摘要
新井投产过程中,低孔隙度、低渗透率油藏对射孔工艺要求较高。目前常用射孔技术普遍存在射孔压实带污染地层、射孔弹能效利用率不高等问题。如何有效解决这些问题成为射孔工艺创新攻关难点。采用后效集束射孔技术,通过优化射孔工艺,利用初次高速射流引起的涡流场引力将后效体高能粒子拽入到孔道,在粉尘效应作用下产生局部灼热爆燃,继而迅速完成整个孔道爆轰爆炸,达到提高射孔穿深,扩容射孔孔道,实现油水井增产增注的目的。结果表明,后效集束射孔技术在增加射孔穿深的同时解除射孔压实带污染问题,有效改善射孔完井效果。
The requirement of the new wells in low-porosity low-permeability reservoirs to perforating technology is high. At present,there is a widespread perforation technology in the area of perforation compaction, and the efficiency is not high. The existing perforating technologies are all of the shortcomings of formation pollution in compaction zone and low perforating bullet energy utilization ratio. How to effectively overcome these shortcomings is a difficult problem in the process of perforation. The aftereffect cluster perforating technology uses the gravity of the eddy current field caused by initial high-speed jet dragging the high energy particles of aftereffect body into the perforated hole, the energetic particles are heated locally under the action of dust effect and then explodes rapidly in the whole hole to deepen and widen the hole, so as to realize the production and injection increasing of oil wells and water injection wells. The application results show that the aftereffect cluster perforating technology can not only increase perforation depth but also remove the pollution of perforation compaction zone, so as to improve the effect of the perforating completion.
出处
《石油工业技术监督》
2015年第10期39-41,共3页
Technology Supervision in Petroleum Industry
关键词
后效集束射孔技术
压实带
后效体
粉尘效应
aftereffect cluster perforating technology
compaction zone
aftereffect body
dust effect
