琼东南盆地深水区储层分布规律

琼东南盆地深水区经历了断陷、断拗和拗陷3大构造演化和沉积充填阶段,主要发育4种沉积体系,相应地形成了4类主要储层:1)陵三段扇三角洲或滨海相砂岩储层;2)三亚、梅山组滨浅海相砂岩储层;3)三亚—莺黄组低位体储层;4)梅山组台地边缘礁滩灰岩储层。平面上,储层发育具有明显的分带性,可划分为:北部浅水陆架滨岸砂岩、三角洲砂岩储层发育带;中央坳陷低位体储层发育带;南部永乐隆起区碳酸盐岩储层发育带。深水区主要位于后2个带,每个带储层发育的控制因素不同,可以进一步划分为多个储层发育区。每个储层发育区存在多套储盖组合,每套储盖组合在多个储层区中发育。其中台地灰岩储层可能成为南部隆起区具有重要意义的勘探层系。      

非稳定井流模型的半解析解

为了提高非稳定渗流计算的计算精度 ,通过数学分析得到了水位传导系数随时间变化时 ,一类非稳定渗流井流模型的半解析解 ,并进行了计算比较     

凉水河污染对土壤和地下水的影响

在凉水河下游取河床底泥及河床下部土样,分析其NH3-N、磷和有机物的变化,发现底泥对NH3-N和磷的去除发挥了很大作用,分别是下部土壤吸附量的10倍和1倍多;土中5种氯代烃均有检出,是河水长期渗漏积累的结果。凉水河流域内的野外试验结果表明,凉水河对地下水存在污染,污染组分主要是CODCr,NH3-N也有一定污染,其他无机污染组分如NO3-N,Cr6+,TP和Pb2+对地下水的影响较小,氯代烃对地下水也有一定影响。据推测,凉水河污染对地下水的影响范围大概在河两侧80 m范围内。     

Measurement and Identification of the Parameters of SPICE-Models of a Bipolar Transistor

A method of measuring and identifying the static parameters of a bipolar transistor is considered. The characteristic of the transistor, from which the parameters of the model are determined, is chosen depending on what group the calculated parameters belong to. The characteristics are measured in such a way that the equations of the model describing them can be reduced to the simplest form.     

隔河岩水电站大坝廊道排水系统自动化改造

隔河岩水电站大坝廊道排水控制系统存在设备备品、备件不足,技术落后,系统软件工作不稳定等问题,不能按库坝管理要求对排水量进行监控,严重影响廊道排水系统的可靠性。为此,对该系统进行了综合自动化改造,采用TCP6IP通讯,PLC直接上网,异种CPU热备冗余等技术,提高了整个系统的运行可靠性,满足了“无人值班”的要求。     

电视新闻拍摄也需要美感

分析电视新闻拍摄美感的重要性和必要性,提出在实地拍摄过程中如何体现电视新闻的美感。     

Expanding the analytical potential of channel locational probability maps using cellular statistics

The planimetric shifts in channel location of large alluvial rivers are a critical component in the creation of diverse structures and functions in riverine habitats. Engineered management schemes must also compensate for this type of channel change to protect resources and maintain navigation channels. The stability of the Lower Mississippi River channel was assessed through an analysis of historical records of channel position produced and archived by the United States Army Corps of Engineers. Channel location was recorded for the years 1765, 1820, 1881, 1915, 1930, 1937, 1960 and 1970. Channel stability was measured by two introduced metrics on a cell‐by‐cell basis: (1) the standard deviation of Euclidean distance to a channel cell for the entire period of record, and (2) the rate of Euclidean distance change between years in the period of record. At a coarse spatial scale, channel instability increased in the downstream direction. The variability of channel stability also increased in the downstream direction. Analysis of this variability identified alternating areas of high and low stability occurring with greater frequency as distance downstream increased. These findings are validated by past studies of channel stability along the Lower Mississippi River. As a result, the proposed metrics provide a consistent, quantitative, efficient and cost‐effective means of identifying areas of channel instability at several spatial scales. Copyright © 2006 John Wiley & Sons, Ltd.     

濮城油田多油层非均质油藏剩余油研究

濮城油田沙二下油藏纵向上有8个砂组37个小层,渗透率级差在5~30倍,是多油层非均质油藏,目前综合含水92·85%。为了做好高含水、高采出程度阶段的油藏调整,对此类油藏分层的剩余油分布规律进行定性描述和定量评价。根据剩余油研究及分布特点,进行了细分调整。调整实施后,采收率提高0·82%,产量保持3年稳定上升,平均由16·84×104t上升至18·41×104t,综合含水下降2·1个百分点,取得了明显的效果。     

从图像的二维谱分析现行电视的缺陷

从图像的二维谱可以得出现行广播电视图像为什么不能满足人眼的视觉匹配以及现行电视制度的不足 ,从而对未来的高清晰度电视发展提出要求。     

基于VXI总线的超宽带线性调频信号源的设计

主要介绍了VXI总线C尺寸超宽带线性调频信号源的设计方法，重点描述了利用现场可编程逻辑器件FPAG和DSP设计VXI总线接口电路，以及数字波形存储直读技术在线性调频信号源中的应用。