ɽ��CORS����ʱ������������������

?????CORS??2?????????д?????????????????????????У???????CATS???????????????????CORS??????????????е??????????????з??????????????1??CORS??????????????в????а???????????????????2??CORS?????????????????N??E??U??????????????????????????￡????У?N??E????????????????WN+FN??U????????????????WN+FN+RWN;3???????CORS?????????????????????????????????????????????????????????????????????????????????     

基于sato模型的山西北部地区尾波Q值研究

依据sato单次散射模型,对山西北部（北纬380-41^0）2001年至2011年13个数字遥测子台记录的地震波形资料进行计算和分析。拟合尾波窗长40S时尾波Q值对频率的依赖关系,得到山西北部地区Q值随频率的变化关系式。其中,阳原台Q。值最高,大同台Q0值最低。研究区多数台站都表现为低Q0值,高q值,符合Q值与频率的依赖关系,表明该地区地下介质非均匀程度高,构造活动强烈;另外,研究区大同台、右玉台和偏关台相对于本次研究的其他台站为低Q0值区,这一区域正好位于我省西北部NNE走向的口泉活动断裂处,中间以盆地为分割,与恒山、六棱山断裂分开,表明研究结果与研究区活动断裂和沉积厚度有一定的关系。     

紫金山地区煤系致密砂岩储层特征及主控因素

鄂尔多斯盆地东北缘紫金山地区上古生界煤系致密砂岩气资源潜力大,是我国当前非常规天然气勘探的重要地区之一。通过铸体薄片、扫描电镜、孔渗测试和压汞实验等分析测试,结合钻井和测井资料,分析了致密储层的岩石学、孔隙、物性和含气性特征。结果表明：紫金山地区煤系砂岩储层以岩屑砂岩为主,石英和岩屑体积分数高,长石体积分数低,成分成熟度和结构成熟度中等;孔隙类型以溶蚀孔为主,孔隙结构以中孔细喉和小孔细喉为主;孔隙度主要分布在2.00%~12.00%之间,平均6.96%;渗透率主要为0.01×10^-3~1.00×10^-3 μm²,平均为0.36×10^-3 μm²,孔渗相关性较好,与后期溶蚀作用有关;含气储层平均厚度为10.3 m,占砂岩储层总厚度的29%,含气饱和度为40.4%。储层发育主要受沉积作用、压实作用和溶蚀作用控制,沉积作用控制了储层形成的物质基础和空间展布,不同环境下沉积的岩石成分直接影响了压实作用的强弱,砂岩、泥岩、煤层叠置发育的特征为溶蚀作用奠定了基础;压实作用是造成储层致密的最主要因素;溶蚀作用是区内储层物性改善的决定性因素;紫金山岩浆热作用和喷发作用进一步加强了溶蚀作用。     

鄂尔多斯盆地长北气田山西组2 段高分辨率层序构型与砂体预测

以钻井测井、岩芯描述和样品分析为基础,高分辨率层序分析为技术方法对鄂尔多斯盆地长北气田山西组2段进行了精细的沉积相和层序分析,将山2段确定为海相辫状河三角洲沉积体系,并将其划分为1个长期、2个中期、4个短期和9个超短期基准面旋回层序和2大类5种基准面旋回结构类型。分析了不同级别基准面旋回层序的叠加式样与砂体展布和演化规律,建立了以中期基准面升、降半旋回相域为等时地层单元的山2段地层格架和对单砂层进行了等时追踪对比,确定中期上升期是三角洲河道砂体连续叠置形成巨厚砂体的最有利时期,洪泛期为细粒沉积物沉积期,也是隔层和局域性盖层主要发育期,下降期受侵蚀影响河道砂体不发育。以高分辨率层序分析为基础,建立等时地层格架为约束条件,结合单砂体为等时地层单元编制砂岩等厚图、砂/泥比等值线图和沉积微相图,对长北气田山2段砂体分布开展序贯指示三维模拟和预测,为长北气田山2段气藏高效开发提供依据。     

山西大地电场弱日变分析

通过分析山西5个地电场观测台站的弱大地电场日变化现象,认为其与电极的稳定性密切相关,这在代县台、临汾台、夏县台大地电场中表现比较明显;其次背景噪声大是造成山西大地电场弱日变的另一主要原因,这在大同台、太原台大地电场表现比较明显。此外,山西大地电场弱日变化与各台地下电性结构、季节变化等因素有密切的关系。     

