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81.
松辽盆地红岗北地区扶余油层岩性油藏储层特征及其主控因素分析 总被引：1，自引：0，他引：1
通过岩心观察、薄片鉴定、物性分析和扫描电镜观察等技术手段,研究了松辽盆地红岗北地区扶余油层岩性油藏储层的沉积特征、岩石学特征、物性特征、孔隙类型、结构特征及成岩作用特征,并进一步分析了储层主控因素。研究结果表明:红岗北地区扶余油层岩性油藏储层主要是顺源带状展布的(水下)分流河道微相及河口坝微相砂体,岩性主要以长石岩屑砂岩、粉砂岩为主,属于低—特低孔、低—特低渗储层,成岩阶段处于晚成岩A2段。储层物性主要受控于成岩作用和沉积微相,压实和胶结作用使储层孔隙度大量丧失、物性变差,而溶蚀作用产生次生孔隙使储层物性得到改善;不同沉积微相类型的储层物性差异较大,分流河道微相和河口坝(或席状砂主体)微相是油气聚集的有利相带。 相似文献
82.
Pipes inevitably encounter high ambient pressure and bending moment during the deepwater pipe-laying process,which can lead to elliptical buckling and even deterioration failure.For the safety of pipe-laying operation,available formalas for the pipe stability are established on the basis of the assumption of uniform deformation along the tube length and symmetrical buckling.This method can predict the nonlinear rcsponse of elliptical collapse of steel circular tubes for different ratios of diameter to thickness (D/t) under pure bending or combined bending and external pressure.In these formulas,the strain-displacement relationship is deduced from the nonlinear ring theory,and the Ramberg-Osgood constitutive model is applied to simulate the inelastic material behavior.Meanwhile,the principle of virtual work is adopted to derive the equilibrium equations.A set of equations is solved by the Newton-Raphson method,and the iterative scheme contains nested iteration for the constitutive relation.In order to check the effectiveness of this theoretical method,illustrative examples are presented in this paper.Besides,the numerical simulation is carried out by use of ANSYS.A comparison of the results shows that the theoretical method can provide reasonable prediction for engineering practice. 相似文献
83.
Zhihong LIU Defeng ZHU Junyi GAO Xiangmei WUDongcheng LIN Liguo ZHANG . Collage of Earth Sciences Jilin University Changchun China. Exploration Development Research Institute of Daqing Oilfield Company Ltd. Daqing Heilongjiang China 《东北亚地学研究》2008,11(1):19-24
The research area is situated in the western part of Tarim basin, which includes Awati depression and Bachu uplifted block. It underwent three times processes of compression in a large scale and a near term extension since Cambrian. The first compression occurred during Middle Cambrian to Devonian, which formed fault band folds in NW axial direction. They were ＂under-water uplift＂ and distributed all over the research area. The second compression occurred in Late Permian and formed fault band folds and a few fault propagation folds in NS axial direction. They are developed near Tumuxiuke fault belt and the northern research area. The western anticline is bigger than the eastern one in extent and size. The third compression occurred during Palaeogene to Quaternary and formed tumuxiuke fault belt and fault propagation folds in NW direction. They are distributed over the south part of the research area. Tumuxiuke fault belt is a big scale dextral reversed strike-slip fault belt; it transformed or destroyed the fold structure of the research area. A short-term extension occurred during Early Permian. Tarim Basin is in the rift forming stage of craton, and there exist widespread basic vol- canic rocks, basic intrusive bodies and dikes. 相似文献
84.
Jianhui QIU Xueda SONG Yunzheng WANG Yi ZHENG Xi YANG .College of Construction Engineering Jilin University Changchun China.Shenzhen Geotechnical Investigation & Surveying Institute Co.Ltd. Shenzhen China 《东北亚地学研究》2008,11(4):222-227
Based on the design principles of economic rationality and safety, multiple-pivot pile anchorage approach was used as the supporting engineering of a tall building with a deep foundation ditch. The designs, such as anchor arm, single pile and the whole, were set up in accordance with the calculations of the internal force from the equivalent beam and Yamagata Kunio methods. Moreover, the rationality of the design was estimated using the stability checks. FLAC3D was used for calculating the accuracy of the design. Using FLAC3D to simulating ditch cutting and supporting processes can obtain the equivalent results as the theory analysis in the displacement of ditch surrounding wall, the stress field and stress distribution. 相似文献
85.
