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连续管冲盐解堵工艺在英西的应用
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作者 陈柯桦 盛国青 +3 位作者 路彦森 朱峰 徐惠军 陈微熙 《石油科技论坛》 2017年第5期39-43,共5页
英西地区是近几年青海油田增储上产的重点区域,但由于地层含盐且出盐量大,盐结晶速度快,很多油井投产后因生产通道堵塞致使产量急剧下降,给勘探开发工作带来很大阻力。针对这一难题,以"下得去、出得来、伤害小"为原则,制定了... 英西地区是近几年青海油田增储上产的重点区域,但由于地层含盐且出盐量大,盐结晶速度快,很多油井投产后因生产通道堵塞致使产量急剧下降,给勘探开发工作带来很大阻力。针对这一难题,以"下得去、出得来、伤害小"为原则,制定了以旋流喷射工具冲盐+旋转喷射工具扩眼+热水溶盐为主,螺杆钻具钻磨、扶正喷射等为辅的多种连续管冲盐解堵方案,同时设计加工了旋流喷射工具、旋转喷射工具、尖状工具等多种冲盐工具,并在施工中不断优化工艺参数,形成连续管冲盐解堵工艺系列技术,成功应用近50井次,为高压高产油井的正常生产提供了有力保障。 展开更多
关键词 连续管 盐结晶 冲盐解堵 喷射洗井 英西地区
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In vitro induction of mouse meningeal-derived iPS cells into neural-like cells 被引量:2
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作者 XU Jing WANG Hao +4 位作者 LIANG Tao CAI Xiangsheng RAO XiuRong HUANG ZhenBo sheng guoqing 《Chinese Science Bulletin》 SCIE EI CAS 2011年第15期1556-1561,共6页
Previous research has shown that mouse embryonic stem (ES) cells can be induced to form neural cells in adherent monocultures.In this study,pluripotent stem (iPS) C5 cells derived from meningeal membranes were convert... Previous research has shown that mouse embryonic stem (ES) cells can be induced to form neural cells in adherent monocultures.In this study,pluripotent stem (iPS) C5 cells derived from meningeal membranes were converted successfully into neural-like cells using the same protocol generally used for ES cells.Meningeal-iPS C5 cells were induced to express neural markers Sox1,Sox3,Pax6,Nestin and Tuj1 and to reduce the expression of ES markers Oct4 and Nanog during neural differentiation,and can be differentiated into Pax6 and Nestin positive neural progenitors,and further into neuronal,astrocytic,and oligodendrocytic cells.In vitro differentiation of iPS cells into patient-specific neural cells could serve as a model to study mechanisms of genetic diseases and develop promising candidates for therapeutic applications in dysfunctional or aging neural tissues.Meningeal cells express a high level of the embryonic master regulator Sox2,allowing them to be reprogrammed into iPS cells more easily than other somatic cells. 展开更多
关键词 神经细胞分化 细胞粘附 膜细胞 iPS 体外诱导 NESTIN 衍生
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