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引言为适应油田大直径射孔套管的射孔要求(7英寸,9~5/8英寸)又不改变弹型、不改变弹体结构,仍然采用已经定型投产的无枪身射孔弹(如67—11型、73—400型、73—700型)。在现有的联炮工艺基础上改变联炮架结构形式,用原双钢筋炮架重叠(即组装一套四钢筋式联炮架),方法简易,效果显著,保证轻便的无枪身射孔作业实施。大庆油田大直径的射孔套管,在三肇地区的边探井较多,射孔深度分别为1800～
Introduction In order to adapt to the perforation requirements (7 in., 9-5 / 8 in.) Of large-diameter perforation casing in oilfields without changing the projectile shape and without changing the projectile structure, a gun-less projectile (s) Such as 67-11 type, 73-400 type, 73-700 type). On the basis of the existing artillery craft, the structure of the artillery gun frame is changed. The original double steel bar artillery frame is overlapped (that is, a set of four steel bar artillery frames are assembled). The method is simple and the effect is remarkable. The lightweight and gun-free perforating Job implementation. Large diameter perforation casing of Daqing Oilfield has more exploration wells in Sanzhao area with perforation depth of 1800 ~