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    METHOD FOR OPERATING A WELL USING A PUMP ASSEMBLY WITH A VARIABLE-FREQUENCY DRIVE
    3.
    发明公开
    METHOD FOR OPERATING A WELL USING A PUMP ASSEMBLY WITH A VARIABLE-FREQUENCY DRIVE 有权
    一种用于操作孔用泵结构可变速率的驱动

    公开(公告)号：EP2990594A1

    公开(公告)日：2016-03-02

    申请号：EP13882737.3

    申请日：2013-11-15

    申请人： Bogachuk, Yury Fedorovich ,  Obschestvo s ogranichennoi otvetstvennostju

    发明人： BUCHELNIKOV, Nikolay Vasilievich ,  BOGACHUK, Jury Fedorovich

    IPC分类号： E21B43/00

    CPC分类号： E21B43/128 ,  E21B43/00 ,  F04B47/06

    摘要： The invention pertains to the oil production and can be used in wells equipped with electric pumps namely electric submersible pumps. The method of exploitation of well by pumping unit with variable-frequency drive comprises periodic repetition of the cycles including pumpdown, search for frequency when delivery stops and accumulation and at the same time to ensure such extraction of fluid from well which is equal to its inflow it is necessary to choose unit with higher capacity in comparison with inflow of fluid from formation into well and during the cycles the pumpdown-accumulation ratio is corrected depending on the results of the previous cycles until the pumpdown-accumulation time ratio stops to change and the torque at which the delivery stops is determined based on the equality of the current torque of the downhole motor shaft and check torque which is pre-determined based on stepwise drop of torque of the downhole motor shaft in the point when delivery stops when supply voltage is decreased. The device for implementation of the method contains pumping unit placed in the production casting string consisting of electrical submersible pump and downhole motor suspended on the downhole pipe string and the is linked with frequency converter and controller located on surface. The device contains also matching transformer, frequency, current, torque, power measurement unit, communication unit, indication and control unit, the conductive cable is linked with the first input-output of the matching transformer, the second input-output of the matching transformer is linked with the input-output of the frequency converter, the second input-output of frequency converter is connected with the power supply unit, the third input-output of the frequency converter is connected with the first input-output of frequency, current, torque, power measurement unit, its second input-output is connected with the first input-output of the communication unit, the second input-output of communication unit is connected with the fourth input-output of the frequency converter, the third input-output of communication unit is connected with the first input-output of controller, the second input-output of the controller is connected with indication and control unit while all signals are transmitted to units located on the surface via conductive cable directly from the downhole motor shaft.

    ELECTRICAL SUBMERSIBLE PUMP ASSEMBLY FOR SEPARATING GAS AND OIL
    4.
    发明公开
    ELECTRICAL SUBMERSIBLE PUMP ASSEMBLY FOR SEPARATING GAS AND OIL 有权
    电潜水泵用于分离油和天然气

    公开(公告)号：EP2834454A2

    公开(公告)日：2015-02-11

    申请号：EP13716122.0

    申请日：2013-03-28

    申请人： Saudi Arabian Oil Company ,  Aramco Services Company

    发明人： NOUI-MEHIDI, Mohamed, Nabil ,  AHYAD, Rabea

    IPC分类号： E21B43/38

    CPC分类号： F04B17/03 ,  E21B43/128 ,  E21B43/38 ,  F04B47/06

    摘要： An electrical submersible pump assembly for use in a well, including a well having a high gas-to-liquid ratio has a motor, a hollow, tubular drive shaft which drives the pump, and a liquid-gas separator assembly upstream of the pump intake. The liquid-gas separator has a hollow tubular portion, which communicates with the open, lower end of the drive shaft, openings through its sidewall, and a closed lower end. The sidewall also includes at least one outwardly extending projection shaped for urging liquid contained in a liquid/gas mixture flowing towards the pump outwardly, away from the sidewall openings. Preferably, the outwardly extending projection comprises a helical blade which, using either the well casing or a separate sheath, defines a helical channel through which the oil-gas mixture flows prior to reaching the pump intake. The centrifugal force in the channel forces the oil component away from the openings and forces the gas component through the openings, where such gas may be vented to the surface.

    SYSTEM AND METHOD FOR SENSING A LIQUID LEVEL
    5.
    发明公开
    SYSTEM AND METHOD FOR SENSING A LIQUID LEVEL 审中-公开
    系统和方法用于检测液位

    公开(公告)号：EP2705335A1

    公开(公告)日：2014-03-12

    申请号：EP12720388.3

    申请日：2012-05-04

    申请人： Chevron U.S.A. Inc.

    发明人： SMITHSON, Mitchell Carl

    IPC分类号： G01F23/284 ,  F04B47/00

    CPC分类号： G01F23/284 ,  E21B47/042 ,  F04B47/06 ,  F04B49/02

    摘要： A system (100), method and device may be used to monitor fluid levels in a borehole (104). The system includes a pulse generator (120) to generate a pulse of electromagnetic energy to propagate along the wellbore towards a surface of the fluid, a detector (122) to detect a portion of the electromagnetic pulse reflected from the surface of the fluid and propagated along the wellbore towards the detector, a processor (124) to analyze detected signals to determine a level of the surface of the fluid, and a digital delay configured and arranged to define a detection time window for detecting the portion of the electromagnetic pulse reflected from the surface of the fluid. In an embodiment, the system includes a pump controller (126) to control the operation of a pump (110) located in the wellbore based on the fluid surface level.

