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采用高能激光进行射孔 被引量:1
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作者 S.batarseh 宁多全 闵家华 《测井与射孔》 2004年第3期76-80,共5页
常规射孔技术就是要建立一种从油藏通过水泥固封的套管流到井中的流动状态,聚能射孔弹的爆破力量被聚集、强化。形成一小束喷射流,穿透套管和水泥环而进入储层的岩石中。这个过程中,随着金属和碳末挤进射孔通道中,储层岩石的孔隙度... 常规射孔技术就是要建立一种从油藏通过水泥固封的套管流到井中的流动状态,聚能射孔弹的爆破力量被聚集、强化。形成一小束喷射流,穿透套管和水泥环而进入储层的岩石中。这个过程中,随着金属和碳末挤进射孔通道中,储层岩石的孔隙度和渗透率也随之降低.同时十分细小的粉末也堵住或降低孔喉的尺寸。结果,必须还得又费时又费成本地进行射后作业以减少流动限制。所以,应该开发一种替代的射孔方法,减少或消除对地层的损害。大大提高累积产量和总的经济回报。由油气技术研究院(GTI)领导的研究小组通过把高能激光应用到岩石样本上已经证实:此法不仅可以减轻对邻近地带的渗透率和孔隙度的损害。而且能使砂岩储层孔眼附近的渗透率提高到171%。井下采用这项技术射孔,其它的定向完井和增产措施不会损害储层。本文展示采用高能激光束对砂岩、灰岩和页岩的样本进行射孔的实验方法和结果。把网格形式应用到岩石样本上。在所射的孔道里和附近进行声速和渗透率的测量。此外。在试验前后都要分析岩石的矿物和性质。 展开更多
关键词 聚能射孔 渗透率 高能激光 孔喉 射孔方法 套管 完井 岩石样本 孔隙度 储层
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An Experimental Simulation of a Design Three-Port DC-DC Converter 被引量:1
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作者 Samir Al Sharif Ahmad Harb +1 位作者 Haibing Hu Issa batarseh 《Circuits and Systems》 2014年第10期238-251,共14页
Traditional DC-DC converter topologies interface two power terminals: a source and a load. The construction of diverse and flexible power management and distribution (PMAD) systems with such topologies is governed by ... Traditional DC-DC converter topologies interface two power terminals: a source and a load. The construction of diverse and flexible power management and distribution (PMAD) systems with such topologies is governed by a tight compromise between converter count, efficiency, and control complexity. The broader impact of the current research activity is the development of enhanced power converter systems suitable for a wide range of applications. Potential users of this technology include the designers of portable and stand-alone systems such as laptops, hand-held electronics, and communication repeater stations. High power topology options support the evolution of clean power technologies such as hybrid-electric vehicles (HEV’s) and solar vehicles. DC-DC converter is considered as an advanced environmental issue since it is a greenhouse emission eliminator. By utilizing the advancement of these renewable energy sources, we minimize the use of fossil fuel. Thus, we will have a cleaner and pollution free environment. In this paper, a three-port DC-DC converter is designed and discussed. The converter was built and tested at the energy research laboratory at Taibah University, Al Madinah, KSA. 展开更多
关键词 DC-DC CONVERTER POWER ELECTRONICS
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