美国《分析化学》杂志1993年应用研究综述：地质与无机物料分析（连载二）     

Jack.  LL 周丽沂 《物探化探译丛》1995,(5):35-42

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长庆中部气田奥陶纪马家沟组储层成岩模式与孔隙系统   总被引：1，自引：2，他引：1  

吴亚生何顺利  卢涛达世攀  李跃刚戴永定 《岩石学报》2006,22(8):2171-2181

长庆中部气田奥陶纪马家沟组马五～马五储层的主要成岩作用包括:(Ⅰ)准同生白云石化作用;(Ⅱ)白云石对小球状硬石膏结核(简称"膏球")和板状硬石膏晶体的交代;(Ⅲ)石膏的溶解;(Ⅳ)自生石英、自生粘土矿物在白云石晶间生长;(Ⅴ)早期方解石的充填作用;(Ⅵ)晚期方解石的充填作用;(Ⅶ)钾石盐的充填作用;(Ⅷ)去白云石化作用。其中造成孔隙的是(Ⅰ)、(Ⅱ)、(Ⅲ),破坏孔隙的主要是(Ⅴ)、(Ⅵ)、(Ⅶ)、(Ⅷ)。最重要的成岩作用是(Ⅰ)、(Ⅱ)、(Ⅲ)。主要的成岩模式有:云化-溶蚀型、云化-溶蚀-充填型、云化-溶解型、云化-交代-溶解型、云化-交代-溶解-早充填型、云化-交代-溶解-早充填-晚充填型、云化-交代-溶解-早充填-晚充填-钾石盐充填型。其中云化-溶解型、云化-交代-溶解型以及云化-溶蚀型是形成孔隙的主要成岩方式。主要的孔隙系统类型有5种:密球型、"球 胀裂缝型"、"球 晶间溶孔型"、晶模孔型、晶间溶孔型。其中,密球型、"球 胀裂缝型"、"球 晶间溶孔型"是最主要的孔隙系统类型。长庆中部气田马五段储层的发育首先受沉积微相控制,即膏球的发育;在此基础上还受成岩方式控制。膏球发育于马五、马五、马五、马五,尤其是马五。白云石对硬石膏球的交代作用和石膏的溶解作用广泛发育于马五、马五、马五、马五、马五、马五、马五、马五地层中。早期方解石、晚期方解石和钾石盐的充填作用主要发育在马五、马五、马五和马五地层中,而在马五、马五地层中不发育。膏球在马五、马五、马五不发育。所以,马五、马五、马五是最好的储集层段马五、马五是其次的储集层段。马五、马五、马五是最差的储集层段。  相似文献   

TSR对深部碳酸盐岩储层的溶蚀改造——四川盆地深部碳酸盐岩优质储层形成的重要方式   总被引：54，自引：16，他引：54  

朱光有张水昌  梁英波马永生戴金星  周国源 《岩石学报》2006,22(8):2182-2194

四川盆地海相层系发现的大气藏部含或高舍硫化氢,都发育一定厚度的优质储层,而且优质储层与硫化氢分布具有密切的关系,即气藏硫化氢含量越高,储层性质越好,气藏产能也越大。研究发现,在 TSR(硫酸盐热化学还原反应)过程中,随着膏质岩类的溶解(为 TSR 反应提供 SO_4~(2-)),使储集孔隙初步得到改善;而 TSR 产生的硫化氢溶于水形成的氢硫酸,具有强烈腐蚀性,加速了储层中白云岩的溶蚀,形成孔隙极其发育的海绵状孔洞体系,并呈层状分布。电镜下可以清晰看到白云石晶面的溶蚀坑及溶孔中 TSR 产生的硫磺晶体。溶孔中自生碳酸盐的碳同位素在-10.3‰～18.2‰,而地层碳酸盐的碳同位素在 3.7‰～ 0.9‰,证实了 TSR 过程中有机-无机的相互作用,即有机成因烃类中的碳转移到次生碳酸盐岩中。包裹体分析表明,次生方解石中的包体富含硫化氢,且均一温度多数在160℃以上,具备 TSR 发生的温度条件;硫化氢和硫磺的硫同位素比地层硫酸盐的硫同位素偏轻8‰左右,是 TSR 作用的证据。因此高含硫化氢气藏的优质储层是在早期埋藏溶蚀作用的基础上,后期发生 TSR 及其形成的酸性流体对深埋碳酸盐岩储层再次进行深刻改造和强烈溶蚀作用的结果;同时可以运用硫化氢来预测碳酸盐岩优质储层的分布。  相似文献   

