Shock load mitigation in a downhole perforation tool assembly
    1.
    发明授权
    Shock load mitigation in a downhole perforation tool assembly 有权
    在井下穿孔工具组件中减轻冲击负荷

    公开(公告)号:US08881816B2

    公开(公告)日:2014-11-11

    申请号:US13377148

    申请日:2011-04-29

    IPC分类号: E21B29/00

    摘要: A perforation tool assembly is provided. The perforation tool assembly comprises an energy train, a first perforation gun, and a second perforation gun. The energy train comprises a moderator to reduce the speed of propagation of a detonation in a direction parallel to the axis of the perforation tool assembly. The first perforation gun comprises a plurality of explosive charges coupled to a first portion of the energy train. The second perforation gun comprises a plurality of explosive charges coupled to a second portion of the energy train, wherein the second portion of the energy train is coupled to the first portion of the energy train.

    摘要翻译: 提供穿孔工具组件。 穿孔工具组件包括能量列,第一穿孔枪和第二穿孔枪。 能量列包括调节器,以减小在与穿孔工具组件的轴线平行的方向上的爆炸的传播速度。 第一穿孔枪包括耦合到能量列的第一部分的多个炸药。 第二穿孔枪包括耦合到能量列的第二部分的多个炸药,其中能量列的第二部分联接到能量列的第一部分。

    Perforation Gun String Energy Propagation Management System and Methods
    2.
    发明申请
    Perforation Gun String Energy Propagation Management System and Methods 有权
    穿孔枪串能量传播管理系统与方法

    公开(公告)号:US20140076564A1

    公开(公告)日:2014-03-20

    申请号:US14004678

    申请日:2012-09-19

    IPC分类号: E21B43/116

    CPC分类号: E21B43/116 E21B43/117

    摘要: A perforation tool assembly. The perforation tool assembly comprises a tool string connector, a perforation gun coupled to the tool string connector, and a structure configured to absorb mechanical energy released by firing one or more perforation guns. The coupling is configured to provide a limited range of motion of the tool string connector relative to the perforation gun. The tool string connector and the perforation gun retain the structure configured to absorb mechanical energy.

    摘要翻译: 穿孔工具组件。 穿孔工具组件包括工具串连接器,连接到工具串连接器的穿孔枪,以及构造成吸收通过点火一个或多个穿孔枪而释放的机械能的结构。 联接器被配置为提供工具串连接器相对于穿孔枪的有限范围的运动。 工具串连接器和穿孔枪保持构造成吸收机械能的结构。

    Perforating string with bending shock de-coupler
    3.
    发明授权
    Perforating string with bending shock de-coupler 有权
    带弯曲减震器的穿孔绳

    公开(公告)号:US08397814B2

    公开(公告)日:2013-03-19

    申请号:US13325909

    申请日:2011-12-14

    IPC分类号: E21B43/11 E21B29/02 E21B17/02

    CPC分类号: E21B17/07 E21B43/1195

    摘要: A bending shock de-coupler for use with a perforating string can include perforating string connectors at opposite ends of the de-coupler. A bending compliance of the de-coupler may substantially increase between the connectors. A well system can include a perforating string including at least one perforating gun and multiple bending shock de-couplers, each of the de-couplers having a bending compliance, and at least two of the bending compliances being different from each other. A perforating string can include a bending shock de-coupler interconnected longitudinally between two components of the perforating string. A bending compliance of the bending shock de-coupler may substantially decrease in response to angular displacement of one of the components a predetermined amount relative to the other component.

    摘要翻译: 用于穿孔线的弯曲减震器可以包括在脱耦器的相对端处的穿孔线连接器。 脱耦器的弯曲顺应性可能在连接器之间显着增加。 井系统可以包括穿孔柱,其包括至少一个穿孔枪和多个弯曲冲击脱耦器,每个脱耦器具有弯曲柔顺性,并且至少两个弯曲顺应性彼此不同。 穿孔绳可包括纵向连接在穿孔线的两个部件之间的弯曲减震器。 响应于组件中的一个的角位移相对于另一个部件的预定量,弯曲冲击解耦器的弯曲顺应性可以显着减小。

    Perforating string with longitudinal shock de-coupler
    4.
    发明授权
    Perforating string with longitudinal shock de-coupler 有权
    带纵向冲击式去耦合器的穿孔线

    公开(公告)号:US08397800B2

    公开(公告)日:2013-03-19

    申请号:US13325866

    申请日:2011-12-14

    IPC分类号: E21B43/11 E21B17/07

    CPC分类号: E21B43/1195 E21B17/07

    摘要: A shock de-coupler for use with a perforating string can include perforating string connectors at opposite ends of the de-coupler, a longitudinal axis extending between the connectors, and a biasing device which resists displacement of one connector relative to the other connector in both opposite directions along the longitudinal axis, whereby the first connector is biased toward a predetermined position relative to the second connector. A perforating string can include a shock de-coupler interconnected longitudinally between components of the perforating string, with the shock de-coupler variably resisting displacement of one component away from a predetermined position relative to the other component in each longitudinal direction, and in which a compliance of the shock de-coupler substantially decreases in response to displacement of the first component a predetermined distance away from the predetermined position relative to the second component.

