四川盆地下二叠统断层与缝洞发育关系研究

四川盆地下二叠统碳酸盐岩为典型的缝洞型储层，断层带钻探获得了较好的效果。较多的研究认为断裂带是有利的裂缝发育带并沿裂缝形成溶洞，研究发现地表剖面溶洞充填物被断层切割错动，溶洞次生方解石充填物中可见沥青质包裹体和沥青团块，沥青物质为原油裂解成天然气后残留，而石油裂解成气的时间远早于构造断层菜成期，钻井质资料统计表明，放空的井次在断点附近并没有明显优势，放空井段通常造近侵蚀面顶部，而断层带以裂缝发育为主，因此，下二叠统储层中溶并非断层裂缝形成后的产物，溶洞发育时间在构造褶皱，断层形成之前，而构造褶皱，断层发育后并发未发生较大规模的岩溶作用。     

辽河盆地生烃史的数值模拟

基于对辽河盆地烃源岩的埋藏史、热演化史的准三维 ( X,Y和纵向的地质层段 ,加时间 )模拟 ,采用热模拟实验生烃率法建立了辽河盆地烃源岩的生烃史准三维计算模型 ,计算了不同层段在不同时期的生烃强度与生烃量 .在计算辽河盆地生烃量的同时 ,亦对资源量进行了估算 .模拟结果表明 :辽河盆地生油量为 70 0 .8× 1 0 8t,生气量为 5 9.6× 1 0 11m3 ;在 35 0 0 m以下生油量为 341 .3×1 0 8t,生气量为 1 8.8× 1 0 11m3 .西部凹陷的生烃量最多 ,东部凹陷的生烃量次之 ,大民屯凹陷面积最小 ,但有很好的生盖条件 ,其生气量与东部凹陷相当 .根据排聚系数估算出辽河盆地天然气资源量为 1 439.87× 1 0 8m3 .     

鄂尔多斯盆地富县探区三叠系延长组沉积特征

针对鄂尔多斯盆地富县探区三叠系延长组砂岩成分成熟度较低，长石、岩屑含量高，石英含量相对低的特点，以及对岩心和露头资料进行了研究。结果表明：该区沉积相类型有湖相沉积，有较大规模的三角洲砂体发育，三角洲砂体存在着明显的东、西分异性。对每一种沉积体系进行了相、亚相及微相划分和详细的描述，阐述了长8、长6、长2三个重点储集层段的沉积相构成、垂向演化及平面展布规律，为勘探部署提供了理论依据。     

准噶尔盆地西北缘二叠系乌尔禾组隐蔽圈闭

准噶尔盆地西北缘二叠系乌尔禾组地层是既有烃源岩又有储集岩的复合含油气系统。作者采用现代地震地层学方法 ,通过对地震资料、地质演化历史等资料的研究 ,并综合前人的研究成果 ,对乌尔禾组隐蔽圈闭进行了较深入的研究 ,认为该层主要发育基于扇三角洲沉积相的岩性型隐蔽圈闭 ,以及受岩性、构造等因素共同控制的隐蔽圈闭。该地区油源丰富 ,但构造圈闭不发育 ;因此 ,在准噶尔盆地西北缘研究和勘探隐蔽圈闭十分重要     

措勤盆地油气系统研究

研究措勤盆地的烃源岩、储集层、盖层和圈闭的特征 ,剖析各油气系统的发展演化历史 ,对该盆地的油气远景进行预测 .本区下白垩统川巴组的泥质岩 ,多巴组和郎山组的碳酸盐岩是有效烃源岩 ;川巴组的砂岩 ,多巴组的砂岩和碳酸盐岩以及郎山组的碳酸盐岩是主要的储集层 ;川巴组的泥质岩为局部盖层 ,多巴组和郎山组的碳酸盐岩是区域盖层 .燕山晚期运动为本区的油气聚集提供了有效的圈闭 .本区共划分了 7个油气系统 .根据盆地模拟结果综合分析表明 :措勤盆地最有利的油气区是洞错 -阿苏地区 ,该区的 K1ch- K1ch(!)油气系统是最有利的系统 ;其次是马窖 -门当日阿次地区 ,该区以 K1ch- K1ch(?)油气系统最有利 ;油气远景最差的地区是色卡错—麻米错地区     

冀中坳陷北区古近纪构造-沉积关系双向研究

从构造对沉积控制及沉积对构造响应等两个方面分析冀中坳陷古近纪构造与沉积关系 .结果表明 :1断块翘倾运动控制凹陷的沉积物源 ,控制沉积相的空间配置关系和沉积相带变化 ;2轴向倾斜运动控制沉积中心的迁移 ;3基底差异升降运动控制盆地的沉积分区 ;4水进期 ,沉积范围不断扩展 ,沉积物呈强烈的上超样式 ,显示凹陷呈现加速沉降特征 ;5水退期 ,沉积面积逐步缩小 ,沉积厚度减薄 ,沉积序列向上变粗显示基底处于减速沉降阶段 .     

长江流域洪灾探析

分析了长江流域洪灾的类型特征、水文特征、灾害特征，指出长江流域洪灾类型多样、水文特征复杂、灾害损失巨大且历时时间长；全面系统探讨了长江流域洪灾的成因，指出暴雨和河湖蓄泄洪能力不足是成灾的主要原因；阐述了应对长江流域洪灾的基本思路。     

Late Tertiary faults and their paleostress along the boundary between the Kuqa Basin and the Tianshan Mountains

Field investigation shows that the boundary between the Kuqa Basin and the Tianshan Mountains can be divided into two sections with the Yanbulak area as the dividing point. In the western section, the Mesozoic strata overlie unconformably on the Paleozoic rocks. The basin-dipping faults developed in both Mesozoic and Paleozoic rocks. The eastern section is characterized by basin-dipping normal faults separating the Paleozoic strata and Tertiary. The brittle structural analysis was carried out along the basin-range boundary. 360 measurements of striations have been obtained at a total of 25 sites. Paleostress reconstruction indicates that the basin-range boundary was in an extensional condition, with some superimposed strike-slip, during the Late Tertiary. The extension could be explained by the vertical block uplift of the Tianshan Mountains.     

Paleomagnetic result of the Cenozoic volcanic rocks from the Tuoyun Basin, southwest Tien Shan of China and its tectonic implications

In the present decades, lots of Mesozoic and Ceno-zoic paleomagnetic data have been obtained from westernChina and adjacent areas[1—19], however, these results are still not enough to reconstruct a postcollisional kinematic model for each block of the Tibetan Plateau and Central Asia. As a result, it is very difficult to paleomagnetically depict the postcollisional interaction within blocks of Ti- bet and Central Asia in detail. On the other hand, shal- lower inclinations have been repeat…     

Natural gas releasing simulation experiment of coal in process of temperature decreasing and decompression and preliminary application in Ordos Basin

Natural gas releasing simulation experiments were carried out in laboratory for researching the gas storage capacity in state of high temperature and high pressure and its gas releasing potential in process of temperature decreasing and decompression. The exiting phase state was studied through measuring gas adsorption of coal and PVT phase calculating of natural gas. Gas volume, gas molecular and isotope compositions in process of temperature decreasing and decompression were measured, natural-gas yields released from the Upper Paleozoic coal strata after later Cretaceous (K3) were calculated and the formation of the reservoir was studied combining with the geological background. The results indicate that natural gas stored in coal has still bigger releasing potential after the uplift of Upper Paleozoic strata. There exists a weak gas supply-effluent equilibrium in the reservoir of Ordos Basin, which is another possible evidence that the Upper Paleozoic gas reservoir may be a deep basin gas reservoir.