地震复合波地质属性的研究方法

在地震资料解释中,地震复合波的地质属性问题一直没有得到很好地解决。本文针对松辽盆地砂泥岩薄互层的地质特点,提出了用波形合成追踪法研究地震复合波地质属性的方法。该方法在地震复合波正演合成过程中有五个可以识别的特征界面,其中 C 界面是地震复合波形成的主导界面;C 至 D 界面间的地层为形成地震复合波的主要地层。因此,找准 C 界面深度是建立地震复合波与钻孔地层间有机联系的关键,对地震地质层位准确标定和利用地震剖面复合波波形信息进行岩性预测极为重要。文中的应用实例表明,用该方法在松辽盆地较好地建立了地震信息与地质信息间的对应关系,解决了一些疑难地质问题,取得了较好的勘探效果。     

人工神经元网络测井解释软件系统

王大力，何清源．人工神经元网络测井解释软件系统．测井技术，１９９４，１８（４）：２５７～２６４在复杂岩性地层的测井解释中，常规的方法常把岩石的矿物成分设想得比较简单，评价地层岩性时需要大量的人工分析。本文提出运用人工神经元网络理论的测井解释软件系统。系统用自然伽玛能谱测井，结合实验室资料可准确确定粘土类型和求出粘土含量。选用了一种稳定性好、快速的优化算法，使用孔隙度测井资料求出孔隙度值，整个系统算法上力求快准、解释上力求尽可能减少人工干预，该软件系统经试用效果较好。     

An integrated intelligent machining system for axisymmetric parts using PC-based CAD and CAM software packages

Machining process planning involves the formation of a set of directions describing the machining operations required to transform raw stock into a finished part. Conventional process planning, performed manually, relies on the knowledge and competence of an experienced process planner and tends to be time consuming and error prone. In the past two decades, much effort has been spent on improving process planning by utilizing the power of a computer to emulate the capabilities of an experienced planner. During the same period, computer-aided design (CAD) and computer-aided manufacturing (CAM) software has been developed to enhance design productivity and to assist the NC code generation facets of the machining process. The entire planning process may be automated be integrating CAD and CAM using computer-aided process planing (CAPP). The research described in this paper outlines the design and development of an intelligent CAPP system integrating two commercial CAD and CAM software packages, Autocad and Mastercam.     

Hierarchical intelligent control with flexible AC transmission systems application

A novel hierarchical intelligent controller configuration is proposed using an artificial neural network as a control-mode classifier in the supervisory level and a set of pre-designed controllers in the lower level. Controller outputs are modified nonlinearly by the classifying signals in a structure resembling one artificial neuron with adaptively changed weights. The lower-level local controllers are implemented using neural networks. An illustrative example of this approach is based on the transient stabilization of a single-machine infinite-bus system studied in Flexible AC Transmission Systems (FACTS) research.     

岩石声学参数测量分析系统

刘祝萍等．岩石声学参数测量分析系统．测井技术，１９９４，１８（４）：２８８～２９８岩石声学参数测量是声波测井资料解释的基础性工作。本文介绍一种岩样声学参数测量分析系统，该系统能对岩样的纵（Ｐ）、横（Ｓ）波速度进行测量记录，并可将实测波形进入计算机，对所记录的波形进行频谱分析后，通过与标准试件的比较，可估算岩样的声衰减。     

用CT技术确定砂岩的孔隙度

周渤然等．用ＣＴ技术确定砂岩的孔隙度．测井技术，１９９４，１８（３）：１７８～１８４本文首先提出用计算机层析（ＣＴ）技术确定砂岩孔隙度的原理和方法。通过对四块人工岩样和六十块砂岩岩样的测定，其结果表明该方法是可靠的。使用ＣＴ技术可定量、定性地解释某些岩样的内部特征，重矿物分布及裂缝变化情况。实践表明，采用图象减法技术则有助于消除光束硬化现象造成的误差。     

黄土塬区天然气地震技术和综合解释

黄土塬区复杂的地表条件难以获得可供解释的物探资料,本文给出了勘探天然气的地震技术,在野外弯线地震数据采集中,冲沟区运用了弯线高分辨率技术;塬上区采用非纵测线和地震测深观测系统,大药量、深井和强化组合法的接收条件。初步解决了弯线地震资料处理中二维滤波、静校正、速度分析等技术难题。摸索出一套以地震为骨架,构造解释与岩性解释相结合,重力-电法-地震联合解释落实古生界天然气构造圈闭的综合物探解释技术,并以实例展示方法的有效性。     

赵41断块干扰试井资料分析

对晋县凹陷41断块油田采用小直径电子压力计试井新技术，成功地进行了干扰试井。通过对观察井、激动井所得试井资料的详细分析、评价，证实了干扰井组中各井间地层的连通性，为下一步实施注水开发提供了可靠的依据。同时，进行了地层产能的分析，做出了产能预测，认为随着原油流度、产能的降低，整个断块油藏产量将快速递减。因此，提出要对油藏及时补充能量，并采取原油降粘措施等建议。     

ZXJ10机IN业务功能扩展及实现

本文从智能网的基本概念入手,论述了利用 ZXJ10程控交换系统为发展智能网业务提供支持功能的技术策略以及分阶段实现的过程,并对各个阶段能够实现的业务作了简要介绍。     

“Technically Unavoidable” in Terms of Genetically Modified Organisms – an Approach for Food Control

In case of findings of authorized genetically modified (gm) plant ingredients below the 0.9 per cent threshold, exceptions from labelling requirements according to regulation (EC) No. 1829/2003 can only be made, “provided that this presence is adventitious or technically unavoidable”. The authors describe factors that should be considered regarding contaminations by gm plant ingredients as technically unavoidable or not. A practical approach for interpretation, taking into account quality control measures and documentation as well as present findings in comparable products is proposed. Received: February 23, 2007