渤海湾盆地石油地质储量和产量增长趋势的预测

渤海湾盆地的石油地质储量发现过程具有明显的渐进性、阶段性和长期性，石油产量的增长也具有一定的起伏性，用一个周期的单旋回哈伯特模型难以预测其发展趋势。通过分析渤海湾盆地的勘探开发历程，结合新一轮常规油气资源评价的结果，分别采用4个和3个哈伯特旋回拟合石油地质储量发现和产量增长曲线。预测结果显示，2005-2015年渤海湾盆地处于石油地质储量发现高峰期，2015年左右其石油产量达到高峰，之后处于下降趋势。实践证明，利用多旋回哈伯特模型对具有“多峰”特征的石油地质储量和产量的未来趋势进行预测是一种有效的方法。     

浅谈东深供水改造工程的设计监理工作

施工图阶段设计监理工作的内容归纳起来主要是对设计质量进行控制.依据<水利建设工程招标、施工图阶段设计监理试行规定>,其具体工作内容仅限于设计成果的合法性和安全性,没有充分发挥设计监理作用,对施工图阶段设计质量的理解是不全面的.施工图阶段的设计质量不仅仅是提交合法和安全的图纸,而且图纸的提交时限性、可实施性及经济性也应是考核设计质量的重要组成部分,为此东深供水改造工程的设计监理工作内容确定为"五项控制"和"两项权利",全面地对施工图阶段的设计质量进行控制.     

大坝监测自动化中的人工比测研究

阐述了人工比测的概念、方式和数据分析方法,对人工比测及数据分析中应注意的问题也进行了深入研究。     

环境辐射仪器γ照射量率刻度的阴影屏蔽法

概述了阴影屏蔽法的操作步骤。对阴影屏蔽法所不能扣除的端墙面阴影部分A_0的γ反散射贡献进行了估算:当被刻度的仪器距端墙1.5m远时,端墙面阴影部分A_0的γ反散射贡献约为0.1—1%。对过阴影屏蔽与阴影屏蔽不足等若干影响因素分别进行了实验或讨论。     

MODELING OF WATER DYNAMICS AND POLLUTANT SPREADING IN THE LUOMAHU RESERVOIR FOR WATER TRANSFER FORM SOUTH TO NORTH OF CHINA

1 .　ＩＮＴＲＯＤＵＣＴＩＯＮＷａｔｅｒＴｒａｎｓｆｅｒＦｒｏｍＳｏｕｔｈＴｏＮｏｒｔｈＰｒｏｊｅｃｔ(ＷＴＦＳＴＮＰ)ｉｓａｇｒｅａｔｄｅｃｉｓｉｏｎｔｏｓｏｌｖｅｔｈｅｐｒｏｂｌｅｍｏｆｗａｔｅｒｓｈｏｒｔａｇｅｉｎｔｈｅｎｏｒｔｈａｎｄｃｅｎｔｒａｌｐａｒｔｓｏｆＣｈｉ ｎａ .Ｔｈｉｓｐｒｏｊｅｃｔ ,ｉｎｃｌｕｄｉｎｇＥａｓｔ ,Ｃｅｎｔｒａｌ ａｎｄＷｅｓｔ Ｌｉｎｅ ,ｗｉｌｌｄｒａｗｗａｔｅｒｆｒｏｍｔｈｅＹａｎｇｔｚｅＲｉｖｅｒｔｏｔｈｅｎｏｒｔｈａｎｄｃｅｎｔｅｒｏｆＣｈｉｎａｓｏｔｈａ…     

Engineering Geological Problems of Levee Along Middle and Lower Reaches of Yangtze River

