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    METHOD AND APPARATUS FOR SEISMIC STIMULATION OF OIL-BEARING PRODUCTION FORMATIONS
    1.
    发明公开
    METHOD AND APPARATUS FOR SEISMIC STIMULATION OF OIL-BEARING PRODUCTION FORMATIONS 审中-公开

    公开(公告)号：US20240229609A1

    公开(公告)日：2024-07-11

    申请号：US18152295

    申请日：2023-01-10

    Applicant: Sergey Kostrov ,  Bill Wooden

    Inventor： Sergey Kostrov ,  Bill Wooden

    IPC: E21B43/00 ,  E21B43/16

    CPC classification number: E21B43/003 ,  E21B43/16

    Abstract: The method and apparatus for producing shock waves in a well wherein a device connected to the bottom of the tubing string in the borehole of the well filled by liquid and containing the upper and lower plungers movably arranged within corresponding cylinders for compressing a liquid inside the compression chamber and discharging the liquid into the borehole on upstroke thereby generating a shock wave. In addition, providing a required force N of said linear permanent magnet motor for the mover determined by the following expression:





    N
    ≥

    [



    π
    4

    ⁢

    (


    D
    1
    2

    -

    D
    2
    2


    )

    ⁢

    A

    S
    ⁢
    W



    +


    g
    ⁡
    (


    M
    1

    +

    M
    2


    )

    ⁢

    (

    1
    +

    k
    f


    )



    ]


    ,




    where D1 is the outside diameter of the lower plunger, D2 is the outside diameter of the upper plunger, Asw is the required amplitude of the generated shock wave, M1 is a mass of the lower and upper plungers, M2 is the mass of sucker rods, kf is a friction coefficient between plungers and corresponding cylinders, g is a gravity of acceleration.

    ACOUSTIC STIMULATION
    2.
    发明公开
    ACOUSTIC STIMULATION 审中-公开

    公开(公告)号：US20240076963A1

    公开(公告)日：2024-03-07

    申请号：US18453014

    申请日：2023-08-21

    Applicant: Global Post Graystone Inc.

    Inventor： Gregory Allen Clark ,  Ann-Marie Harmon De Clare

    IPC: E21B43/00 ,  E21B28/00

    CPC classification number: E21B43/003 ,  E21B28/00

    Abstract: A downhole acoustic stimulation tool comprises: a sealed chamber containing a liquid; a pair of electrodes located in the chamber; at least one transducer arranged to generate an acoustic field between the electrodes thereby inducing cavitation in a volume of the liquid between the electrodes; and at least one capacitor configured to apply a pulse voltage across the electrodes when discharged, thereby causing the cavitating volume of liquid to form a plasma which collapses to form a shockwave. The at least one transducer constitutes a first energy source, and the at least one capacitor back and electrodes constitute a second energy source. Alternative forms and arrangements of the first and second energy sources are also disclosed.

    Method and system for impact pressure generation
    4.
    发明授权
    Method and system for impact pressure generation 有权

    公开(公告)号：US09863225B2

    公开(公告)日：2018-01-09

    申请号：US14366648

    申请日：2012-12-19

    Applicant: IMPACT TECHNOLOGY SYSTEMS AS

    Inventor： Jim-Viktor Paulsen

    IPC: E21B43/16 ,  E21B28/00 ,  E21B43/00 ,  E21B47/00 ,  E21B49/00

    CPC classification number: E21B43/16 ,  E21B28/00 ,  E21B43/003 ,  E21B47/00 ,  E21B49/008

    Abstract: A method for the recovery of hydrocarbon from a reservoir includes arranging a chamber in fluid communication with the reservoir via at least one conduit. The chamber includes first and second wall parts movable relative to each other. An impact pressure is provided in the fluid to propagate to the reservoir via the conduit, where the impact pressure is generated by a collision process between an object arranged outside of the fluid and the first wall parts for the first wall part to impact on the fluid in the chamber. The chamber is arranged to avoid a build-up of gas-inclusions where the first wall part impacts on the fluid. This may be obtained by arranging the conduit in or adjacent to the zone where the gas-inclusions naturally gather by influence of the gravitational forces, or by placing the first wall part impacting on the fluid away from this zone.

    Method and device for selecting and maintaining hydrodynamically connected wells
    5.
    发明授权
    Method and device for selecting and maintaining hydrodynamically connected wells 有权

    公开(公告)号：US09810061B2

    公开(公告)日：2017-11-07

    申请号：US15408568

    申请日：2017-01-18

    Applicant: Yevgeny B. Levitov

    Inventor： Yevgeny B. Levitov

    IPC: E21B28/00 ,  G01V1/42 ,  G01V1/50 ,  E21B49/00 ,  E21B43/00

    CPC classification number: E21B49/00 ,  E21B28/00 ,  E21B43/003 ,  E21B43/162 ,  E21B47/00 ,  E21B47/06

    Abstract: Disclosed are methods, systems, and devices for increasing well and oil field productivity. The method comprises positioning an acoustic device in a well located within the geological formation and performing an acoustic treatment impacting a muddled zone in cycles comprising one or more manipulated waves of ultrasonic pressure on the muddled zone. The cycles comprise a Fourier transformation of a periodic function. The transformation determines a rate at which an acoustic treatment pressure of each cycle rises from zero to a maximum value. This rate is directly proportional to a force of an impact on the formation, and the greater the rate, the greater the impact. The acoustic treatment can further be detected by placing emitters and receivers in surrounding wells and calculating the signal received to determine if wells are hydrodynamically connected, such that a synergistic effect may be achieved through simultaneous treatment at several well locations.

