共查询到20条相似文献，搜索用时 46 毫秒
1.
为了对塔里木盆地中石化探区含氦气藏资源进行调查研究,在广泛调研前人氦气研究成果的基础上,采集了塔里木盆地中石化探区9个井区、6个层系的22个天然气样品,利用质谱法对天然气中的氦气含量进行分析,并探讨了不同地区氦气成藏的主控因素。结果表明,巴什托地区BK3井巴楚组天然气2个样品氦气含量为0.103%、0.116%,达到了含氦气藏的标准; 顺北地区奥陶系6个天然气样品氦气含量在0.026%~0.151%之间,仅1个样品达到含氦气标准。塔北地区寒武系—古近系32个天然气样品的氦气含量在0.01%~0.08%之间,均未达到含氦气标准。塔里木盆地氦气成藏主要受氦源、深大通源断裂、成藏期次、保存条件等因素共同控制。巴什托地区、顺北地区是氦气的有利聚集区带,塔北地区氦气成藏条件相对不利。 相似文献
2.
为了对塔里木盆地中石化探区含氦气藏资源进行调查研究,在广泛调研前人氦气研究成果的基础上,采集了塔里木盆地中石化探区9个井区、6个层系的22个天然气样品,利用质谱法对天然气中的氦气含量进行分析,并探讨了不同地区氦气成藏的主控因素。结果表明,巴什托地区BK3井巴楚组天然气2个样品氦气含量为0.103%、0.116%,达到了含氦气藏的标准; 顺北地区奥陶系6个天然气样品氦气含量在0.026%~0.151%之间,仅1个样品达到含氦气标准。塔北地区寒武系—古近系32个天然气样品的氦气含量在0.01%~0.08%之间,均未达到含氦气标准。塔里木盆地氦气成藏主要受氦源、深大通源断裂、成藏期次、保存条件等因素共同控制。巴什托地区、顺北地区是氦气的有利聚集区带,塔北地区氦气成藏条件相对不利。 相似文献
3.
弄清深部地层氦气运移与天然气（主要是甲烷气成分）成因对从事油气勘探和开发有着十分重要的指导意义。日本石油地质人员为此做了深入细致的研究工作。他们以本土东北部油气勘探中氦气样品同位素比值为主要研究对象,在Ｇｒｅｅｎ Ｔｕｆｆ地区地层间氦气运移问题的研究中,他们发现该地区＾３Ｈｅ／＾４Ｈｅ比值非常高,分析结果表明是岩浆来源。 相似文献
4.
中国地质调查局油气资源调查中心牵头组织实施的“非常规油气地质调查工程”,开展了黑龙江省鸡西地区煤系气地质调查、松辽盆地及外围油页岩地质调查、松辽盆地西斜坡油砂原位试采工程、陆域天然气水合物地质调查与祁连山木里天然气水合物野外长期观测站建设、陕西关中地区氦气地质调查和非常规油气资源国情调研等工作,获取了大量基础数据,取得了黑鸡地1井、黑鸡地3井、黑鸡地4井等一系列突破性成果和重要进展,初步掌握了我国油页岩、油砂、陆域天然气水合物、氦气以及鸡西盆地煤系气等非常规油气资源潜力。该工程在煤系气、油页岩、氦气等领域产生重要影响,提振了非常规油气勘探开发信心,推动了科技创新与地质调查深度融合,促进了非常规油气学科发展。 相似文献
5.
通过对中国富氦天然气资源现有研究成果进行系统整理、分析,总结了中国富氦天然气研究的发展现状及进展,提出了未来中国氦气资源的研究方向。中国对氦气资源的研究历程可以划分为4个阶段:认知阶段、利用阶段、基础研究阶段及提取技术研究阶段。从分布规律看,中国富氦天然气分布具有小型盆地满盆含气、大中型盆地局部含气的特点,赋存层位以奥陶系、二叠系、古近系和新近系为主。组分特征表明,富氦天然气中氦气的含量普遍小于1%,仅渭河盆地部分样品氦气含量较高,最大值可达4.942%。氦同位素特征表明,中国氦气以壳源为主,壳幔混合为辅。分析认为,影响壳源氦分布的主控因素为氦气源岩,而影响幔源氦分布的主控因素为深大断裂。建议今后中国应以壳源氦研究为重点,针对不同区域不同成因的氦气,采用不同的研究方法。 相似文献
6.