近15年来山西省区域经济发展差异及其成因分析

山西省是我国最重要的能源基地之一,1993年以来山西省各地区均得到较快发展。同时,区域内部经济发展的绝对差异在不断扩大,相对差异呈现高位波动状态。以山西省11个地级市为地域单元,通过对标准差、变异系数、相对发展率、产业偏离度、区位熵等参数的计算,结果发现:山西省地区经济空间演化特征与地区经济差异时序波动相对应,呈现出中、东、西波浪式经济差异格局和3个明显的中心外围结构。对形成区域经济差异的成因进行了定性与定量的分析,并提出了相关的政策性建议。     

New material of Cordaites baodeensis Sun from Lower Permian Shanxi Formation of Baode,Shanxi

Based on the anatomical study of leaf cuticles of Cordaites from the Lower Permian Shanxi Formation in Baode of Shanxi,the author analysed the epidermal characters of Cordaites in this area.On the base of the abundant compressions and laboratory studies,the author complemented some new data of the cuticular characters of the species Cordaites baodeensis Sun for its study of taxonomy.Meanwhile,the author newly discovered a number of sporopollen fossils associated with the mega-plants of Cordaitales,described...     

对山西隆起区中新生代构造演化的认识

对山西隆起区中新生代构造演化的认识,是探讨华北陆块演化、破坏等科学问题的基础。在中新生代期间,不论是岩石圈的差异演化、构造体制转换、岩浆活动,还是地貌反转,位于华北陆块中心部位的山西地区总是处于过渡带的位置。该地理位置说明了该区在华北陆块演化研究中的重要性。在近年1∶5万、1∶25万区域地质调查成果及以往研究资料的基础上,以中生代区域性断裂、新生代汾渭裂谷及山体隆升为主要研究内容,探讨山西隆起区中新生代岩石圈从增厚到减薄、构造体制从挤压到伸展转换,以及随华北陆块一起经历地貌格局从东高西低到西高东低转换的构造演化进程。研究认为,山西地区中新生代构造体系的发育从属统一的区域动力学环境,周边板块之间的相互作用引起深部软流圈变化: 软流圈下沉,岩石圈则相对增厚,地壳垂向伸展,横向收缩; 软流圈上涌,岩石圈相应减薄,地壳水平伸展。软流圈的变化对该地区中新生代构造变形、沉积格局、岩浆活动等方面起着控制作用。     

Nanoscale pore structure and fractal characteristics of a marine-continental transitional shale: A case study from the lower Permian Shanxi Shale in the southeastern Ordos Basin,China

Shale samples collected from seven wells in the southeastern Ordos Basin were tested to investigate quantitatively the pore structure and fractal characteristics of the Lower Permian Shanxi Shale, which was deposited in a marine-continental transitional (hereinafter referred to as the transitional) environment. Low-pressure nitrogen adsorption data show that the Shanxi Shale exhibits considerably much lower surface area (SA) and pore volume (PV) in the range of 0.6–1.3 m²/g and 0.25–0.9 ml/100 g, respectively. Type III kerogen abundant in the transitional Shanxi Shale were observed to be poorly developed in the organic pores in spite of being highly mature, which resulted in a small contribution of organic matter (OM) to the SA and PV. Instead, I/S (illite-smectite mixed clay) together with illite jointly contributed mostly to the SA and PV as a result of the large amount of inter-layer pores associated with them, which were evident in broad-ion-beam (BIB) imaging and statistical analysis. Additionally, the Shanxi Shale has fractal geometries of both pore surface and pore structure, with the pore surface fractal dimension (D1) ranging from 2.16 to 2.42 and the pore structure fractal dimension (D2) ranging from 2.49 to 2.68, respectively. The D1 values denote a pore surface irregularity increase with an increase in I/S and illite content attributed to their more irregular pore surface compared with other mineralogical compositions and OM. The fractal dimension D2 characterizing the pore structure complexity is closely related to the pore arrangement and connectivity, and I/S and illite decrease the D2 when their contents increase due to the incremental ordering degree and connectivity of I/S- or illite-hosted pores. Meanwhile, other shale constituents (including kaolinite, chlorite, and OM) that possess few pores can significantly increase the pore structure complexity by way of pore-blocking.     

山西煤层气赋存规律的影响因素分析

本文从构造、煤的埋藏深度、厚度及其物理特性以及水动力学等８个方面分析了影响山西煤层气的赋存规律，并划分了“少生多储”和“多生少储”两种基本煤储层类型，这对寻找和开发煤层气有重要参考价值。