内置式复合射孔器的改进与应用效果

Application and Improvement of the Built-in Composite Perforator

内置式复合射孔器主要分为压垫密封和盲孔密封2种类型。压垫密封复合射孔器的密封胶垫粘堵在泄压通孔上，在运输、储存和施工过程中密封胶垫被破坏会发生井下事故。通过试验证明，射孔弹产生的爆轰压力可迅速冲开密封胶垫，增效药燃烧后产生的高能气体从射孔盲孔和泄压盲孔同时排出。盲孔密封复合射孔器的泄压盲孔在射孔枪未起爆穿孔前承受一定的压力，点火起爆后，压力先从射孔盲孔排泄，方向正对射孔孔道，枪体内压力达到某一设定值时，泄压盲孔才裂开泄压。这种射孔器增效药的能量不能迅速排泄，在射孔枪内损失严重，造成枪体涨径过大。高效压冲式复合射孔器属于内置式复合射孔器，它采用小直径泄压盲孔，应用液体拒传磁电雷管，克服了以往内置式射孔器使用中存在的不利影响，消除了安全隐患，同时使增效药的能量得到最大化利用。

The built-in composite perforator is mainly classified into two types pressure pad seal and blindhole seal. The sealing pads in the former are sticked in the decompression holes. To ensure sealing effect, each perforation gun should be experimented with external pressure tests after the sticked seal. There might be downhole perforation accidents if the sealing pads are destroyed in transportation, storage and perforation jobs. Experiments show that the detonation pressure generated by the perforators can rapidly blast the sealing pads aside. The high energy gas produced from synergistic explosive burning is removed through perforating blind holes and decompressing blind holes. The decompressing blind holes withstand some pressure before the perforators are not detonated. After detonating, the pressure first releases through perforating blind holes, and the releasing gas directs towards the perforating holes. When the internal pressure in the gun is up to a given value, the decompressing blind holes start spliting and decompressing. Because the energy of the synergistic explosive can not release rapidly and consume greatly, the gun diameter enlarges seriously. Thereby, the well thickness and diameter of the decompressing blind holes are very crucial. The high impact composite perforator is in fact a kind of built-in composite perforator, which uses small diameter decompressing blind holes and liquid to refuse to convey magnetoelectricity detonator. So, this perforator is safe and reliable, and maximized the synergistic explosive energy