维普中文期刊产品整合服务
4篇 您的检索式:作者名="Dave Freeman"
    题名 作者 年代 出处 被引量
1Effect of stress sensitivity on displacement efficiency in CO_2 flooding for fractured low permeability reservoirs显示文摘Carbon dioxide flooding is an effective means of enhanced oil recovery for low permeability reservoirs.If fractures are present in the reservoir,CO2 may flow along the fractures,resulting in low gas displacement efficiency.Reservoir pore pressure will fluctuate to some extent during a CO2 flood, causing a change in effective confining pressure.The result is rock deformation and a reduction in permeability with the reduction in fracture permeability,causing increased flow resistance in the fracture space.Simultaneously,gas cross flowing along the fractures is partially restrained.In this work,the effect of stress changes on permeability was studied through a series of flow experiments.The change in the flowrate distribution in a matrix block and contained fracture with an increase in effective pressure were analyzed.The results lead to an implicit comparison which shows that permeability of fractured core decreases sharply with an increase in effective confining pressure.The fracture flowrate ratio declines and the matrix flowrate ratio increases.Fracture flow will partially divert to the matrix block with the increase in effective confining pressure,improving gas displacement efficiency.Wang Rui Yue Xiang'an Zhao Renbao Yan Pingxiang Dave Freeman 2009Petroleum Science2009,6,3:4
2PMBus:电源系统的国际语言显示文摘本文将介绍全新的电源管理通信标准PMBus规范的第I与II部分。第I部分将重点讲述一般要求、传输接口与电气接口,并描述基于SMBus的物理层。第II部分将详细阐述电源服务控制器或系统主机以及电源设备之间的数据控制语言及其通信格式。此外,本文还将介绍PMBus在市场上的初期实施情况与实施领域。Dave Freeman 2006电子设计应用2006,,7:1
3Microglial Activation is Required for Aβ Clearance After Intracranial Injection of Lipopolysaccharide in APP Transgenic Mice显示文摘Donna L. Herber Mary Mercer Lisa M. Roth Keisha Symmonds Jessica Maloney Nedda Wilson Melissa J. Freeman Dave Morgan Marcia N. Gordon 2007Journal of Neuroimmune Pharmacology2007,,:1
4配给能源采集供电:无线传感器节点的功率约束显示文摘让周遭的系统能够自动感测环境变化并做出反应,势必将对于人类的生活造成重大改变。无线传感器网络是多个分布式传感器实作(节点)组成的系统,能够共同透过相互无线通信的方式响应实体变化。本文将重点介绍节点的最新进展,并推广对于系统层级设计方法的需求。Sriram Narayanan Dave Freeman 2011电子与电脑2011,,11:0
返回顶部 每页显示:
共1页 首页 上一页 第1页 下一页 末页 /1 跳转

网站首页 | 关于我们 | 联系我们 | 产品服务 | 客服中心 | 广告服务 | 版权声明 | 网站联盟 | 友情链接 | 售卡网点

版权所有© 渝B2-20050021-1 渝公网安备 50019002500403号 违法和不良信息举报中心

互联网出版许可证 新出网证(渝)字10号 全国400电话 - 免长途话费