    Adaptive Stimulation System
    7.
    发明申请
    Adaptive Stimulation System 审中-公开

    公开(公告)号：US20170114620A1

    公开(公告)日：2017-04-27

    申请号：US14919848

    申请日：2015-10-22

    Applicant: Dennis W. Gilstad ,  Barbara C. Gilstad

    Inventor： Dennis W. Gilstad ,  Barbara C. Gilstad

    IPC: E21B43/00 ,  E21B47/00 ,  E21B43/26

    CPC classification number: E21B43/003 ,  E21B43/26 ,  E21B47/12 ,  F16K15/06

    Abstract: Adaptive stimulation systems combine impulse-generated swept-frequency stimulation vibration with cyclically-varying hydraulic pressure to provide adaptive down-hole stimulation. Swept-frequency stimulation vibration arises from cyclical shifts of the power spectral density (PSD) of each stimulator's vibration (via closed-loop control of rebound cycle time). PSD's are adjusted for resonance excitation, fracturing and/or analysis of geologic materials at varying distances from a wellbore. And closed-loop control incorporates backscatter vibration from stimulated geologic material. Stimulators can be arranged singly or in spatial arrays of multiple stimulators, each stimulator generating vibration in bursts comprising a plurality of vibration frequencies. Timed signals from a programmable controller affect directional propagation of combined vibration wave fronts from a stimulator array. As fracturing proceeds to smaller (e.g., proppant-sized) fragments having higher resonant frequencies, PSD's are up-shifted, increasing relative stimulation vibration power in higher frequencies. Progressive stimulation is thereby optimized, facilitating plain-water (or liquefied propane) fracs with self-generated proppant.

    Method and Apparatus for Seismic Stimulation of Production Horizons of Hydrocarbon Bearing Formations
    8.
    发明申请
    Method and Apparatus for Seismic Stimulation of Production Horizons of Hydrocarbon Bearing Formations 审中-公开

    公开(公告)号：US20170096869A1

    公开(公告)日：2017-04-06

    申请号：US14756479

    申请日：2015-10-06

    Applicant: Sergey A. Kostrov ,  William O. Wooden

    Inventor： Sergey A. Kostrov ,  William O. Wooden

    IPC: E21B28/00 ,  E21B43/12 ,  E21B43/00

    CPC classification number: E21B28/00 ,  E21B43/003

    Abstract: The method and apparatus for producing shock waves in a well wherein a device connected to the bottom of the tubing string in the borehole of the well filled by liquid and containing the damper, the upper and lower plungers movably arranged within corresponding cylinders for compressing the liquid inside the compression chamber and discharging the liquid into the borehole on upstroke thereby generating a shock wave. In addition, providing a length of upstroke Lstr of the pumping unit determined by the following expression: L str ≥ H 1 + ( D 1 2 - D 2 2 )  A sw  L 2 Ed r 2 , where H1 is the length of the lower cylinder, L2 is the distance between the lower and upper plungers, D1 is the diameter of the lower plunger, D2 is the diameter of the upper plunger, Asw is the required amplitude of the generated shock wave, E is a modulus of elasticity of the sucker rod's material, dr is the diameter of the sucker rods.

    METHOD EMPLOYING PRESSURE TRANSIENTS IN HYDROCARBON RECOVERY OPERATIONS
    10.
    发明申请
    METHOD EMPLOYING PRESSURE TRANSIENTS IN HYDROCARBON RECOVERY OPERATIONS 审中-公开
    在油气回收运行中采用压力瞬变的方法

    公开(公告)号：US20160362955A1

    公开(公告)日：2016-12-15

    申请号：US15071856

    申请日：2016-03-16

    Applicant: Impact Technology Systems AS

    Inventor： Jim-Viktor Paulsen

    IPC: E21B28/00 ,  E21B43/16 ,  E21B43/00

    CPC classification number: E21B28/00 ,  E21B43/003 ,  E21B43/16 ,  E21B43/20

    Abstract: Methods to induce pressure transients in fluids for use in hydrocarbon recovery operations. Pressure transients are induced in a fluid by a collision process. The collision process employs a moving object that collides outside the fluid with a body that is in contact with the fluid inside a partly enclosed space. The pressure transients must be allowed to propagate in the fluid. The fluid may be one or more of the following group: primarily water, consolidation fluid, treatment fluid, cleaning fluid, drilling fluid, fracturing fluid and cement.

    Abstract translation: 在烃回收操作中引起流体压力瞬变的方法。 通过碰撞过程在液体中引起压力瞬变。 碰撞过程使用与流体外部碰撞的运动物体与在部分封闭空间内的流体接触的主体。 压力瞬变必须允许在流体中传播。 流体可以是以下组中的一个或多个：主要是水，固结液，处理液，清洗液，钻井液，压裂液和水泥。

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