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中文摘要：
随着油气井勘探开发的深入,低孔、低渗、致密岩性的非常规油气层在油气储量中占较大的比例,由于其储层性质差,勘探开发难度大,采用常规射孔很难取得理想的效果。StimGun复合射孔技术是在射孔枪起爆后,推进剂燃烧产生高能气体,高能气体进入射孔孔道并在射孔孔眼周围形成多径向裂缝,从而沟通了天然裂缝,改善了油气流动通道,提高渗流能力。介绍了该技术的工作原理和技术优势,并通过现场试验、总结和完善,形成了一套满足于不同地质条件的、集安全施工设计和作业效果评价为一体的stimgun复合射孔技术。该技术成功应用于四川LG区块的射孔作业中,能有效的控制裂缝高度,达到清楚地层污染而又不出水的效果,对地透气性地层具有较好的改造作用,取得较好的作业效果。
英文摘要：
With further exploration and development of oil and gas wells,it is found that the unconventional oil-gas bed occupies a major proportion in gas reserves.However,it is difficult to obtain satisfactory control by using conventional perforation technology because of its characteristics of low pore,low permeability and compact lithology in the unconventional oil-gas bed.The StimGun tech（synergize compound perforation） is described as following： after the perforating gun is fired,propellant burns with high-energy gas produced.Then the high-energy gas enters the perforating hole and forms multi-path cracks around perforated hole,which connects with the natural cracks and improves the permeability of oil and gas bed.The application and advantage of StimGun are introduced.The Stimgun is successfully applied in Sichuan LG oilfield.It can control the fracture heights effectively and remove contamination formation with no water producing,and it is also a great help to increase productivity of the oil-gas bed with low permeability.
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