三级装药多脉冲射孔技术  

Three-Stage Charge Multi-Pulse Perforating Technology

作　　者：董拥军 陈晓明 陈立雄 隋朝明 李斌 尚勇 DONG Yongjun;CHEN Xiaoming;CHEN Lixiong;SUI Chaoming;LI Bin;SHANG Yong(Tianjin Branch, China National Logging Corporation, Tianjin 300280, China)

机构地区：[1]中国石油集团测井有限公司天津分公司,天津300280

出　　处：《测井技术》2022年第3期362-366,共5页Well Logging Technology

摘　　要：常规复合射孔技术将聚能射孔与火药结合,在射孔的同时进行高能气体压裂,有效地破碎射孔孔道压实带;但其只装配了一级火药,火药燃烧产生的能量偏低,有效作用时间短,常规复合射孔效果受限于装药量和压力脉冲级数。三级装药多脉冲射孔技术通过增加火药级数,控制不同级次的火药燃速,形成多个高能气体压裂脉冲,压力峰值高,有效作用时间长。该技术提高了对近井带的改造程度,能实现井筒周边2 m以上造缝、延缝,增强了地层的渗流能力,为非常规油气开采提供了新的思路。Conventional compound perforating technology combines shaped energy perforating with gunpowder,and achieve high-energy gas fracturing along with the perforating to break perforation compacted zone effectively.However,it is only equipped with primary gunpowder,so the energy with gunpowder combustion and the effective action time is not enough.The effect of conventional compound perforating is limited by the quantity of explosives and pressure pulse stages.Three-stage charge multi-pulse perforating technology provides more high-energy gas fracturing pulses,with higher pressure peak and longer effective action time,by increasing the gunpowder stages and controlling the burning rate of different gunpowder.This technology improves the degree of stimulation of the near-wellbore zone,realizes and extends the length of fracture more than 2 meters.It enhances the permeability of the formation,and provides a new idea for unconventional oil and gas exploration.

关 键 词：非常规 聚能射孔 三级装药多脉冲射孔 常规复合射孔 

分 类 号：P631.84[天文地球—地质矿产勘探]