Explosive system for casing damage repair

    公开(公告)号:US06536349B2

    公开(公告)日:2003-03-25

    申请号:US09817369

    申请日:2001-03-21

    IPC分类号: F42B3087

    CPC分类号: F42B3/00

    摘要: An explosive system is disclosed which may be used in repair of damaged casing. In a described embodiment, an explosive system includes a flexible elongated tubular container with a liquid explosive disposed within the container. As an alternative, the liquid explosive may be flowed into a wellbore without being retained within a container. The liquid explosive is detonated in the wellbore, thereby fragmenting the damaged casing and forcing it out into a formation surrounding the wellbore.

    Pipe conveyed explosive with self contained actuation
    2.
    发明授权
    Pipe conveyed explosive with self contained actuation 失效
    管道用自包含致动传送炸药

    公开(公告)号:US07117956B2

    公开(公告)日:2006-10-10

    申请号:US10886256

    申请日:2004-07-07

    IPC分类号: E21B43/11 E21B29/10

    CPC分类号: E21B29/02

    摘要: A pipe conveyed charge system, for example a junk shot, having a self-contained activating charge which may be activated by mechanical force applied through the pipe. The initiating charge is pressure actuated, and fluid pressure in the pipe is used to fire the charge. The system includes a circulating crossover coupling an explosive charge to a pipe string and including circulating ports directing fluid flow downhole to clear debris from the borehole. A ball, or other blocking material, is conveyed down the drill pipe to block circulating ports to facilitate raising pressure in the pipe to a sufficient level to fire the activating charge.

    摘要翻译: 管道传送的充电系统,例如垃圾枪,具有独立的激活电荷,其可以通过通过管施加的机械力而被激活。 启动充气是压力启动的,并且管道中的流体压力用于起火。 该系统包括将爆炸装料连接到管柱并包括引导井下的流体流动以清除钻孔中的碎屑的循环端口的循环交叉。 球或其他阻挡材料沿着钻杆向下传送以阻止循环端口,以便于将管道中的压力提高到足够的水平以起动激活装料。

    Apparatus and method for severing pipe utilizing a multi-point initiation explosive device
    3.
    发明授权
    Apparatus and method for severing pipe utilizing a multi-point initiation explosive device 有权
    使用多点起爆装置切断管道的装置和方法

    公开(公告)号:US07104326B2

    公开(公告)日:2006-09-12

    申请号:US10736123

    申请日:2003-12-15

    IPC分类号: E21B29/02 E21B43/11

    CPC分类号: E21B29/02

    摘要: A system and method for making and using a multi-point initiation explosive device that produces an enhanced pressure wave for severing tubing, pipe or casing in an oil or gas well. At least two opposed initiators initiate a column of explosive material from opposite ends, thereby generating opposing pressure waves propagating toward a midpoint between the initial initiators. A shaped-charge assembly with a liner located at the midpoint initiates immediately prior to the arrival of the opposing pressure waves and forms a fast moving jet to pre-score the target pipe prior to the arrival of the pressure pulse propagating from the initial detonations.

    摘要翻译: 一种用于制造和使用多点起爆爆炸装置的系统和方法,其产生用于在油井或气井中切断管道,管道或套管的增强的压力波。 至少两个相对的引发剂从相对端引发一列爆炸性材料,从而产生朝向初始引发剂之间的中点传播的相对的压力波。 具有位于中点处的衬垫的成形装料组件在相对的压力波到达之前立即启动,并形成快速移动的射流,以在从初始爆炸传播的压力脉冲的到达之前对目标管道进行预分。