1　ＩｎｔｒｏｄｕｃｔｉｏｎＢｅｃａｕｓｅｏｆｔｈｅｃｏｍｐｌｉｃａｔｅｄｓｕｂｓｏｉｌｐｒｏｆｉｌｅ ,ｔｈｅｌｅｖｅｅａｌｏｎｇｍｉｄｄｌｅａｎｄｌｏｗｅｒｒｅａｃｈｅｓｏｆＹａｎｇｔｚｅ ,ａｂｏｕｔ 36 0 0ｋｍｌｏｎｇ ,ｈａｓｍａｎｙｈｉｄｄｅｎｐｅｒｉｌｓ .Ａｍｏｎｇｔｈｅｄａｎｇｅｒｏｕｓｅｖｅｎｔｓｄｕｒｉｎｇ 1998’ｓｆｌｏｏｄｓｅａｓｏｎｉｎｔｈｅｗｈｏｌｅｖａｌｌｅｙ ,12 .7%ｏｃ ｃｕｒｒｅｄａｌｏｎｇｔｈｅｔｒｕｎｋｓｔｒｅａｍｄｙｋｅｓ,ｏｆｗｈｉｃｈ 6 98ｗｅｒｅｔｈｅｍｏｓｔｄ…     

延迟破胶及强制裂缝闭合技术的研究及应用

采用延迟破胶技术,在压裂施工过程中加入不同浓度的胶囊破胶剂,利用它的延缓释放特性,使植物胶压裂液耐温、耐剪切稳定性增强,并且可以在不造成压裂液的流变性、滤失性和携砂性等过早丧失的前提下高浓度使用胶囊破胶剂。该技术与常规破胶技术相比,延缓释放率达50%,能更有效地清除液体残渣,减少压裂液对储层的伤害。同时由于有延缓破胶的特性,放喷采用相应的措施,可以降低支撑剂沉降速度,形成较好的沉砂剖面,提供高的裂缝导流能力,并且可以降低滤饼和压裂液残渣的伤害。     

大藤峡水利枢纽及在珠江防洪与水资源综合利用中的地位与作用

大藤峡水利枢纽是珠江流域西江干流上的控制性水利枢纽工程，在流域防洪及水资源方面具有不可替代的作用，同时具有发电、航运与灌溉等综合利用效益。国务院在对《珠江流域防洪规划》的批复中要求抓紧做好前期工作．积极促进大藤峡水利枢纽建设。本文对大藤峡水利枢纽及在珠江防洪与水资源综合利用中的地位与作用进行了简要的介绍。     

Impedance spectroscopy of ultrafine-grain SnO2 ceramics with a variable grain size

The impedance spectra of nanocrystalline SnO₂ ceramics with an average grain size d ranging from 3 to 43 nm were investigated in the frequency range 1–10⁶ Hz at temperatures from 25 to 300°C in a dry oxygen atmosphere. Analysis of the experimental data by the graphoanalytical method made it possible to separate the contributions of grain bulk and grain boundaries to the conductivity. It is shown that the samples investigated can be arbitrarily divided into two groups with respect to the character of their conductivity. For the samples with an average grain size d < 25 nm, the charge transfer processes are almost completely determined by the grain boundaries. In samples with a larger grain size, the contribution of grain bulk to the conductivity is comparable with that of grain boundaries.     

Formation of C49-TiSi2 in flash memories: a nucleation controlled phenomenon?

The formation of Ti silicides has been examined in flash memories with 0.25 μm linewidth by X-ray diffraction, scanning electron microscopy, and transmission electron microscopy. It has been observed that, after the first rapid thermal process and the selective metal etch, there is no silicide on the source and on a majority of drain contacts while C49-TiSi₂ is found on the gate. A pre-amorphisation implant increases drastically the formation of C49-TiSi₂ in the drain zone while modifications of annealing conditions have little impact. These results indicate that the formation of C49-TiSi₂ is most likely controlled by nucleation and that this nucleation is sensitive to both the width and the length of the reaction zone. The formation of a Ti rich silicide may play an important role in this nucleation by decreasing the driving force for the formation of C49-TiSi₂. Curiously enough, the formation of C49-TiSi₂ appears thus as a major concern for the salicide process in flash memories.