21B47/14 ,  E21B47/18 ,  E21B47/182

    摘要： A system is disclosed for transmitting and receiving acoustic data signals in a well containing a drill string. The system includes devices for transmitting acoustic signals through the drill string, drilling mud, and formation, and further includes methods for transmitting and interpreting the acoustic signal so as to maximize accuracy of the transmission. The methods of the present invention include correlating signals transmitted along different paths or paths of different lengths, using frequency shift keying transmission, using shear waves to transmit signals through downhole equipment and using compression waves to transmit signals through the mud. The signals further give information about the frequency dependence of formation speed of sound and formation acoustic attenuation. The method also give information for imaging the locations of reflective boundaries in the material surrounding the borehole. The system offers the advantage to the driller of receiving essentially real time information about properties of the formation surrounding the bit.

    HYDRAULICALLY BALANCED RECIPROCATING PULSER VALVE FOR MUD PULSE TELEMETRY
    64.
    发明公开
    HYDRAULICALLY BALANCED RECIPROCATING PULSER VALVE FOR MUD PULSE TELEMETRY 有权
    液压平衡往复压力脉冲阀遥测

    公开(公告)号：EP1377725A2

    公开(公告)日：2004-01-07

    申请号：EP02717610.6

    申请日：2002-03-13

    申请人： BAKER HUGHES INCORPORATED

    发明人： HAHN, Detlef ,  PETERS, Volker ,  ROUATBI, Cedric

    IPC分类号： E21B1/00

    CPC分类号： E21B47/182 ,  E21B47/18 ,  H04L1/0001 ,  H04L27/0008 ,  Y10T137/5109

    摘要： A reciprocating mud pulser system comprising a poppet (103) and a stationary valve assembly (25) with axial flow passages (109). The poppet (103) reciprocates close to the valve assembly, blocking the flow through the valve assembly and generating oscillating pressure pulses. The poppet (103) passes through two zero speed positions per cycle, enabling rapid changes in signal phase, frequency, and/or amplitude thereby facilitating enhanced data encoding like ASK, PSK or FSK . The poppet (103) is driven by a linear electric motor (104) disposed in a lubricant filled housing (108). The housing to shaft seal consists of bellows (107). A force balance spring (105) is used to offset the hydraulic forces on the poppet (103). A bypass poppet (160) is used to adjust the differential pressure across the valve assembly.

    Pressure pulse generator for measurement-while-drilling systems which produces high signal strength and exhibits high resistance to jamming
    65.
    发明公开
    Pressure pulse generator for measurement-while-drilling systems which produces high signal strength and exhibits high resistance to jamming 有权
    发生器，用于为设备的压力脉冲用于测量同时钻井的高信号强度和预防癫痫发作的激发

    公开(公告)号：EP0916807A2

    公开(公告)日：1999-05-19

    申请号：EP98309188.5

    申请日：1998-11-10

    申请人： Anadrill International, S.A. ,  SERVICES PETROLIERS SCHLUMBERGER

    发明人： Moriarty, Keith A.

    IPC分类号： E21B47/18

    CPC分类号： E21B47/182 ,  E21B47/18

    摘要： A system is disclosed for generating and transmitting data signals to the surface of the earth while drilling a borehole, the system operating by generating pressure pulses in the drilling fluid filling the drill string. The system is designed to maximize signal strength while minimizing the probability of jamming by drilling fluid particulates. The system uses a rotary valve modulator consisting of a stator with flow orifices through which drilling fluid flows, and a rotor which rotates with respect to the stator thereby opening and restricting flow through the orifices and thereby generating pressure pulses. The flow orifices with the stator in a "closed" position are configured to reduce jamming, and to simultaneously minimize flow area in order to maximize signal strength. This is accomplished by imparting a shear to the fluid flow through the modulator, and minimizing the aspect ratio and maximizing the minimum principal dimension of the closed flow area. A preferred embodiment and three alternate embodiments of the modulator are disclosed.

    摘要翻译： 一种系统，光盘游离缺失用于产生和发送数据信号到在地球表面上，同时钻出钻孔，该系统通过在钻井流体中产生压力脉冲填充所述钻柱操作。该系统被设计以最大化信号强度，同时最小化的概率 由钻井液颗粒卡住。 该系统采用一个旋转阀调制器由具有流孔，通过该钻井流体流，和一个转子，该转子相对于该定子，由此打开并限制通过孔口的流动，并由此产生压力脉冲旋转的定子的。 在“闭合”位置上的定子的流孔被构造为减少干扰，以减少同时为了最大化信号强度过流面积。 这是通过调制器赋予的剪切流体流，以及最小化的纵横比和最大化封闭流区域的最小主要尺寸来实现的。 优选的实施方式和调制器的3个替代实施例中是游离缺失盘。

    Measurement while drilling tool
    69.
    发明公开
    Measurement while drilling tool 失效
    Werkzeug zum Messenwährenddes Bohrens。

    公开(公告)号：EP0681090A2

    公开(公告)日：1995-11-08

    申请号：EP95302658.0

    申请日：1995-04-21

    申请人： Anadrill International SA ,  SERVICES PETROLIERS SCHLUMBERGER

    发明人： Lerner, Daniel ,  Masak, Peter

    IPC分类号： E21B47/18 ,  E21B47/00

    CPC分类号： E21B41/0085 ,  E21B47/18 ,  E21B47/182

    摘要： An integrated modulator and turbine-generator includes a turbine impeller (58) which is directly coupled by a drive shaft (54) to a modulator rotor (60) downstream from the impeller (58). The modulator rotor (60) is further coupled by a drive shaft (54) and a gear train to a three phase alternator (64) downstream of the modulator rotor. The modulator stator blades (52) are arranged downstream of and adjacent to the modulator rotor (60) and the alternator (64) is provided with a Hall effect tachometer. The turbine impeller (58) directly drives the modulator rotor (60) and the alternator (64) generates power. The speed of rotation of the modulator rotor (60) is adjusted by reference to the speed of rotation of the alternator (64) as indicated by the tachometer and to a reference frequency. A control circuit including an electromagnetic braking circuit coupled to the tachometer and the stator windings of the alternator (64) stabilizes the alternator speed and thus the rotor speed and modulates the rotor (60) to obtain the desired frequency of the mudborne pressure wave by selectively shorting the stator windings of the alternator. During periods when braking is not applied, the alternator (64) generates power for control and sensor electronics.

    摘要翻译： 集成调制器和涡轮发电机包括涡轮叶轮，其通过驱动轴直接耦合到叶轮下游的调制器转子。 调制器转子还通过驱动轴和齿轮系耦合到调制器转子下游的三相交流发电机。 调制器定子叶片布置在调制器转子的下游并与调制器转子相邻，交流发电机配有霍尔效应转速计。 涡轮叶轮直接驱动调制器转子，交流发电机发电。 参照转速表所示的交流发电机的旋转速度和参考频率来调整调制器转子的旋转速度。 包括耦合到转速计的电磁制动电路和交流发电机的定子绕组的控制电路稳定了交流发电机的速度，从而稳定了转子速度，并且通过选择性地使定子绕组的定子绕组短路来调节转子以获得泥浆压力波的期望频率 交流发电机。 在不施加制动的时段，交流发电机产生用于控制和传感器电子设备的电力。