高能复合射孔技术及应用

High energy combined perforation technique and its application

高能复合射孔技术将射孔与压裂融为一体 ,用导爆索对射孔弹及复合固体推进剂同时点火 ,射孔弹沿不同相位爆轰射孔 ,推进剂爆燃产生的高压气体沿射孔孔眼压裂地层 ,在近井带形成的高导流孔缝网络可以大幅度增加渗流面积 ,大型地面水泥靶系列检测证实径向裂缝长达 2 .5m以上。 12 0 0多口井的现场应用证实 ,该技术增产、增注效果显著 ,安全可靠而且成本低。高能复合射孔技术体系由射孔器材研究及生产技术、地面检测技术、现场作业工艺、现代井下测试技术与大型优化设计分析软件 5个方面组成 ,将引起石油射孔的巨大进步和变革。

High energy combined perforation technique, which combines perforation and fracturing, simultaneously ignites the perforating bullets and the solid propellant with the explosive fuse. The bullets explode and perforate in different phases, and the high pressure gas coming from the detonation of propellant fractures the formation along the perforation tunnels. The fissure network of high conductivity near wellbore can increase the flow area greatly. A series of tests on large scale surface cement target have certified that the radial fracture lengths are over 2.5m. Oil field application in more than 1200 wells shows that this technique evidently improves production and injection, with low cost and safety operation. The system of high energy combined perforation technique is composed of perforation equipment, production technology, surface detection technique, oil field operation technology, modern downhole testing and advanced software of optimization design and analysis, and it will made tremendous progress and innovation in oil perforation technique.