Measurement of apparent velocity and azimuth of seismic signals recorded at an array

A set of computer programs was written which enables one to determine automatically, the apparent velocity and azimuth of any portion of the seismic wave-train recorded at various seismic arrays. All that is required to use these programs is that the raw data be available on digital tape and that the user have access to any modern computer. The programs are written in Fortran IV and make use of the adaptive processing method whereby the arrival times of the wavefront at each sensor are accurately determined by cross-correlating the observed wavelet of interest with the corresponding wave on the beam trace. The new arrival times are then used to create a new and improved beam and the whole operation is repeated in an iterative manner until convergence takes place.     

Identification of sandstone body types by computer method

Three sandstone body types—progradational (coarsening upward), aggradational (coarsening downward), and block—can be identified by computer using the least-squares method. The basic data are the digital gamma () ray and sonic log data. Other logs such as SP and resistivity (or conductivity) may also be used with minor changes in the computer program. A statistical program to compute the percent of each of these three types in a specified geologic unit was also written and run for several wells in the Beaufort Basin, Canada. An areal mapping of these calculated results shows the features of progradational sedimentation in this area. The percentage of progradational sandstones increases northward in a seaward direction. The amount of sandstones usually decreases in this direction.     

神经网络和分形几何方法在识别测井沉积微相中的应用

本文综合应用人工神经网络和分形几何等最新的模式识别数学方法，遵循地质家的思维方式，进行了测井资料沉积微相解释方法研究；并在工作站上开发了人机联作解释软件。将工作站系统在运算速度、人机交互及图件制作方面的优势与解释人员的经验和推理判断能力有机地结合起来，为测井资料沉积微相解释提供了新的技术手段和良好的计算机辅助工具。将其应用于辽河油田长北地区，对１８口井的沙海组上段～阜新组下段进行了沉积微相连续解释，取得了良好效果。     

多层介质含水系统中石油类污染预测评价：以大庆市纳污湖泡区为例

本文选取大庆贴不贴泡区的多层介质含水系统为研究对象,在分析水文地质条件和研究各层介质渗透规律的基础上,运用地质统计学方法和数值模拟技术建立起此类含水系统中石油类污染运移数值模拟模型,应用所建模型对地下水污染趋势进行了预测,并提出了污染控制措施。     

Delphi5与单片机串行通信

在Delphi5.0下利用添加VB6．0中ActiveX的一个通信控件（MSCComm32.OCX)实现在Windows 9x下PC机与单片机的串行通信，文明阐明了双方串行通信的实现方法，给出了用Delphi5.0和单片机C51语言编写的串行通信程序。     

灰色系统理论在二连洪浩尔舒特凹陷储层评价中的应用

本文利用测井资料,依据测井地质评价油气储层的分析准则,提出灰色理论精细评价油气储层的处理方法和解释系统。通过二连洪浩尔舒特凹陷储层的精细评价和综合解释,取得了明显的效果。文中介绍了这一分析方法处理过程及实用效果。     

双标量损伤模型及其在Biot固结有限元中的应用

在前人工作的基础上,推广并发展了各向同性双标量损伤变量理论,推导出双标量损伤变量模型的损伤演化方程。然后,将其引入比奥固结有限元方程中,并据此编制相应的双标量损伤变量流-固耦合有限元程序。最后,对一个软土路基有限元简化模型进行分析计算,并以典型节点为例,绘制了模型沉降值、孔压值、损伤变量等的变化曲线。结果表明,利用双标量损伤变量模型描述土的本构关系比单标量损伤模型更加合理。     

Optimum life of mine: declining production case

Conclusions By considering the mine to be depleted at a non-constant rate a considerable change in the mine life has been found. One can next consider a sensitivity analysis to determine which changes in which parameter are the more influential on the mine. Four computer programs were written in Fortran IV to use in this analysis and listings are available from the author. They are in interactive mode designed to be used for educational purposes.     

用自然伽玛曲线与岩石粒序关系解释沉积相

分析了三角洲相的自然伽测井曲线与岩石粒度的相关关系，并应用数学处理方法，对自然伽至测井曲线形态特征进行了量化，建立起与各种沉积相相对应的测井曲线形态标准特征模式，利用计算机自动解释沉积相类型。     

The use of computer animation techniques in the teaching of stereographic projection

A suite of 10 programs, written for the BBC Model B, uses computer animation techniques to aid in the teaching of the principles of stereographic projection. The representation of the net remains static in the background whilst plotting and rotation occur on a foreground plane. This mimics the actual operations that are required using a net and tracing paper. Plotting of planes, lines, intersection and rotation problems are covered by this package. The methods of computer animation are reviewed.     