Multi-Year Simulations and Experimental Seasonal Predictions for Rainy Seasons in China by Using a Nested Regional Climate Model （RegCM_NCC） Part Ⅱ： The Experimental Seasonal Prediction   总被引：5，自引：2，他引：5  

丁一汇  刘一鸣  史学丽  李清泉  李巧萍  刘艳 《大气科学进展》2006,23(4):487-503

A nested regional climate model has been experimentally used in the seasonal prediction at the China National Climate Center (NCC) since 2001. The NCC/IAP (Institute of Atmospheric Physics) T63 coupled GCM (CGCM) provides the boundary and initial conditions for driving the regional climate model (RegCM NCC). The latter has a 60-km horizontal resolution and improved physical parameterization schemes including the mass flux cumulus parameterization scheme, the turbulent kinetic energy closure scheme (TKE) and an improved land process model (LPM). The large-scale terrain features such as the Tibetan Plateau are included in the larger domain to produce the topographic forcing on the rain-producing systems. A sensitivity study of the East Asian climate with regard to the above physical processes has been presented in the first part of the present paper. This is the second part, as a continuation of Part I. In order to verify the performance of the nested regional climate model, a ten-year simulation driven by NCEP reanalysis datasets has been made to explore the performance of the East Asian climate simulation and to identify the model’s systematic errors. At the same time, comparative simulation experiments for 5 years between the RegCM2 and RegCM NCC have been done to further understand their differences in simulation performance. Also, a ten-year hindcast (1991–2000) for summer (June–August), the rainy season in China, has been undertaken. The preliminary results have shown that the RegCM NCC is capable of predicting the major seasonal rain belts. The best predicted regions with high anomaly correlation coefficient (ACC) are located in the eastern part of West China, in Northeast China and in North China, where the CGCM has maximum prediction skill as well. This fact may reflect the importance of the largescale forcing. One significant improvement of the prediction derived from RegCM NCC is the increase of ACC in the Yangtze River valley where the CGCM has a very low, even a negative, ACC. The reason behind this improvement is likely to be related to the more realistic representation of the large-scale terrain features of the Tibetan Plateau. Presumably, many rain-producing systems may be generated over or near the Tibetan Plateau and may then move eastward along the Yangtze River basin steered by upper-level westerly airflow, thus leading to enhancement of rainfalls in the mid and lower basins of the Yangtze River. The real-time experimental predictions for summer in 2001, 2002, 2003 and 2004 by using this nested RegCM NCC were made. The results are basically reasonable compared with the observations.  相似文献   

Upper mantle convection beneath northwest China and its adjacent region driven by density anomaly     

许萍傅容珊  黄建平查显杰 戴志阳 《地震学报(英文版)》2006,19(5):552-562

Introduction The northwest of China includes Tarim, Junggar and Qaidam basins, and Kunlun, Tianshan, Altun and Qilian mountains, as well as the north part of the Tibetan Plateau. For a long time, the study of lithosphere structures and dynamics in this area has been a popular topic in geoscience, and has yielded many results. For example, TANG (1994) and LI et al (1998) suppose that the tectonic structure of Tarim Basin is various with geological periods, which changes many times betwee…  相似文献   

Implementation of a Surface Runoff Model with Horton and Dunne Mechanisms into the Regional Climate Model RegCM_NCC   总被引：1，自引：0，他引：1  

