1) low permeability rock masses
低渗透岩体
1.
Advances in the research on saturated seepage flowin low permeability rock masses;
低渗透岩体饱和渗流研究进展
2) low permeability rock
低渗透岩石
1.
Experimental study on coupled flow through low permeability rock under confining pressure;
低渗透岩石在围压作用下的耦合渗流实验
2.
Non-Darcy flow of single-phase water through low permeability rock;
低渗透岩石的单相水非Darcy流
3.
The effect of fluid-solid coupling on the seepage in low permeability rocks was measured for sandstone from the Changqing oil field on an FDES-641 triaxial system.
为研究低渗透岩石的流固耦合渗流规律,采用FDES-641驱替评价系统对采自长庆油田的砂岩岩样进行实验和分析。
3) low-permeability sandstone
低渗透砂岩
1.
An experimental study on oil migration and accumulation in low-permeability sandstone;
低渗透砂岩石油运移及成藏特征模拟实验
2.
Based on the comprehensive geological study of Niu-20, Chun-41, Zhuang-74 and Daluhu low-permeability sandstone oil pools, the research content and method of the geological model on the reservoir heterogeneity of low-permeability sendstone oil pools in Shengli oil district were sumarized systematically in this paper.
该文在牛20、纯41、桩74、大芦湖等低渗透砂岩油藏地质综合研究的基础上,系统总结了胜利油区低渗透砂岩油藏储层非均质地质模型的研究内容和方法。
4) low permeability sandstone
低渗透砂岩
1.
Threshold pressure gradient of low permeability sandstone;
低渗透砂岩渗流启动压力梯度
2.
The poor producing degree and the economic benefit of the low permeability sandstone by vague injection-production is caused by changeful sedimentary microfacies and high intra-layer and plane heterogeneity in whole oil reservoir set.
针对陕北低渗透砂岩小油田因沉积微相多变,层内和层间非均质性强,整个油层组笼统注采开发采出程度低以及经济效益差等现状,通过对顺宁长12油藏充分利用岩芯分析和测井曲线等基础地质资料,加强沉积微相研究,开展油藏小层精细划分对比及小层砂体连通性分析,明确了主要注采小层在空间上的展布规律,为优化注水开发方案和选用先进注采配套工艺技术措施提供了比笼统注采更为精细的开发地质依据。
3.
The structural fractures in fractured low permeability sandstone reservoirs have great effect on displacement efficiency.
裂缝性低渗透砂岩油层中的构造裂缝对驱油效率有明显影响。
5) clay shale with low permeability
低渗透页岩
6) low-permeability rock
低渗透岩石
1.
Stress sensitivity characteristics of low-permeability rocks;
低渗透岩石压敏特征研究
补充资料:岩骨间低密度伪影
岩骨间低密度伪影
CT影像的伪影之一。在头部横断面层面CT影像中,两侧岩骨锥体之间的横行带状低密度区。又称岩骨间透明带(interpetrous lucency),亨氏暗区(Hounsfield dark area),亨氏伪影(Hounsfieldartifact)。是由于X线的线束硬化效应(beam-hardening effect)造成的伪影。该区两侧为突入的岩骨锥体,前方为枕骨斜坡,射线在穿透这些骨结构时较低能量的光子被大量吸收,使透射后的剩余光子的平均能量升高,即线束变硬。由于衰减系数极大地依赖于射线能量,因此当“硬化的”线束在继续穿经脑干等结构时,衰减系数显著下降,在影像上则形成低密度带影。由于这种伪影的存在,使岩骨锥体之间的结构显示不清,成为CT成像的一个限度。在现有CT设备X线管发射全能谱X线的情况下,这一限度是固有的和不可逾越的。只有使用单色X线束,才可从根本上避免这种现象。MR成像不存在这一限度,因此,对显示脑干区以及后颅结构和病变明显优于CT。
说明:补充资料仅用于学习参考,请勿用于其它任何用途。
参考词条