公开(公告)号：US5701964A

公开(公告)日：1997-12-30

申请号：US651229

申请日：1996-05-22

申请人： Jerry L. Walker ,  James P. Lawson ,  Bennie C. Gill

发明人： Jerry L. Walker ,  James P. Lawson ,  Bennie C. Gill

IPC分类号： E21B43/117 ,  E21B43/116

CPC分类号： E21B43/117

摘要： A through-tubing perforating gun and method is provided. The assembly comprises an elongated carrier strip, a plurality of perforating charges, and means for connecting the plurality of charges to the carrier strip. Each of the charges has a focal axis along which a shaped charge explosion occurs in a firing direction when the charge is actuated for use in perforating the casing wall, a cross-section that fits within a circle defined by the smallest inner diameter of the well tubing through which the assembly is intended to pass, and a detonating cord receiving means. The means for connecting the plurality of charges to the carrier strip is such that: the cross-sections of the plurality of charges substantially overlap along the line extending parallel to the length of the carrier strip, whereby the overall cross-section of the assembly fits within a circle defined by the smallest inner diameter of the well tubing through which the assembly is intended to pass; and at least one of the plurality of charges has its focal axis angularly displaced at least about 30 degrees relative to the focal axis of the next adjacent perforating charge; and the focal axis of any one of the plurality of perforating charges is angularly displaced from the focal axis of the next adjacent perforating charge no more than about 80 degrees. The means for connecting can comprise a mounting clip. More preferably, the clip is mountable to the strip in two orientations. Further, the clip is adapted such that a perforating charge is mountable to the clip in two orientations. Thereby, the clip provides a plurality of charge mounting orientations.

摘要翻译： 提供了一种通管穿孔枪和方法。 组件包括细长的载体带，多个穿孔电荷，以及用于将多个电荷连接到载体带的装置。 每个电荷具有焦轴，当致动充电用于穿孔套管壁时，沿着烧焦方向发生成形电荷爆炸的焦点轴线，该横截面适合于由井的最小内径限定的圆 组件旨在通过的管道，以及引爆绳索接收装置。 用于将多个电荷连接到载体带的装置是这样的：多个电荷的横截面基本上沿着平行于承载带的长度延伸的线重叠，由此组件的整个横截面适合 在由组件要通过的井管的最小内径限定的圆内; 并且所述多个电荷中的至少一个电荷具有相对于下一相邻穿孔电荷的焦轴至少约30度的角度位移的焦点轴; 并且所述多个穿孔电荷中的任何一个的焦点轴线从所述下一个相邻穿孔电荷的焦点轴线成角度地移位不超过约80度。 用于连接的装置可以包括安装夹。 更优选地，夹子可以以两个取向安装到条带上。 此外，夹子适于使得穿孔装料可以两个方向安装到夹子上。 因此，夹具提供多个充电安装取向。