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为了弄清塔里木盆地温宿凸起构造演化、油源条件及圈闭类型等关键地质问题,通过石油地质条件综合分析,结合样品测试分析,查清了温宿地区油气成藏的关键因素,提出了石油地质条件新认识。结果表明: 温宿凸起为一个继承性发育的古隆起,构造演化主要经历了4个发展阶段; 温宿凸起油气藏类型以构造-岩性型为主; 温宿凸起不发育烃源岩,但发育沟通拜城富烃凹陷的高效输导体系; 温宿凸起新近系吉迪克组油气藏类型以构造-岩性型为主; 油气的生成、运移、聚集主要发生在新近纪—第四纪,具有明显的晚期复式成藏特点; 优越的盖层条件是温宿吉迪克组油气藏形成的重要因素。 相似文献
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为了弄清塔里木盆地温宿凸起构造演化、油源条件及圈闭类型等关键地质问题,通过石油地质条件综合分析,结合样品测试分析,查清了温宿地区油气成藏的关键因素,提出了石油地质条件新认识。结果表明:温宿凸起为一个继承性发育的古隆起,构造演化主要经历了4个发展阶段;温宿凸起油气藏类型以构造-岩性型为主;温宿凸起不发育烃源岩,但发育沟通拜城富烃凹陷的高效输导体系;温宿凸起新近系吉迪克组油气藏类型以构造-岩性型为主;油气的生成、运移、聚集主要发生在新近纪-第四纪,具有明显的晚期复式成藏特点;优越的盖层条件是温宿吉迪克组油气藏形成的重要因素。 相似文献
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下扬子地区“三气一油”钻探发现及成藏地质条件——以皖南港地1井钻探发现为例 总被引：1，自引：0，他引：1
下扬子地区经历了多期构造运动,地质条件复杂,对油气保存条件产生了重要影响。页岩油气具有自生自储的特性,与常规油气相比,对保存条件的要求较低,在下扬子地区具备形成页岩油气藏的潜力。通过港地1井钻探,在下扬子地区二叠系大隆组和龙潭组获得了页岩油、页岩气、煤层气和致密砂岩气"三气一油"的发现,与常规油气"上气下油"不同,港地1井油气呈现"上油下气"式非常规油气储集方式。大隆组富有机质页岩厚度约70m,地层倾角10°～20°,现场解吸获取的页岩气样品甲烷含量达80%,有机质丰度为1.9%～2.3%,平均值约2.0%,有机质成熟度(Ro)为1%～1.25%,平均值约1.2%,具备生成页岩油气的良好基础。基于港地1井的钻探发现,认为下扬子地区构造运动影响弱、盆地规模小、保存条件好的"小而整"的坳陷或盆地具备形成页岩油气藏的地质条件。 相似文献
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在钻井油气勘探中，识别油气异常及其属性判别是油气层评价的一项重要工作。为了进行钻井地层中油异常的识别及属性判别，需要一定的手段和方法。通过塔里木盆地北部某井钻井现场轻烃录井工作，应用轻烃分析资料识别该井的油气异常；根据＂轻烃特征成分＂、＂烃组分湿度值＂及＂轻烃流体性质特征＂等判别方法，对油气异常的属性进行判别，其结果与实际钻井地质资料相符。据钻井地质资料与轻烃分析资料综合解释结果表明，在该井所所处地区获得油气突破的关键是寻找该井所属构造的高点。 相似文献
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以某地下水源热泵系统工程为例,依据实测渗水试验及抽水一回灌试验数据,建立研究区地下水流数值模拟模型,分析了该地区适宜的井群布置方式及井间距,并定量研究了该布置方式下对地下水流场的影响,为该地区浅薄含水层地温能资源的开发利用提供技术支撑。结果表明：该类浅薄含水层地温能开发利用井群布置方式中,抽水井布设在地下水流场的下游、回灌井布设在地下水流场的上游更为适宜,合理井间距确定为110m;在适宜井间距条件下,对水位最大影响范围约为6．50km2,温度变幅大于1℃的最大范围约为0．28km2。 相似文献
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D. H. Miller 《GeoJournal》1984,8(3):211-219
In many climatic regions the interface between the earth and the atmosphere consists of a mosaic of ecosystems, each possessing specific properties of absorbing and storing energy and matter. Large contrasts in these properties create differences in interface temperature and moisture, which, in combination with contrasts in roughness, produce differences in sensible and latent heat fluxes injected into the atmosphere, so that the boundary layer experiences rapid alterations to its structure and transport of energy and matter. In consequence, good data on fluxes from individual ecosystems and their contrasts are essential both to understanding the functioning of the boundary layer and energy/mass accounting at source and sink ecosystems. 相似文献
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D. H. Miller Dr. 《GeoJournal》1984,8(2):211-219