RONG Fan CHEN Li YU Yanxin Tian Shouqi . College of Construction Engineering Jilin University Changchun China . China Petroleum Liaohe Engineering Co.Ltd. Panjin Liaoning China 《东北亚地学研究》2009,(3):179-182
The combination of Morgenstern-Price Method （MPM） with Response Surface Method （RSM） improves the eonventional RSM by replacing Finite-Element Method （FEM） with MPM, which is a type of reliability analysis method-RSM based on MPM, and makes the computing process simpler. The stability of the slope was re-evaluated by use of Monte Carlo method （MCM） and the result contrasted with the fore is the conclusion. The reliability analysis of the artificial slope in Donggang Power Station was carried on, and obtained the reliable charaeteristics, which provided basis for the project. 相似文献
86.
内蒙古查干哈达庙铜矿床位于内蒙-兴安造山带西段之华力西晚期褶皱带内,哲斯敖包复向斜南翼,受北东—北北东向断裂构造及下二叠统大石寨组变质岩系控制.该矿区矿化体赋存于下二叠统大石寨组三岩段(P1d3)的英安质凝灰岩、凝灰岩中,严格受北东向断裂构造控制.铜矿体为含铜石英脉体,赋存于北东向断裂构造中.矿区内共圈定7个铜矿体,矿体总体走向为北东—北北东向,倾角4375°.铜矿体呈脉状、透镜状,有分支现象,厚度变化小,属稳定型.通过系统总结矿床的矿体地质、矿物成分、矿物嵌布及围岩蚀变特征,认为铜矿成矿与变质岩系、断裂构造、岩浆热液活动有关,矿床成因类型为岩浆热液型. 相似文献
87.
扎鲁特盆地上二叠统林西组发育一套分布范围广、厚度大的泥岩,是潜在的烃源岩层系.采用有机质丰度、类型、来源和成熟度指标对盆地发育的林西组露头样品进行了分析.测试结果显示:林西组泥岩有机质丰度中等—较好,属于中等烃源岩;有机质类型均为Ⅲ型;有机质最大热解温度T max在363581℃之间,镜质组反射率(Ro)分布在1.38%581℃之间,镜质组反射率(Ro)分布在1.38%2.8%,均值为2.01%,二者表明林西组泥岩处于高成熟到过成熟阶段.研究表明:林西组泥岩为较好烃源岩,具有一定的生气潜力. 相似文献
88.
通过对地震发生时铁路采取的应急处置措施和我国高速铁路地震监测系统现状的分析,提出建设铁路地震监测预警系统的必要性.为确定地震监测预警台站,研究在高速铁路沿线布置台站的技术方案,特在汉宜高速铁路进行列车通过噪声试验,采集列车通过测点引起的振动数据,探讨列车通过的最大振动加速度和测点与铁路正线距离之间的衰减关系.利用统计分析方法分析最大振动加速度和距离之间的衰减关系.利用频域分析方法设置低通滤波器,对列车引起的振动数据进行滤波,进一步减少列车对台站监测预警数据的影响,所提出的衰减关系及数据初步处理方法对高速铁路地震监测预警台站选取和建设具有指导意义. 相似文献
89.
简述了凤太矿田中的典型构造蚀变岩型金矿床——八卦庙金矿的基本特征；初步分析了八卦庙金矿、丝毛岭金矿的地球化学特征，推测丝毛岭金矿点的成矿模式可能与八卦庙金矿床的成矿模式不同，或者是同一成矿系统中的不同成矿系列，而不同深度原生晕聚类分析谱系图显示，八卦庙金矿床随着深度的增加Au与亲岩浆（幔源岩浆）的元素相关性趋于密切，表明八卦庙金矿床的成矿有岩浆参与。重点研究了风太矿田中八卦庙及外围金矿的控矿因素——控矿构造特征、控矿地层及其岩性特征、矿化蚀变特征等，并以八卦庙金矿、柴蚂金矿为基础，总结归纳了八卦庙及外围金矿的富集成矿规律，进一步指明了八卦庙外围金矿的找矿方向及其找矿潜力。 相似文献
90.
ADAPT区域数字地震台网数据汇集与处理软件包 总被引：1，自引：0，他引：1
已经开发了一种区域数字地震台网处理软件包，称作ADAPT(Adaptive Data Acquisition and Processing Tools）。ADAPT软件系统适用于安装在区域遥测数字地震台网中心的Windows NT计算机网络，用于汇集和处理来自台网所属台站的数字地震波形数据，其主要功能包括在线自动处理和人机交互处理两个方面。本文将介绍ADAPT系统的基本功能，分析该系统的特点，并着重说明系统中采用的地震定位方法。 相似文献