氦气作为一种用途广泛的稀有非烃类气体,在一些油气藏天然气组分中不断被检测到,其中不少达到或超过了工业开采标准。从综合利用氦气资源考虑,对塔里木盆地西北部氦气富集特征和成藏条件进行了分析。通过石油钻井和测试资料分析表明,塔里木盆地雅克拉、沙西2号、巴什托和亚松迪等油气藏天然气组分中氦气含量较高,氦气作为天然气伴生物而富集成藏。其储集层位为下奥陶统、上石炭统、下二叠统和下白垩统,主要富集在构造圈闭高部位或油气藏顶部;其成因特征以壳源氦为主,有少量幔源氦的加入;二叠纪火山活动提供了丰富的氦源;深达基底的断层为深部氦气向上运移的通道,良好的封盖条件有利于氦气富集成藏与保存。 相似文献
7.
氦气是一种重要的战略稀有资源,关系国家安全和高新技术产业发展.但我国贫氦且绝大部分依赖进口,资源安全形势十分严峻,因此开展氦气资源调查非常迫切.通过全国七大含油气盆地及其他地区氦气资源及成因系统调研,明确我国中西部含油气盆地天然气中氦气基本为壳源放射成因,其富集受富含U、Th的酸性岩或基底的分布、背斜圈闭及断裂共同控制.东部郯庐断裂带两侧含油气盆地中氦气为壳源和幔源混合成因,其富集受断裂控制明显.地热或温泉的水溶气中,含量较高的氦气主要为壳源.优选了氦气显示良好、但存在不确定性的塔里木盆地和田河气田及周缘开展氦气资源系统勘查.通过对和田河气田及周缘11口井天然气样品精细取样、分析,首次发现和田河气田为富氦气田,氦气体积含量为0.30%~0.37%（平均0.32%）,为壳源成因,折算氦气探明储量1.959 1×108 m3,是我国发现的首个特大型富氦氦气田.因此建议:（1）加快建设和田河气田氦气分离、液化装置,实现气田开发整体效益最大化;（2）尽快论证建设"塔里木盆地氦气战略储备基地"的可行性,开展全国主要含油气盆地氦气资源系统调查;（3）加强氦气成藏理论研究,指导氦气资源勘探. 相似文献
8.
9.
陕西渭河盆地富氦天然气异常的影响因素 总被引：1，自引：0，他引：1
通过对渭河盆地22口钻井中富氦天然气的同位素分析,认为盆地中氦气以壳源氦为主,局部伴有少量幔源氦。针对盆地中氦气异常的现象,结合对盆地特性的分析,认为渭河盆地氦气异常的影响因素包括:1盆地地壳较薄,莫霍界面呈明显的隆起,热流体活动发育,有利于氦气运移;2花岗岩体和通过水系统运移到沉积地层中的放射性元素衰变,为氦气成藏提供了有力的气源保障;3盆地内十分发育的断裂体系,不仅为氦气运移提供了连通通道,还在活动过程中释放氦气,为氦气局部聚集提供了有利空间。 相似文献
10.
11.
Emily Keeble David I. Whiteside Michael J. Benton 《Proceedings of the Geologists' Association. Geologists' Association》2018,129(2):99-119
Pant-y-ffynnon Quarry in South Wales yielded a rich cache of fossils in the early 1950s, including articulated specimens of new species (the small sauropodomorph dinosaur Pantydraco caducus and the crocodylomorph Terrestrisuchus gracilis), but no substantial study of the wider fauna of the Pant-y-ffynnon fissure systems has been published. Here, our overview of existing specimens, a few described but mostly undescribed, as well as freshly processed material, provides a comprehensive picture of the Pant-y-ffynnon palaeo-island of the Late Triassic. This was an island with a relatively impoverished fauna dominated by small clevosaurs (rhynchocephalians), including a new species, Clevosaurus cambrica, described here from a partially articulated specimen and isolated bones. The new species has a dental morphology that is intermediate between the Late Triassic Clevosaurus hudsoni, from Cromhall Quarry to the east, and the younger C. convallis from Pant Quarry to the west, suggesting adaptive radiation of clevosaurs in the palaeo-archipelago. The larger reptiles on the palaeo-island do not exceed 1.5?m in length, including a small carnivorous crocodylomorph, Terrestrisuchus, and a possible example of insular dwarfism in the basal dinosaur Pantydraco. 相似文献
12.
