柴达木盆地北缘富氦天然气的发现——兼议成藏地质条件     

张云鹏  李玉宏  卢进才  李永红  宋博  郭望 《地质通报》2016,35(203):364-371

在柴达木盆地北缘全吉山、团鱼山地区的煤炭钻孔和泥页岩解吸气中发现了体积分数较高的氦气显示。对2个地区的6件样品进行甲烷C同位素和He同位素分析,其中2个样品的δ13C1值分别为-38.4‰和-39.9‰,属于有机成因。4个样品的3He/4He同位素测试结果在0.03×10-6~1.3×10-6之间,表明氦气来源以壳源氦为主,个别样品有少量幔源氦加入。通过区域背景资料和物探资料分析认为,柴北缘壳源成因的氦可能主要来源于基底富U、Th花岗岩体的放射性衰变,而柴北缘的山前深大断裂则可为氦的运移提供良好通道。氦气产生后,在垂向运移过程中结合其他烃类或非烃类气体,在侏罗系、古近系—新近系良好的储盖条件下,有可能形成独特的富氦天然气富集。  相似文献   

Experimental Measurements of Solitary Wave Attenuation Over Shallow and Intermediate Submerged Canopy     

王千  郭晓宇  王本龙  房詠柳  刘桦 《海洋工程》2016,(3):375-392

Attenuations of solitary wave over a patch of submerged canopy are experimentally investigated. The submerged canopy is modeled by a group of circular cylinder array. The decay coefficients of different wave heights in two water depths along the wave flume are measured for six canopy models, including two canopy heights and three styles of arrangements. The relationships among the decay coefficient, and the dimensionless wave height, submergence ratio, relative height and arrangement of the canopy are experimentally studied. 2D PIV technique is employed to measure the representative flow field inside the canopy. A four-deck flow structure is proposed for wave flow field over shallow submerged canopy. The characteristics of shear flow inside the aligned canopy region are discussed.  相似文献   

大黄鱼白细胞介素17受体E-like的分子特征及进化分析          下载免费PDF全文

丁扬  敖敬群  艾春香  陈新华 《应用海洋学学报》2016,35(1):107-115

白细胞介素17受体(Interleukin 17 receptor,IL-17R)家族与IL-17细胞因子家族介导的各类反应有着密切联系.IL-17RE-like(IL-17REL)是一类最新发现的IL-17受体,其结构与IL-17RE相似,但尚未发现其配体.本研究克隆得到大黄鱼(Larimichthys crocea)IL-17REL(Lyc IL-17REL)的全长c DNA,其开放阅读框全长1 659个核苷酸,推断可编码一个由552个氨基酸组成的蛋白,含有信号肽、胞外段、跨膜区和胞内段.与其他物种的IL-17REL相似,Lyc IL-17REL蛋白的胞外段具有一个保守的FN I-like结构域,而胞内段缺少IL-17受体家族保守的SEFIR(SEF and IL-17R)结构域.多序列比对分析表明Lyc IL-17REL与日本河豚(Takifugu rubripes)IL-17REL的氨基酸序列同源性最高,序列一致性可达57.0%.系统进化分析表明,脊椎动物的IL-17受体家族可分为2类,IL-17RA/RB/RD为一类,IL-17RC/RE/REL为一类.其中鱼类及高等脊椎动物的IL-17REL与IL-17RE亲缘关系最近,并且推测二者可能是由同一基因从硬骨鱼类之前的物种中分化而来.组织分布表明Lyc IL-17REL在所有被检测的组织中为组成型表达,在黏膜相关组织如小肠和鳃中的表达量最高.大黄鱼受嗜水气单胞菌(Aeromonas hydrophila)诱导刺激后,Lyc IL-17REL在其头肾及鳃中的基因转录水平均显著上调.这表明Lyc IL-17REL可能在细菌感染引起的免疫反应中起着重要作用.  相似文献   

Is Ziarat a Potential Site for Conventional or Unconventional Energy Resources?     

Sarfraz KHAN  Umair Bin NISAR  Khawar A. AHMED  Muhammad WASEEM  Waqas AHMED 《《地质学报》英文版》2018,92(4):1544-1557

A structural interpretation of the Ziarat block in the Balochistan region (a part of the Suleiman Fold and Thrust Belt) has been carried out using seismic and seismological data. Seismic data consists of nine 2.5D pre‐stack migrated seismic lines, whereas the seismological data covers the Fault Plane Solution and source parameters. Structural interpretation describes two broad fault sets of fore and back thrusts in the study area that have resulted in the development of pop‐up structures, accountable for the structural traps and seismicity pattern in terms of seismic hazard. Seismic interpretation includes time and depth contour maps of the Dungan Formation and Ranikot group, while seismological interpretation includes Fault Plane Solution, that is correlated with a geological and structural map of the area for the interpretation of the nature of the subsurface faults. Principal stresses are also estimated for the Ranikot group and Dungan Formation. In order to calculate anisotropic elastic properties, the parameters of the rock strength of the formations are first determined from seismic data, along with the dominant stresses (vertical, minimum horizontal, and maximum horizontal). The differential ratio of the maximum and minimum horizontal stresses is obtained to indicate optimal zones for hydraulic fracturing, and to assess the potential for geothermal energy reservoir prospect generation. The stress maps indicate high values towards the deeper part of the horizon, and low towards the shallower part, attributed to the lithological and structural variation in the area. Outcomes of structural interpretation indicate a good correlation of structure and tectonics from both seismological and seismic methods.  相似文献   