In many climatic regions the interface between the earth and the atmosphere consists of a mosaic of ecosystems, each possessing specific properties of absorbing and storing energy and matter. Large contrasts in these properties create differences in interface temperature and moisture, which, in combination with contrasts in roughness, produce differences in sensible and latent heat fluxes injected into the atmosphere, so that the boundary layer experiences rapid alterations to its structure and transport of energy and matter. In consequence, good data on fluxes from individual ecosystems and their contrasts are essential both to understanding the functioning of the boundary layer and energy/mass accounting at source and sink ecosystems. 相似文献
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地质图空间数据库的建立对于基础地质图件的快速更新、信息资源共享以及基础地质科学研究具有重要意义。全国1∶100万地质图空间数据库(2005年版本)是以1∶50万地质图数据库为基础,充分吸收近年来1∶25万、1∶5万区域地质调查的新资料新成果,应用当代最先进的地质科学理论、现代信息技术和先进制图学理论,使用中国自主开发的MapGIS平台,结合ArcGIS、Access等软件进行研究建立的。数据库包括地理底图库、地质图库、元数据库、外挂岩石地层库,数据量约1.6GB。数据库管理系统具有较强的图幅检索、查询、自动成图、自动生成图例等功能。 相似文献
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《沉积与特提斯地质》2005,25(1):148-152
获得了近百万平方千米、精度达1×10-5m/s2的重力基础图件和处理解释图件;根据重力资料对大地构造进行了分区;推断了一批断裂构造;追踪、圈定了大型隐伏或半隐伏岩浆岩带;对多金属成矿带和油气盆地进行了推测;对区内的基底和沉积财内部的主要密度界面进行了研究,首次编制了中生界底和古生界底两个密度界面埋深图;对地壳厚度和地壳的均衡特征进行了研究. 相似文献
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青藏高原康西瓦—狮泉河地区1∶100万区域重力调查成果与进展 总被引：1，自引：0，他引：1
《沉积与特提斯地质》2005,25(1):153-154
提供岩石磁性参数统计表、各地层岩石密度统计表和布格重力异常图,并做初步分析. 相似文献
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贵州省赤水地区下三叠统嘉陵江组的沉积相属于陆表海碳酸盐台地沉积,本文结合野外露头及井下钻遇情况,划分出了多种沉积相类型,指出滩亚相及云坪微相是本区有利于嘉二1-嘉一和嘉五1 层段油气储层发育的沉积相带,并以"单因素分析多因素综合作图法"为参考,得出嘉二1层段的分岩类厚度百分含量分布趋势,在此基础上对嘉二1-嘉一和嘉五1层段等储层有利层段的沉积相进行了分析.研究表明,除去宝元构造东南部、五南构造、太9井区及雪1井区外,区内大部分地区嘉二1-嘉一层段都发育较为储层有利的云坪微相,部分地区同时发育嘉一段顶部的滩亚相.嘉五1云坪微相的发育情况显示出南东方向较北西方向为好,其中宝元构造中南部最好,旺隆构造次之,雪柏坪构造推测应较好,太和、五南构造较差.台内滩沉积则仅局限于旺隆构造的旺12、旺6井附近. 相似文献
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CSDP core Yaxcopoil-1 was drilled to a depth of 1,511 m within the Chicxulub crater. An organic-rich marly limestone near the base of the hole (1,495 to 1,452 m) was deposited in an open marine shelf environment during the latest Cenomanian (uppermost Rotalipora cushmani zone). The overlying sequence of limestones, dolomites and anhydrites (1,495 to 894 m) indicates deposition in various carbonate platform environments (e.g., sabkhas, lagoons). A 100-m-thick suevite breccia (894–794 m) identifies the Chicxulub impact event. Above the suevite breccia is a dolomitic limestone with planktic foraminiferal assemblages indicative of Plummerita hantkeninoides zone CF1, which spans the last 300 ky of the Maastrichtian. An erosional surface 50 cm above the breccia/dolomite contact marks the K/T boundary and a hiatus. Limestones above this contact contain the