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    Impermeable and composite perforating gun assembly components
    1.
    发明授权
    Impermeable and composite perforating gun assembly components 有权
    不透水和复合射孔枪组件

    公开(公告)号：US06422148B1

    公开(公告)日：2002-07-23

    申请号：US09633163

    申请日：2000-08-04

    申请人： Zheng Rong Xu ,  Manish Kothari ,  Robert A. Parrott ,  Haoming Li

    发明人： Zheng Rong Xu ,  Manish Kothari ,  Robert A. Parrott ,  Haoming Li

    IPC分类号： F42B3087

    CPC分类号： E21B43/117

    摘要： A perforating gun assembly that includes at least one component that is constructed from a composite material and that is impermeable to wellbore fluids. The components may include the outer carrier and/or loading tube of a perforating gun, the connecting tubing of a gun release mechanism, and the gun connector used to attach adjacent perforating guns. The composite material is designed to be very brittle under dynamic impact. The component is made impermeable to wellbore fluids by including an impermeable liner therein. The impermeable liner can be bonded to the inner or outer surface of the component or can be embedded within the component. Since it is brittle under dynamic impact, the composite component shatters into small pieces upon detonation of the perforating gun.

    摘要翻译： 一种穿孔枪组件，其包括至少一个由复合材料构成并且不能渗透流体的部件。 部件可以包括射孔枪的外部载体和/或加载管，枪释放机构的连接管和用于附接相邻射孔枪的枪连接器。 复合材料设计为在动态冲击下非常脆弱。 该组件通过在其中包括不透水衬垫而使井眼液体不透水。 不透水衬里可以结合到组件的内表面或外表面，或者可以嵌入在组件内。 由于在动态冲击下是脆性的，所以复合组件在穿孔枪爆炸时会碎成碎片。

    Method and Apparatus for Orienting Perforating Devices
    4.
    发明申请
    Method and Apparatus for Orienting Perforating Devices 有权
    用于定向穿孔装置的方法和装置

    公开(公告)号：US20080264639A1

    公开(公告)日：2008-10-30

    申请号：US11425876

    申请日：2006-06-22

    申请人： Robert A. Parrott ,  David Mills ,  Cynthia L. Hickson ,  Jerry D. Campbell

    发明人： Robert A. Parrott ,  David Mills ,  Cynthia L. Hickson ,  Jerry D. Campbell

    IPC分类号： E21B43/118

    CPC分类号： E21B43/117 ,  E21B17/05 ,  E21B17/1057 ,  E21B43/1185 ,  E21B43/119 ,  E21B47/024

    摘要： The present invention provides an apparatus and method of orienting perforating gun strings conveyed on a tool string. One embodiment of the present invention provides an orienting weight provided in a portion of the perforating device, such as the shaped charge, the loading tube or the gun housing. An adapter is provided intermediate the tool string that facilitates conveyance of the gun string downhole. Additionally, the adapter enables the gun string to rotate independent of the tool string.

    摘要翻译： 本发明提供了一种定向在工具串上传送的穿孔枪串的装置和方法。 本发明的一个实施例提供了一种定向重物，其设置在穿孔装置的一部分中，例如成形装药，装载管或枪壳体。 在工具串之间设置有一个适配器，便于枪管在井下的传送。 另外，适配器可使枪串独立于工具串旋转。

    Method and apparatus for coupling explosive devices
    6.
    发明授权
    Method and apparatus for coupling explosive devices 有权
    用于联接爆炸装置的方法和装置

    公开(公告)号：US06397752B1

    公开(公告)日：2002-06-04

    申请号：US09481913

    申请日：2000-01-12

    申请人： Wenbo Yang ,  Robert A. Parrott

    发明人： Wenbo Yang ,  Robert A. Parrott

    IPC分类号： C06C504

    CPC分类号： E21B43/1185

    摘要： A gun system in one arrangement includes a first carrier including a detonating cord and a second carrier including a detonating cord. An adapter couples the first and second carriers, with the adapter including an explosive coupled to the detonating cord of one of the first and second carriers. The explosive is positioned in a reduced housing portion of the adapter. The reduced housing portion of the adapter has a first outer diameter less than an inner diameter of the first carrier to provide a predetermined annular space between the reduced adapter portion and the inner diameter of the first carrier. At least one of the detonating cords in the first and second carriers is attached to a retainer element, and the retainer element is placed in close proximity to the explosive to maintain an axial position of the detonating cord to reduce separation between the detonating cord and the explosive. In addition, the explosive is placed some axial distance away from sensitive elements in the adapter, such as sealing elements and connector elements, to protect the sensitive elements from detonation of the explosive.