中国南部及邻区能源资源成矿区带数据集   总被引：1，自引：1，他引：0       下载免费PDF全文

游国庆  易荣龙  耿树方  陈炳蔚  庞健峰  杨志新  李佳林 《中国地质》2018,45(S1):66-75

能源矿产是国家安全和经济发展的战略资源,加强我国及周边地区油气和煤等能源资源的研究和开发利用意义重大。依据板块构造和大陆动力学以及油气与煤成藏地质学理论,以深部构造控制盆—山发育、盆—山耦合和热动力系统控制成矿的研究工作思路,应用70个油气田、471个煤田的基础地质资料,从沉积盆地发育的区域地质特征、成矿地质条件和成矿单元诸多方面,在地理信息系统（GIS）平台上提示了该区板块构造格局与能源资源的时空分布规律。中国南部及邻区能源资源可划分为3个成矿域,每个成矿域又可进一步划分为成矿省、含矿区（盆地）、矿田聚集区带、矿田（油气田）五个级别的成矿区域。数据集由构造带（断裂带和造山带）类型和时代、盆地类型和时代、能源矿产资源类型和丰度、成矿区带等元数据组成。该数据集是在区域大地构造研究的基础上,结合沉积盆地能源矿产（石油、天然气、煤）资源评价资料,综合分析成矿区带特征,利用地理信息系统（GIS）建立的一套完整的数据库,不仅是对中国南部及邻区区域地质认识和沉积盆地能源资源勘查工作成果的集成,而且为国家科学地引导地质找矿工作部署提供理论基础。  相似文献   

非常规油气地质岩心钻探专业术语的商榷          下载免费PDF全文

崔大勇 《探矿工程》2018,45(12):91-93,68

针对石油钻井工程与矿产地质钻探工程中使用的部分专业术语在理解和应用上存在的差异进行梳理,为了方便各项技术工作的融合、沟通交流和资料的收集与验收,希望相关专业术语在定义和使用上进一步规范和统一,以便于对今后非常规油气地质岩心钻探工作的开展能有所帮助。  相似文献   

Main technical innovations of Songke Well No.2 Drilling Project     

《China Geology》2018,1(2):187-201

Songke Well No.2, one of the main part of the scientific drilling project in Songliao Basin, which was drilled 7018 m and acquired the part of cores continuously from the Low Cretaceous to the Carboniferous and the Permian from the 2843 m deep, can be considered as the deepest continental drilling project in Asia. Aiming at the features of longer well sections, larger diameters and multiple spud-ins for coring of Songke Well No.2, this project broke through the “coring in small diameter and reaming in large diameter” spud-in drilling-completion procedures which are always used in large-diameter-well coring for continental scientific drilling projects in domestic and overseas and the drilling method of short-single-cylinder roundtrip footage. At the same time, “coring in the same diameter and completing drilling at one single diameter” was achieved at all φ311 mm and φ216 mm coring sections of more than one thousand meters long, high-efficient operation with “drilling long footage with drill tools combined in multi-cylinders” was achieved at deep coring section. Four world drilling records were created which include more than a thousand meters continuous coring at φ311 mm, and the footage per roundtrip footage at φ311 mm, φ216 mm and φ152 mm is all more than 30 m, all of these breakthroughs reduced at least 300 days for this project; moreover, considering the characteristics of formations that the geothermal gradient is high in the drilled sections and the inside-well temperature is over 240°C after drilling completion, a formate-polymer water-based mud system was developed by compounding attapulgite and sodium bentonite and by adding independently developed high-temperature stabilizer, which can provide critical technical support for successful well completion at 7018 m in the super-high-temperature environment It is the first time that the water-based mud is operated at the working temperature higher than 240°C in China; Besides, considering the high-quality requirement on cores imposed by the project, the method “mechanical cored is charge” to discharge core nondestructively on the ground was worked out, and more than 4000 m scatheless cores were discharged out of the drill pipes while maintaining original stratum structures.  相似文献   

全国地热资源调查评价与勘查示范工程进展   总被引：2，自引：0，他引：2       下载免费PDF全文

王贵玲  张薇  蔺文静  刘峰  甘浩男  付雷 《中国地质调查》2018,5(2):1-7

地热作为一种清洁能源,在我国经济发展与能源转型过程中正发挥着越来越重要的作用。“全国地热资源调查评价与勘查示范工程”自实施以来,主要开展了京津冀地区地热资源评价以及东南沿海和青藏高原东部干热岩的勘查等工作。这些工作的开展在获得一系列科研突破成果的同时,也解决了大量地热开发的工程问题,积累了大量成果和经验。该文对工程取得的进展及成果进行了总结,对工作开展中出现的问题进行了探讨,可用于指导我国地热资源勘查开发工作。  相似文献   

Periglacial Geomorphology,Wiley-Blackwell,Chichester (2018), 454 pp, £60.00 (paperback), ISBN 9781405100069     

John F. Hiemstra 《Proceedings of the Geologists' Association. Geologists' Association》2018,129(2):251-252

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New polymorphic psyllipsocids from Burmese amber (Psocodea: Psyllipsocidae)     

《Cretaceous Research》2018

Annulipsyllipsocus andreneli gen. et sp. nov. and A. inexspectatus gen. et sp. nov., the first records of the Psyllipsocidae from the Cretaceous amber of Myanmar are described, illustrated and their taxonomic position discussed. The new genus is characterized by antennae with 16 segments; flagellomeres with secondary annulations; radial cell closed, five-angled, bulged on its R1 border; triangular pterostigma. Species belonging to Annulipsyllipsocus gen. nov. are polymorphic. The described taxa represent the earliest evidence for polymorphism in Psocodea. A checklist of all known species of Psyllipsocidae is given.  相似文献