Controlling transient underbalance in a wellbore
    4.
    发明授权
    Controlling transient underbalance in a wellbore 有权
    控制井筒中的瞬态不平衡

    公开(公告)号:US06732798B2

    公开(公告)日:2004-05-11

    申请号:US10316614

    申请日:2002-12-11

    IPC分类号: E21B4311

    摘要: A method and apparatus for controlling a transient underbalance condition is provided. Transient underbalance can be enhanced by using a porous material, such as a porous solid, around the explosive device. The porous material contains a volume to receive wellbore fluids in response to activation of the explosive device. This causes a local drop in pressure, which enhances the transient underbalance effect. In another application, it is desired to reduce the transient underbalance effect. This is accomplished by reducing the pressure drop generated as a result of explosive detonation. In one arrangement, the shot density is reduced by using solid masses.

    摘要翻译: 提供了一种用于控制瞬态不平衡状态的方法和装置。 可以通过在爆炸装置周围使用诸如多孔固体的多孔材料来增强瞬时不平衡。 多孔材料包含响应于爆炸装置的活化而接收井眼流体的体积。 这导致局部压力下降,这增强了瞬时不平衡效应。 在另一个应用中,期望减少瞬时欠平衡效应。 这是通过减少由于爆炸性爆炸而产生的压降而实现的。 在一种布置中,通过使用固体块来降低射出密度。

    Shaped charges for creating enhanced perforation tunnel in a well formation
    6.
    发明授权
    Shaped charges for creating enhanced perforation tunnel in a well formation 有权
    在井口形成中形成增强的穿孔隧道的成形装料

    公开(公告)号:US08584772B2

    公开(公告)日:2013-11-19

    申请号:US11307756

    申请日:2006-02-21

    IPC分类号: E21B43/116 E21B43/117

    CPC分类号: E21B43/117 E21B43/116

    摘要: A shaped charge includes a charge case; an explosive disposed inside the charge case; and a liner for retaining the explosive in the charge case, wherein the liner comprises a material reactive with a component of an earth formation. A method for perforating in a well includes disposing a perforating gun in the well, wherein the perforating gun comprises a shaped charge having a charge case, an explosive disposed inside the charge case, and a liner for retaining the explosive in the charge case, wherein the liner includes a material that can react with a component of an earth formation; detonating the shaped charge to form a perforation tunnel in a formation zone; and allowing the material comprising the liner to react with the component of the earth formation.

    摘要翻译: 成形电荷包括充电箱; 装在充电箱内的炸药; 以及用于将炸药保持在电荷箱中的衬垫,其中衬垫包括与地层的组分反应的材料。 一种用于在井中穿孔的方法包括在孔中设置穿孔枪,其中穿孔枪包括具有装药箱的成形装药器,设置在计费箱内部的炸药和用于将炸药保持在计费箱中的衬套,其中 该衬套包括能够与地层组件反应的材料; 引爆成形装置,以在形成区域形成穿孔隧道; 并且允许包含衬垫的材料与地层的组分反应。

    Dissolvable Material Application in Perforating
    7.
    发明申请
    Dissolvable Material Application in Perforating 有权
    可溶性材料在穿孔中的应用

    公开(公告)号:US20110094406A1

    公开(公告)日:2011-04-28

    申请号:US12603996

    申请日:2009-10-22

    摘要: A shaped charge includes a charge case; a liner; an explosive retained between the charge case and the liner; and a primer core disposed in a hole in the charge case and in contact with the explosive, wherein at least one of the case, the liner, the primer core, and the explosive comprising a material soluble in a selected fluid. A perforation system includes a perforation gun, comprising a gun housing that includes a safety valve or a firing valve, wherein the safety valve or the firing valve comprises a material soluble in a selected fluid.

    摘要翻译: 成形电荷包括充电箱; 班轮 在充电箱和衬管之间保留的爆炸物; 以及设置在所述充电壳体中的孔中并与所述炸药接触的底漆芯,其中所述壳体,所述衬套,所述底漆芯和所述炸药中的至少一个包括可溶于选定流体的材料。 穿孔系统包括穿孔枪,包括枪壳体,其包括安全阀或点火阀,其中安全阀或点火阀包括可溶于选定流体的材料。

    Liner for shaped charges
    8.
    发明授权
    Liner for shaped charges 有权
    衬板成型收费

    公开(公告)号:US08156871B2

    公开(公告)日:2012-04-17

    申请号:US11858955

    申请日:2007-09-21

    IPC分类号: F42B1/02

    CPC分类号: F42B1/032 F42B1/028

    摘要: A liner for a shaped charge is disclosed which comprises a plurality of portions, where at least one portion is composed of powder materials. In one embodiment, the liner comprises two portions that are composed of different powder materials, while alternative embodiments of the liner comprise three portions or four portions. When the shaped charge is used in a perforating gun, reactive powder materials may be added to the plurality of portions of the liner to optimize the penetration or the enhancement of the perforating tunnel.

    摘要翻译: 公开了一种用于成型装药的衬垫,其包括多个部分,其中至少一部分由粉末材料组成。 在一个实施例中,衬套包括由不同的粉末材料组成的两个部分,而衬套的替代实施例包括三个部分或四个部分。 当成形的电荷用于穿孔枪中时,反应性粉末材料可以被添加到衬垫的多个部分中以优化穿孔或穿孔的增强。

    Energetic material applications in shaped charges for perforation operations
    10.
    发明授权
    Energetic material applications in shaped charges for perforation operations 有权
    充满活力的材料应用于穿孔操作的成形装置

    公开(公告)号:US09080432B2

    公开(公告)日:2015-07-14

    申请号:US12878138

    申请日:2010-09-09

    IPC分类号: F42B12/00 E21B43/117 F42B1/02

    CPC分类号: F42B1/032 E21B43/117 F42B1/02

    摘要: A shaped charge includes a cup-shaped casing defining an interior volume; a liner located within the interior volume; an explosive disposed between the liner and the casing; and a reactive material disposed between the liner and the casing. A method for generating a dynamic overbalance inside a wellbore includes disposing a perforation gun in the wellbore; and detonating a shaped charge in the perforation gun, wherein the shaped charge includes a cup-shaped casing defining an interior volume, a liner located within the interior volume, an explosive disposed between the liner and the casing, and a reactive material disposed between the liner and the casing.

    摘要翻译: 成形装料包括限定内部容积的杯形壳体; 位于内部容积内的衬里; 设置在衬套和壳体之间的炸药; 以及设置在衬套和壳体之间的反应性材料。 一种在井眼内产生动态超平衡的方法,包括在井眼中设置穿孔枪; 并且引爆穿孔枪中的成形装料,其中成形装料包括限定内部容积的杯形壳体,位于内部容积内的衬套,设置在衬套和壳体之间的炸药以及设置在衬套之间的反应性材料 衬管和套管。