first Tertiary planktic foraminifera indicative of an upper P. eugubina zone P1a(2) age. Another hiatus 7 cm upsection separates zone P1a(2) and hemipelagic limestones of planktic foraminiferal Zone P1c. Planktic foraminiferal assemblages of Zone Plc to P3b age are present from a depth of 794.04 up to 775 m. The Cretaceous carbonate sequence appears to be autochthonous, with a stratigraphic sequence comparable to late Cretaceous sediments known from outside the Chicxulub crater in northern and southern Yucatan, including the late Cenomanian organic-rich marly limestone. There is no evidence that these sediments represent crater infill due to megablocks sliding into the crater, such as major disruption of sediments, chaotic changes in lithology, overturned or deep dipping megablocks, major mechanical fragmentation, shock or thermal alteration, or ductile deformation. Breccia units that are intercalated in the carbonate platform sequence are intraformational in origin (e.g., dissolution of evaporites) and dykes are rare. Major disturbances of strata by the impact therefore appear to have been confined to within less than 60 km from the proposed impact center. Yaxcopoil-1 may be located outside the collapsed transient crater cavity, either on the upper end of an elevated and tilted horst of the terrace zone, or even outside the annular crater cavity. The Chicxulub site thus records a large impact that predates the K/T boundary impact and mass extinction. 相似文献
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Abstract Studies of the deformation styles, formation types and isotopic age data indicate that the Altaides has successively experienced 5 stages of orogeny: (1) the Kanas orogeny forming the angular unconformity between the Baihaba Formation (O3) and the Habahe Group (Z-O2); (2) the Daqiao orogeny (S3-D1-2) giving rise to the early Hercynian quasi-aulacogen extensional continental crust of the area; (3) the Altay orogeny (middle- late Hercynian) leading to the oblique intracontinental collision and the formation of large shear arc-shaped thrust system and representing a strong orogeny stage; (4) the pan-Altay orogeny (latest Hercynian-Indosinian) resulting in the uplifting and erosion of the mountains as a whole; (5) the Himalayan movement causing the rejuvenation of fault systems and block uplift of the Altaides since the Cenozoic. 相似文献
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霍正旺 《沉积与特提斯地质》2013,(3):62-68
本文以地层切片技术为基础,以松辽盆地xblpl工区嫩江组萨尔图油层为例,分析了该技术在沉积环境研究中的应用。研究表明,高精度三维地震工区为开展地震沉积学研究提供了方便的基础资料,在对研究区内各个层序界面精细解释的基础上,制作了不同三维地震工区的一系列的地层切片,这些切片提供了萨尔图油层不同沉积体系的分布特征,刻画了三角洲和湖泊沉积体系在不同时期的展布范围。地层切片技术有利于层位的等时分析和宏观沉积体系的刻画。值得注意的是,地层切片属性分析图上,并不是所有的强振幅都代表砂岩而弱振幅都代表泥岩,需要结合岩心相、测井相进行校正,方可准确识别出沉积体系。 相似文献