The effect of water on accessory phase solubility in subaluminous and peralkaline granitic melts 总被引：4，自引：0，他引：4
The solubilities of columbite, tantalite, wolframite, rutile, zircon and hafnon were determined as a function of the water contents in peralkaline and subaluminous granite melts. All experiments were conducted at 1035 °C and 2 kbar and the water contents of the melts ranged from nominally dry to approximately 6 wt.% H2O. Accessory phase solubilities are not affected by the water content of the peralkaline melt. By contrast, solubilities are affected by the water content of the subaluminous melt, where the solubilities of all the accessory phases examined increase with the water content of the melt, up to 2 wt.% H2O. At higher water contents, solubilities are nearly constant. It can be concluded that water is not an important control of accessory phase solubility, although the water content will affect diffusivities of components in the melt, thus whether or not accessory phases will be present as restite material. The solubility behaviour in the subaluminous and peralkaline melts supports previous spectroscopic studies, which have observed differences in the coordination of high field strength elements in dry vs. wet subaluminous granitic glasses, but not for peralkaline granitic glasses. Lastly, the fact that wolframite solubility increases with increasing water content in the subaluminous melt suggests that tungsten dissolved as a hexavalent species. 相似文献
13.
Muriel Rocher Stéphane Baize Stéphane Jaillet Edward Marc Cushing Yannick Lozac&#x;h Francis Lemeille 《Comptes Rendus Geoscience》2003,335(8):701-708
Calcite samples were extracted both from the rock matrix and the superficial coating of a karstified fault plane of an underground quarry, located in the eastern border of the Paris basin. The karstification is dated as Quaternary. Analysis of mechanical calcite twinning reveals that only the calcite matrix has also undergone a compression trending WNW that can be attributed to the Mio-Pliocene alpine collision. Both coating and matrix have undergone a strike-slip regime with σ1 roughly trending north–south, that could correspond to the regional present-day state of stress, a strike-slip compression rather trending NNW, modified by local phenomena. To cite this article: M. Rocher et al., C. R. Geoscience 335 (2003). 相似文献
14.
正20141756 Chen Ruige(Mathematical College,China University of Geosciences,Beijing100083,China);Zhou Xun Numerical Simulation of Groundwater Level Fluctuation in a Coastal Confined Aquifer with Sloping Initial Groundwater Level Induced by the Tide(Geological Bulletin of China,ISSN1671-2552,CN11-4648/P,32(7),2013,p.1099-1104,6 illus.,16 refs.) Key words:confined water,groundwater level 相似文献
15.
正20141408 Cai Jia(Institute of Geology,Chinese Academy of Geological Sciences,Beijing100037,China);Liu Fulai Petrogenesis and Metamorphic P-T Conditions of Garnet-Spinel-Biotitebearing Paragneiss in Danangou Area,Daqingshan-Wulashan Metamorphic Complex Belt(Acta Petrologica Sinica,ISSN1000-0569,CN11-1922/P,29(7), 相似文献
16.
17.
正20142386An Guoying(China Aero Geophysical Survey and Remote Sensing Center for Land and Resources,Beijing 100083,China)Application of Satellite Remote Sensing in Regional Hydrogeological Investigation:Taking Cenozoic Strata in Wenquan Sheet(1∶250 000)of Karakoram Range as an Example(Geosci- 相似文献
18.
正20141016An Chengbang(Key Laboratory of Western China’s Environmental Systems,Ministry of Education,Lanzhou University,Lanzhou 730000,China);Zhao Yongtao Lake Records during the Last Glacial Maximum from Xinjiang,NW China and Their Climatic Impli- 相似文献
19.
正20141538 Cao Qing(School of Earth Sciences and Engineering,Xi’an Petroleum University,Xi’an 710065,China);Zhao Jingzhou Characteristics and Significance of Fluid Inclusions from Majiagou Formation,Yichuan Huangling Area,Ordos Basin(Advances in Earth Science,ISSN1001-8166,CN62-1091/P,28(7),2013,p.819-828,7 illus.,3 tables,43 refs.) 相似文献
20.
正20142002 Wei Hualing(Institute of Geophysical and Geochemical Exploration,Chinese Academy of Geological Sciences,Langfang065000,China);Zhou Guohua Element Content and Mineral Compositions in Different Sizes of Soil in Tongling Area,Anhui Province(Geological Bulletin of China,ISSN1671-2552,CN11-4648/P,32(11),2013,p.1861 相似文献