    摘要翻译: 用于穿孔线的冲击去耦合器可以包括在去耦合器的相对端处的穿孔串连接器,在连接器之间延伸的纵向轴线以及抵抗两个连接器相对于另一个连接器的位移的偏置装置 沿着纵向轴线的相反方向,第一连接器相对于第二连接器偏向预定位置。 射孔绳可以包括纵向互相连接的穿孔针组件之间的冲击去耦合器,其中冲击去耦合器在每个纵向方向上可相对于另一部件远离预定位置变化地抵抗一个部件的位移, 响应于第一部件相对于第二部件离开预定位置预定距离的位移,冲击去耦合器的顺应性大大降低。

    Shock Load Mitigation in a Downhole Perforation Tool Assembly
    5.
    发明申请
    Shock Load Mitigation in a Downhole Perforation Tool Assembly 有权
    井下穿孔工具组件的减震作用

    公开(公告)号:US20120273201A1

    公开(公告)日:2012-11-01

    申请号:US13377148

    申请日:2011-04-29

    IPC分类号: E21B43/11

    摘要: A perforation tool assembly is provided. The perforation tool assembly comprises an energy train, a first perforation gun, and a second perforation gun. The energy train comprises a moderator to reduce the speed of propagation of a detonation in a direction parallel to the axis of the perforation tool assembly. The first perforation gun comprises a plurality of explosive charges coupled to a first portion of the energy train. The second perforation gun comprises a plurality of explosive charges coupled to a second portion of the energy train, wherein the second portion of the energy train is coupled to the first portion of the energy train.

    摘要翻译: 提供穿孔工具组件。 穿孔工具组件包括能量列,第一穿孔枪和第二穿孔枪。 能量列包括调节器,以减小在与穿孔工具组件的轴线平行的方向上的爆炸的传播速度。 第一穿孔枪包括耦合到能量列的第一部分的多个炸药。 第二穿孔枪包括耦合到能量列的第二部分的多个炸药,其中能量列的第二部分联接到能量列的第一部分。

    Perforating gun with internal shock mitigation
    7.
    发明授权
    Perforating gun with internal shock mitigation 有权
    穿孔枪内部减震

    公开(公告)号:US09091152B2

    公开(公告)日:2015-07-28

    申请号:US13493327

    申请日:2012-06-11

    IPC分类号: E21B43/119

    CPC分类号: E21B43/1195

    摘要: A perforating gun can include at least one explosive component, and a shock mitigation device including a shock reflector which indirectly reflects a shock wave produced by detonation of the explosive component. Another perforating gun can include a gun housing, at least one explosive component, and a shock mitigation device in the gun housing. The shock mitigation device can include a shock attenuator which attenuates a shock wave produced by detonation of the explosive component. Yet another perforating gun can include a shock mitigation device with an explosive material which produces a shock wave that interacts with another shock wave produced by detonation of an explosive component in a gun housing.

    摘要翻译: 穿孔枪可以包括至少一个爆炸部件和包括冲击反射器的减震装置,该冲击反射器间接反映由爆炸部件爆炸产生的冲击波。 另一个穿孔枪可以包括枪壳体,至少一个爆炸部件和枪壳体中的减震装置。 减震装置可以包括衰减由炸药部件引爆产生的冲击波的冲击衰减器。 另一个穿孔枪可以包括具有爆炸材料的减震装置,其产生与通过在枪壳中爆炸成分的爆炸产生的另一冲击波相互作用的冲击波。

    Perforating string with longitudinal shock de-coupler

    公开(公告)号:US08408286B2

    公开(公告)日:2013-04-02

    申请号:US13495035

    申请日:2012-06-13

    IPC分类号: E21B43/11 E21B17/07

    CPC分类号: E21B43/1195 E21B17/07

    摘要: A shock de-coupler for use with a perforating string can include perforating string connectors at opposite ends of the de-coupler, a longitudinal axis extending between the connectors, and a biasing device which resists displacement of one connector relative to the other connector in both opposite directions along the longitudinal axis, whereby the first connector is biased toward a predetermined position relative to the second connector. A perforating string can include a shock de-coupler interconnected longitudinally between components of the perforating string, with the shock de-coupler variably resisting displacement of one component away from a predetermined position relative to the other component in each longitudinal direction, and in which a compliance of the shock de-coupler substantially decreases in response to displacement of the first component a predetermined distance away from the predetermined position relative to the second component.

    Coupler compliance tuning for mitigating shock produced by well perforating

    公开(公告)号:US08393393B2

    公开(公告)日:2013-03-12

    申请号:US13325726

    申请日:2011-12-14

    IPC分类号: E21B43/11

    CPC分类号: E21B43/1195

    摘要: A method of mitigating perforating effects produced by well perforating can include causing a shock model to predict perforating effects for a proposed perforating string, optimizing a compliance curve of at least one proposed coupler, thereby mitigating the perforating effects for the proposed perforating string, and providing at least one actual coupler having substantially the same compliance curve as the proposed coupler. A well system can comprise a perforating string including at least one perforating gun and multiple couplers, each of the couplers having a compliance curve, and at least two of the compliance curves being different from each other. A method of mitigating perforating effects produced by well perforating can include interconnecting multiple couplers spaced apart in a perforating string, each of the couplers having a compliance curve, and selecting the compliance curves based on predictions by a shock model of shock generated by the perforating string.