1)desertification[英][d?,z?:t?f?'ke??n][美][d?'z?t?f?'ke??n]砂化
1.An analysis on desertification and degeneration of rearing farm for Antheraea pernyi and a basic conception to promote sericulture development;柞蚕场砂化、退化成因分析及柞蚕业发展的基本构想
2)magnesia hydration镁砂水化
3)reduced activating places碎化砂矿
4)sandstone acidizing砂岩酸化
1.The mechanisms involved in sandstone acidizing reactions and leading to amorphous silica precipitation(ASP) are discussed in brief.讨论了砂岩酸化中产生水化硅沉淀的反应机理。
2.This paper briefly reviews the kinetic mechanisms of sandstone acidizing reaction, and introduces the recent research achievements abroad in this aspect.本文简要回顾了砂岩酸化反应动力学的历程。
3.Therefor, it makes great senses to study the reservior damage of sandstone acidizing.因而开展砂岩酸化对储层伤害的研究有着重要的意义,目前涉及这方面的研究主要以室内实验评价为主,但实验方法只能给出定性或半定量的结论。
5)soil liquefaction砂土液化
1.Aseismic reliability of traversing pipelines based on soil liquefaction analysis;基于砂土液化分析的穿越管道抗震可靠性
2.The tests made before and after the construction show that this technology has a good effect on reinforcing the foundation and eliminating the soil liquefaction.主要介绍了地基强夯技术在粤海铁路运输大楼高填方、松散厚砂层地况下的施工方案及施工技术要点,并通过强夯前后的检测,说明强夯法加固填土地基,消除砂土液化可获得良好的效果,为同类工程的方案设计及施工提供参考。
3.Finally, by means of this model, the process and phenomena of the soil liquefaction is exp.最后 ,利用该模型从土体结构破坏的角度解释了砂土液化的过程和现
英文短句/例句
1.Laboratory tests on flow characteristics of liquefied and post-liquefied sand砂土液化及液化后流动特性试验研究
2.Eliminating Liquefaction of Sandy Soil and Improving Bearing Capacity of Single Pile with Vibro-squeezing Sand Pile振动挤密砂桩消除砂土液化和提高单桩承载力
3.Analysis on Sand Seismic Liquefaction Prediction Based on the Support Vector Machine基于支持向量机的砂土液化预测分析
4.The Influences of the Vibration Frequencies on Liquefaction Strength of Saturated Sands振动频率对饱和砂土液化强度的影响
5.Effect of fines content on liquefaction properties of saturated silty sands细粒含量对饱和砂土液化特性的影响
6.The Development of Sandy Liquefaction Evaluation with Excel VBA砂土液化评价的Excel VBA开发
7.Research on GIS-Based Visual Evaluation Information System of Sand Liquefaction;基于GIS的砂土液化可视化评价信息系统研究
8.Prediction model of sand liquefaction based on chaos optimization neural networks基于混沌优化神经网络的砂土液化预测模型
9.Research on Physical Fundamentals and Constitutive Model of Large Post-Liquefaction Deformation of Sand;砂土液化后大变形的物理机制与本构模型研究
10.Study on Reliability-Based Procedure for Evaluating Liquefaction Potential;基于可靠性理论的砂土液化判别方法研究
11.Research on Assessment of Sand Liquefaction Potential Based on Compensative Fuzzy Neural Network;基于补偿模糊神经网络的砂土液化势评价研究
12.Application of the light well-point dewatering combining with dynamic consolidation method to elimination of liquefaction of sand轻型井点降水+强夯法在消除砂土液化中应用
13.Application of Flat Dilatometer Test in the Sand Liquefaction Estimation扁铲侧胀试验在砂土液化判别中的应用研究
14.Analysis on sandy soil liquefaction test of bridge foundation site for Jingzhou yangtze river bridge荆州长江大桥桥基场地砂土液化试验分析
15.A preliminary study on gradation division of sand liquefaction by SPT method in the Panjin City precincts用标贯法对盘锦城区砂土液化进行等级分区