    摘要翻译： 一种装置中的枪系统包括包括引爆绳的第一载体和包括引爆绳的第二载体。 适配器将第一和第二载体连接，适配器包括联接到第一和第二载体之一的引爆绳的爆炸物。 炸药定位在适配器的减小的壳体部分中。 适配器的减小的壳体部分具有小于第一载体的内径的第一外径，以在减小的适配器部分和第一载体的内径之间提供预定的环形空间。 第一和第二托架中的至少一个引爆绳附接到保持器元件，并且保持器元件被放置在紧邻炸药的位置，以保持引爆绳的轴向位置，以减少引爆绳和 爆炸性 此外，炸药被放置在适配器中的敏感元件（例如密封元件和连接器元件）的一些轴向距离处，以保护敏感元件免于爆炸物的爆炸。

    Perforating gun having a plurality of charges including a corresponding plurality of exploding foil or exploding bridgewire initiator apparatus responsive to a pulse of current for simultaneously detonating the plurality of charges
    7.
    发明授权
    Perforating gun having a plurality of charges including a corresponding plurality of exploding foil or exploding bridgewire initiator apparatus responsive to a pulse of current for simultaneously detonating the plurality of charges 失效

    公开(公告)号：US5505134A

    公开(公告)日：1996-04-09

    申请号：US220071

    申请日：1994-03-29

    申请人： James E. Brooks ,  Nolan C. Lerche ,  Clifford L. Aseltine ,  Kenneth E. Rozek ,  Robert A. Parrott

    发明人： James E. Brooks ,  Nolan C. Lerche ,  Clifford L. Aseltine ,  Kenneth E. Rozek ,  Robert A. Parrott

    IPC分类号： E21B43/1185 ,  F42D1/02 ,  F42D1/045 ,  F42D1/05 ,  F42C19/12

    CPC分类号： F42D1/045 ,  E21B43/1185 ,  F42D1/02 ,  F42D1/05

    摘要： A perforating apparatus adapted to be disposed in a wellbore includes a plurality of shaped charges, an electrical current carrying conductor, and a plurality of exploding foil or exploding bridgewire initiators disposed, respectively, between the plurality of charges and the current carrying conductor for simultaneously detonating thereby simultaneously detonating all of the plurality of shaped charges of the perforating apparatus in response to a current flowing in the conductor. Each of the shaped charges include a new secondary explosive primer disposed in the apex of the charge for detonating in response to a detonation of the exploding foil or exploding bridgewire initiator. The electrical conductor may include a flat cable having a plurality of such initiators spaced apart at predetermined intervals along the cable and adapted to wrap helically around the perforating apparatus until each of the initiators abut against a shaped charge of the plurality of charges in the perforating apparatus. In an alternate embodiment, the electrical current carrying conductor may include a flat sheet having a specific length and width and including a plurality of such initiators. The flat sheet is adapted to wrap around the entire circumference of the perforating apparatus until each of the initiators in the sheet abut against a shaped charge of the plurality of charges in the perforating apparatus. The current in the conductor may originate from a compressed magnetic flux (CMF) current pulse generator or from a charging capacitor of a conventional system including one or more charging capacitors and associated discharge switches. When the perforating apparatus includes a first and second perforator separated by an adaptor, the adaptor includes a pressure bulkhead adapted to seal the first perforator from the second perforator, an explosive disposed in contact against one side of the bulkhead and a piezoelectric ceramic disposed in contact against the other side of the bulkhead.