史学丽  谢正辉  刘一鸣  杨宏伟 《大气科学进展》2007,24(5):750-764

A surface runoff parameterization scheme that dynamically represents both Horton and Dunne runoff generation mechanisms within a model grid cell together with a consideration of the subgrid-scaie soil heterogeneity, is implemented into the National Climate Center regional climate model （RegCM_NCC）. The effects of the modified surface runoff scheme on RegCMANCC performance are tested with an abnormal heavy rainfall process which occurred in summer 1998. Simulated results show that the model with the original surface runoff scheme （noted as CTL） basically captures the spatial pattern of precipitation, circulation and land surface variables, but generally overestimates rainfall compared to observations. The model with the new surface runoff scheme （noted as NRM） reasonably reproduces the distribution pattern of various variables and effectively diminishes the excessive precipitation in the CTL. The processes involved in the improvement of NRM-simulated rainfall may be as follows： with the new surface runoff scheme, simulated surface runoff is larger, soil moisture and evaporation （latent heat flux） are decreased, the available water into the atmosphere is decreased; correspondingly, the atmosphere is drier and rainfall is decreased through various processes. Therefore, the implementation of the new runoff scheme into the RegCMANCC has a significant effect on results at not only the land surface, but also the overlying atmosphere.  相似文献   

北京市朝阳区沙子营垃圾污染物在潜水含水层中迁移规律的现场模拟实验     

刘长礼詹黔花  张凤娥张云 张胜叶浩  侯宏冰张明裴丽欣  姜建梅 《地质通报》2007,26(3):305-311

选择北京平原区水文地质、环境地质等方面都比较典型的沙子营垃圾堆放场,建立了其水文地质模型。在充分收集资料、分析得出部分计算所需参数后,采用现场弥散实验、勘查取样测试等方法,求得了该含水层的弥散系数等参数;用二维非稳定流溶质运移方程对污染物在此含水层中的迁移扩散规律、速度和污染范围等进行了模拟计算;采用现场钻探、取样测试分析等方法,评价了该含水层的实际污染状况。实验模拟计算和现场调查结果表明:污染物在潜水含水层中的运移规律遵循二维非稳定流场中的溶质运移方程,污染物在潜水含水层中的运移速度约为86.25m/a,迁移扩散主要发生在地下水流向上,侧向扩散宽度极小,是地下水流向上的1/17。  相似文献   

巴颜喀拉山西段二叠纪古海山的发现及意义     

黎敦朋李新林  周小康王向利 李玮高小平  杜少喜戴新宇 刘幼骐 《地质通报》2007,26(8):996-1002

在巴颜喀拉盆地西段黄羊岭组中发现了一个长约3km、厚约1295m的玄武岩 碳酸盐岩的隆起建造,具有3个由玄武岩基底加碳酸盐岩盖层组成的双层剖面结构。隆起建造中海相沉积物由下至上从深海相渐变为浅海相,生物化石由浮游生物组合演变为浅海造礁生物组合。通过与现代海山的对比,证实巴颜喀拉西段发现的隆起建造属古海山堆积,根据化石的时代确定其为中二叠世的古海山,暗示巴颜喀拉盆地在中二叠世以前存在一个古大洋,其后古大洋逐渐俯冲消减,演化为残留洋盆地,这对巴颜喀拉盆地地质构造演化的研究和构造属性的厘定具有重要意义。  相似文献   

对2007年奥运演练（好运北京赛事）气象英语服务分析与思考     

马小梅戴洋  胡文东 《气象软科学》2007,(4):50-53

2007年“好运北京”体育系列赛事的举行，为奥运气象服务提供了一次难得的实战演练机会。演练中专门设置了翻译岗，从事气象预报产品及预警信息、情况通报等的翻译工作。通过演练，奥运气象服务翻译岗熟悉了业务流程和基本业务内容，队伍得到了锻炼，为明年奥运会的正式举办积累了宝贵经验。同时，针对性的英语强化培训，使得整个奥运气象服务团队的英语应用能力都得到明显提高。  相似文献   

太阳光斥力对慧尾运动的影响     

郑学塘  郁丽忠 《紫金山天文台台刊》1998,17(2):147-111

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