    COMBINED BARRIER AND LUBRICATION FLUIDS PRESSURE REGULATION SYSTEM AND UNIT FOR A SUBSEA MOTOR AND PUMP MODULE
    6.
    发明公开
    COMBINED BARRIER AND LUBRICATION FLUIDS PRESSURE REGULATION SYSTEM AND UNIT FOR A SUBSEA MOTOR AND PUMP MODULE 审中-公开
    FOR A UNTERSEEMOTOR-和泵模块联合SPERRFLÜSSIGKEITEN-，油压控制系统

    公开(公告)号：EP2585681A1

    公开(公告)日：2013-05-01

    申请号：EP11797686.0

    申请日：2011-06-20

    申请人： Vetco Gray Scandinavia AS

    发明人： TOMTER, Ole, Peter

    IPC分类号： E21B43/01 ,  B63C11/00 ,  E21B43/12 ,  F04B53/16 ,  F16J15/40 ,  F16N17/00

    CPC分类号： E21B33/035 ,  F04B47/06 ,  F04B49/08 ,  F04B53/18 ,  F16J15/406

    摘要： A barrier and lubrication fluids pressure regulation system for a subsea motor and pump module is disclosed, comprising a lubrication fluid circuit in flow communication with a hydraulic fluid supply via a first pressure reducing regulator (15); and a barrier fluid circuit in flow communication with the hydraulic fluid supply via a second pressure reducing regulator (14). The first pressure reducing regulator (15) is configured to reduce the supply fluid pressure in response to the pumped medium pressure at the suction side (4) or at the discharge side (5) of the pump, and the second pressure reducing regulator (14) is configured to reduce the supply fluid pressure in response to the output pressure of the first pressure reducing regulator (15). A pressure regulation unit is likewise disclosed, and arranged for housing the components of the barrier and lubrication fluids pressure regulation system in a pressurized vessel.

    A NC RECIPROCATING IMMERSIBLE OIL PUMP
    7.
    发明授权
    A NC RECIPROCATING IMMERSIBLE OIL PUMP 有权
    数控往复式可浸油泵

    公开(公告)号：EP1790853B1

    公开(公告)日：2012-08-15

    申请号：EP05785094.3

    申请日：2005-09-13

    申请人： Feng, Chunguo ,  Liu, Zhongya

    发明人： Feng, Chunguo ,  Liu, Zhongya

    IPC分类号： E21B43/00

    CPC分类号： E21B43/128 ,  F04B47/06

    摘要： An oil pump used in deep well especially a nc reciprocating immersible oil pump, which can integrate a power equipment and the oil pump and adjust the parameter on-line, comprises a balance sieve tube, a power equipment and the oil pump, all of which are immersed in the ground oil, wherein the power equipment comprises a stator having a seal chamber and a rotor including an iron core and installed in the stator, the stator and the rotor constitute a friction pair through a supporting sleeve and the rotor core. The upper end of the stator links to the lower end of the oil pump connecting an oil outlet tube, the lower end of the stator links to the sieve tube in turn. In this application a rod and an oil pump overground are not used, therefor the fixing time and the cost are reduced, at the same time the enegy cost are decreased too.

    摘要翻译： 一种用于深井的油泵，尤其是一种可将动力设备和油泵集成在一起并在线调节参数的数控往复式潜油泵，包括平衡筛管，动力设备和油泵，所有这些 浸没在地面油中，其中动力设备包括具有密封室的定子和包括铁芯的转子，所述转子安装在定子中，定子和转子通过支撑套和转子铁芯构成摩擦副。 定子上端连接油泵下端连接出油管，定子下端依次与筛管连接。 在这种应用中，不使用地上杆和油泵，因此固定时间和成本降低，同时能量消耗也降低。

    A DEVICE FOR SELECTIVE MOVEMENT OF WELL TOOLS AND ALSO A METHOD OF USING SAME
    10.
    发明公开
    A DEVICE FOR SELECTIVE MOVEMENT OF WELL TOOLS AND ALSO A METHOD OF USING SAME 有权
    设备技术的井具的选择性移动以及其使用的其他方法

    公开(公告)号：EP1885994A1

    公开(公告)日：2008-02-13

    申请号：EP06747645.7

    申请日：2006-05-18

    申请人： Ziebel AS

    发明人： HANSEN, Henning

    IPC分类号： E21B43/12 ,  F04B17/04

    CPC分类号： F04B47/06 ,  E21B17/028 ,  E21B23/14 ,  E21B43/128 ,  F04B17/046

    摘要： The present invention relates to a device for the selective movement of a well tool (20, 20', 40) in or through at least a portion of a pipe string (2), said at least one portion of the pipe string (2) being provided with a plurality of electromagnets (3) which are arranged to produce a magnetic field in order, thereby, to move the well tool (20, 20', 40) within said at least one portion of the pipe string (2) by means of magnetic influence on said well tool (20, 20', 40) . The invention also relates to a method for practicing the invention.