测井曲线的岭回归及岩性柱状图的自动拾取

本文介绍了地球物理勘探测井资料的计算机处理中,采用岭回归方法对测井曲线DLW、HG、HGG、DZW进行处理,直接生成岩性柱状图。简要介绍了岭回归的原理和方法并通过实例,经过样本训练,给出了岩性的预测公式,计算结果和计算机绘制的岩性柱状图。该方法的实现对测井资料的计算机解释和成图有较大现实意义。     

成层Gibson地基中单桩沉降的非线性分析

针对成层Gibson地基模型,研究了轴向荷载作用下单桩的非线性沉降响应。利用最小势能原理求得桩土体系的控制方程,获得了土体位移的解析解及桩身沉降的差分方程式。将土体看作线弹性理想塑性材料,分析了土体的非线性对桩身位移的影响,提出了考虑非线性的单桩沉降响应计算方法,利用Maple编制了相应的分析程序。通过算例研究了土性参数及桩长径比对端承单桩沉降的影响。将研究结果应用于桩基静载荷试验成果的分析,结果表明,两者吻合较好,证明了该方法的合理性。     

Computer aided analysis of rock slope stability

Summary A computer program is written in basic language on a micro-computer to carrying out kinematic analysis of rock slope stability. The program is capable of handling plane sliding, wedge sliding and toppling of rock slopes. Applications of the program are demonstrated by examples on opencast mine excavations and highway cuts. The computer output are presented in the form of tables and illustrations for ease of interpretation. As micro-computers are readily available in design offices nowadays, the present work provides an efficient means for engineers to analyse and design rock slope excavations.     

利用模式识别技术识别致密砂岩含气层

准确识别致密砂岩含气层一直是测井解释工作所面临的一个难题，为准确识别致密砂岩含气储层，根据各种测井的响应特征，运用计算机模式识别技术进行气层综合识别。通过对实际资料处理与气层测试对比，气层识别的准确率可达到91％，储层划分的纵向误差均〈0．450m。     

多相流动测井数据的预处理方法及软件研制

通过测井曲线平滑处理和深度校正,对生产测井资料进行了预处理。采用VisualC++及与其兼容的C语言开发的可视化程序实现了生产测井资料的预处理功能,并且多相流动测井数据预处理的软件化为以后的解释工作提供了方便。实际测井资料解释试验表明,该方法应用于产液剖面测井资料解释,提高了解释的精度和可靠性。     

致密砂岩气层综合识别方法的改进

识别和评价含气致密储层是测井解释工作所面临的世界性难题之一。在测井曲线特性方面，含气致密储层不同于常规的油气、水层。本文根据测井响应特征，在利用井径、自然伽玛、中子、声波、密度、自然电位及电阻率等常规测井资料综合识别气层方面，对原有判别气层的特征参数进行改进。利用改进后的特征参数识别方法，对实际资料进行处理；通过对比发现，这种改进方法较大地提高了直观识别有效储层的准确率。     

The use of the natural gamma log in engineering geological investigations

The natural gamma log is widely used in both cased and uncased boreholes to identify changes in lithology down the length of a borehole. This is particularly important in the ground investigation process where 100% core recovery is often not achieved in the borehole programme. In this paper the use of the gamma log to provide additional information from the ground investigation boreholes is examined and illustrated by a number of case histories. It is shown that the gamma log can be used to study both the lithological variations within an individual borehole and changes in geological structure across a construction site. It is also demonstrated that a geological formation or sequence can be classified in terms of its natural gamma signature, which enables the geologist to observe its presence over large distances on a regional basis. The importance of the calibration of the gamma sonde and the use of the correct logging speed is emphasised in the paper. The successful calibration of the log against a quarry wall using a known observed geological structure as a reference is also described together with the use of the resulting information to obtain a geological log for boreholes drilled behind the quarry face. Its use in extrapolating between boreholes to detect and trace the presence of a particular geological formation to estimate its vertical and lateral extent for possible extraction is also discussed.     

现场总线CAN通信中多线程的应用

现场总线是用于自动化系统最底层的现场设备或仪表互联的通信网络。CAN是现场总线中的一种，具有较高的性能价格比和较强的实时处理能力。文章以采用CAN总线的通讯网络结构的校园消费系统为例，介绍在CAN总线通信中如何采用基于多线程的通信程序实现实时的接收、处理和发送数据的功能，对多个线程之问的协作关系进行了分析，以及对采用信号量实现线程的互斥和同步问题进行了详细的论述，最后给出了利用Delphi编写的线程的框架。     

Assessing flow systems in carbonate aquifers using scale effects in hydraulic conductivity

Counter to intuition, small-scale measurements of hydraulic conductivity do not average to regional values. Instead, mean hydraulic conductivity increases with measurement scale up to a critical distance termed the range, beyond which a constant regional value prevails. Likewise, variance in log hydraulic conductivity increases with separation distance between measurement points as the spatial correlation decreases. As dissolution proceeds in carbonate aquifers, heterogeneity and the volume necessary for an equivalent homogeneous medium (EHM) both increase. As these variables increase, the range of scale increase in both mean hydraulic conductivity and variance increases proportionately. Consequently, the range in scale effects is a reliable measure of the degree of secondary dissolution. By correlating the numeric value of range with independently measured hydraulic properties, the prevalent type of flow system, diffuse, mixed or conduit can be determined.