16.Discriminant analysis model for prediction of sand soil liquefaction during earthquake基于判别分析法的地震砂土液化预测研究
17.The Shaking Table Experimental Study on Liquefiable Sand Soil Improved by Granular Sand Pile;散体材料砂桩加固液化砂土的振动台试验研究
18.The Shaking Table Experimental Study on Liquefiable Sand Soil Improved by Pile;桩体加固液化砂土的振动台试验研究
相关短句/例句
magnesia hydration镁砂水化
3)reduced activating places碎化砂矿
4)sandstone acidizing砂岩酸化
1.The mechanisms involved in sandstone acidizing reactions and leading to amorphous silica precipitation(ASP) are discussed in brief.讨论了砂岩酸化中产生水化硅沉淀的反应机理。
2.This paper briefly reviews the kinetic mechanisms of sandstone acidizing reaction, and introduces the recent research achievements abroad in this aspect.本文简要回顾了砂岩酸化反应动力学的历程。
3.Therefor, it makes great senses to study the reservior damage of sandstone acidizing.因而开展砂岩酸化对储层伤害的研究有着重要的意义,目前涉及这方面的研究主要以室内实验评价为主,但实验方法只能给出定性或半定量的结论。
5)soil liquefaction砂土液化
1.Aseismic reliability of traversing pipelines based on soil liquefaction analysis;基于砂土液化分析的穿越管道抗震可靠性
2.The tests made before and after the construction show that this technology has a good effect on reinforcing the foundation and eliminating the soil liquefaction.主要介绍了地基强夯技术在粤海铁路运输大楼高填方、松散厚砂层地况下的施工方案及施工技术要点,并通过强夯前后的检测,说明强夯法加固填土地基,消除砂土液化可获得良好的效果,为同类工程的方案设计及施工提供参考。
3.Finally, by means of this model, the process and phenomena of the soil liquefaction is exp.最后 ,利用该模型从土体结构破坏的角度解释了砂土液化的过程和现
6)chemical sand control化学防砂
1.Test study of chemical sand control for moderate shallow fine siltstone water well;中浅层细粉砂岩注水井化学防砂试验研究
2.Application of HY new chemical sand control material to Linfanjia OilfieldHY新型化学防砂材料在林樊家油田的应用
3.The technologic principles and the field results of applying chemical sand control methods in Jingzhou oil fields,Liaohe,are presented briefly mainly for steam enhanced heavy oil production wells in 15 year's exploitation.简介了锦州油田投入开发15年来不同时期主要用于热采稠油井的化学防砂技术原理和使用效果:以长效黏土稳定剂为主的稀油油藏固砂剂FSH-901(1992~1995,施工136井次,有效率78。
延伸阅读
油井防砂和清砂 对疏松油层进行层内胶固，在井筒内下筛管防止油层砂进入井内，以保证油井、注水井的正常生产，称防砂。 防砂 胶结疏松的砂岩颗粒随油、水进入井筒或携带至地面，会冲蚀、磨损、堵塞深井泵和管线以及地面设备,或沉积于井底,堵塞油层，使油井减产或停产；甚至油层坍塌，挤毁套管，导致油井大修或报废。采油时应根据生产动态、砂样分析及声波测井等资料，及时了解出砂原因、层位及性质，采取有效的防砂措施。防砂措施有筛管滤网和化学胶固两类，前者适用于各种完井方式，应用较广，后者主要用在套管射孔完成的井。通过试油、试采已证实出砂的油层，应考虑防砂完井。 筛管滤网防砂 也称机械防砂，将多缝筛管固定在带孔的钢管上，下至出砂层段并用携砂液将一定粒径的砂粒循环填充于筛管外，靠管外砂粒所形成的桥拱，滤阻油层出砂。对油层单一、无水、气夹层的井，可采用先期防砂。即油层部分用扩眼钻头扩眼后，再下入筛管填砂（见图）。对多层合采或有水、气夹层的井，用射孔完井。清洗套管和炮眼后，再在套管内下筛管填砂。筛管的结构，从割缝到外包金属网或预填砾石，发展到用有机或无机材料预制滤管。目前多用梯形截面的不锈钢丝点焊成强度高、渗滤面大、耐腐蚀的金属绕丝滤管。此法要求根据砂样粒度分析资料，选定筛管缝宽及填入砂粒的直径。 化学防砂 向出砂油层注入一定量的化学胶结剂，将油层砂子胶固在一起。常用的胶结剂有树脂类（如酚醛树脂、环氧树脂等），有时也用水泥类材料。要求胶结剂在固结时体积收缩，或加入增孔剂，造成一定的渗透性，以尽量减少对产量的影响。对已经大量出砂的油层，用下列方法形成有渗透性的人工井壁：①将砂与胶结剂按比例混合后,挤入地层；②预先向出砂层填砂,再将原料如甲醛和苯酚以及固化剂按序挤入地层，在地层条件下合成树脂；③石英砂外包一层树脂，在未完全固化前挤入地层，在油层温度条件下固化；④用N2作载体把SiCl4蒸气引入油层，使之分解,析出的Si对疏松砂子起胶结作用。化学防砂的优点是可用于同井多油层防砂，不缩小井眼；缺点是成本较高，易降低出砂层的生产能力，对于油井先期防砂或注水井防砂，效果较好。 清砂 清除井底沉砂，一般下入油管，用洗井液循环冲洗，带出地面。炮眼内积砂，用专门的洗井封隔器分段冲洗。井下深井泵等设备内的积砂，须将设备起出地面，检查清理。 参考书目 T. O. Allen & A.P.Roberts, Production Opera- tions,Vol.2,2nd ed.,Oil & Gas Consultants Inter-national,Tulsa,1982.
