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东天山图拉尔根镁铁—超镁铁质岩体主要包含角闪橄榄岩相、辉石橄榄岩相和辉长岩相,辉石为各岩相主要造岩矿物之一。采用电子探针和LA-ICPMS技术对不同岩相中辉石的主量、微量元素进行测试分析,以探讨岩体的性质、来源和演化过程。东天山图拉尔根镁铁—超镁铁质岩体中斜方辉石属古铜辉石,而单斜辉石则为透辉石和顽透辉石。辉石温压计算表明其结晶温度为978℃~1059℃,结晶压力主要为0.71~4.80kbar。岩体母岩浆为亚碱性拉斑玄武质岩浆,是被俯冲板片交代过的亏损地幔发生13%~20%部分熔融的产物。岩体内不同岩相中辉石的化学成分变化较小,表明岩体的结晶分异程度较低,其中辉长岩相的结晶程度较角闪橄榄岩相和辉石橄榄岩相略高;岩浆上侵过程中,角闪橄榄岩相和辉石橄榄岩相受到富硅地壳物质的混染,而辉长岩相受到富铝围岩的混染。结晶分异作用和富硅地壳的混染是引起图拉尔根岩体硫饱和及硫化物熔离的重要因素。 相似文献
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陕西富平地区上奥陶统赵老峪组为深水盆地边缘至深水斜坡沉积环境,发育深水原地沉积、等深流沉积及重力流沉积。以野外实测剖面、岩相特征等资料为基础,结合米兰科维奇理论、天文地层学、古海洋学以及古气候学,系统研究该地区等深流强度与古气候、海平面、古盐度的关系。结果表明:Fischer图解可以客观、准确地反映深水沉积地层相对海平面变化;深水沉积及等深流沉积中不同级次旋回垂向组合关系记录了米兰科维奇特性,即小级别旋回在垂向上有序地按照1∶4或者1∶5的形式叠加构成较大级别旋回;等深流强度受米兰科维奇旋回影响,呈多周期弱→强→弱递变;等深流强化周期约为0.1Ma。 相似文献
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In the past two decades, numerous large-diameter rock-socketed piles were constructed in China to support foundations of skyscrapers, great bridges or to retain soil in potential geological hazard areas. However, drilling large-diameter rock-socketed pile holes with conventional drilling method such as rotary drilling or cable tool drilling is time-consuming and the cost is usually very high. In order to drill large-diameter rock-socketed pile holes faster at relatively low cost, the FGC15A large-diameter DTH air hammer drilling system was developed in 1987 and was given the second-class award by Ministry of Geology and Mineral Resources in 1991. Since it was innovated the drilling system has been used in more than twenty important and tough projects on land, and wonderful results were acquired. At the same time the large-diameter DTH air hammer drilling system was improved continuously. The FGC15D is the latest version of the technique. 相似文献
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FGC-15D large-diameter DTH air hammer drilling system and its application in offshore rock-socketed pile hole drilling 总被引：1，自引：0，他引：1
Kun YIN Jianming PENG Maosen WANG Zhanjiang ZHOU 《东北亚地学研究》2006,9(2):138-140
In the past two decades,numerous large-diameter rock-socketed piles were constructed in China to support foundations of skyscrapers,great bridges or to retain soil in potential geological hazard areas.However,drilling large-diameter rock-socketed pile holes with conventional drilling method such as rotary drilling or cable tool drilling is time-consuming and the cost is usually very high.In order to drill large-diameter rock-socketed pile holes faster at relatively low cost,the FGC15A large-diameter DTH air hammer drilling system was developed in 1987 and was given the second-class award by Ministry of Geology and Mineral Resources in 1991.Since it was innovated the drilling system has been used in more than twenty important and tough projects on land,and wonderful results were acquired.At the same time the large-diameter DTH air hammer drilling system was improved continuously.The FGC15D is the latest version of the technique. 相似文献
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孤东油田植被演化遥感分析 总被引：2，自引：0，他引：2
本文利用从1984-2001年多时相的TM和ASTER等遥感数据,对孤东油田近二十年来的植被演化规律进行研究,分析油田开发的不同阶段对植被的影响。结果表明,在油田开发初期,植被遭到毁灭性的破坏,使区域生态环境严重恶化。油井建成后,被破坏的生态环境逐步得到恢复,并向着顺向演替的方向发展,目前孤东油田的生态环境正在向着良性循环方向发展。 相似文献
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本文对北部湾盆地涠西南凹陷的地层、沉积环境、圈闭特征及其形成作了概括的归纳,并在论证生、储、盖条件的基础上,提出了油气运移、分布规律:油气藏沿大断裂分布,受成熟生油岩制约;②号大断裂对油气的分区运移起控制作用;油气以侧向运移为主。据此,可预测北部湾盆地的其它凹陷油气运聚规律。 相似文献
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基于循环注蒸气和烟气激励的海上稠油开采技术 总被引：1，自引：1，他引：0
通过实验和油藏数值模拟,研究循环注蒸气和烟气激励的加热降黏、气体溶解降黏、气体扩大加热腔与减少热损失、蒸气与气体协同增产效应等开采机理,优化注入蒸气和烟气温度、烟气蒸气体积比、周期蒸气和气体注入量等参数,建议注入蒸气与烟气的温度高于300℃,在大气压下烟气蒸气体积比为0.4～0.6.在渤海稠油油田开展4口井循环注蒸气和烟气激励开采的现场试验.结果表明,循环注蒸气和烟气激励开采后稠油井平均日产油量达到冷采的3倍以上,最高日产油量超过100m3,周期产油量达到1.0×104 m3左右.基于循环注蒸气和烟气激励的海上开采稠油技术可以提高海上稠油开采速度和采收率,有潜力成为未来海上稠油油田的主要热采开发方式. 相似文献
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文章论述了建设办公自动化网络系统的意义,介绍原广西地矿厅(局)自1996年建立办公自动化网络系统以来取得的成绩及存在问题,提出一些改进意见和建议. 相似文献
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下泥盆统托让格库都克组高铝玄武岩产自东准噶尔青河地区野马滩一带。高铝玄武岩富含大量斜长石斑晶,属亚碱性系列。它们具有显著高A12O3(质量分数为17.22%～21.31%),低SiO2(47.12%～49.45%),高TFe2O3(8.50%～11.98%)、MgO(2.64%～5.63%)、Ni((5.75～27.87)×10-6)、Cr((0.99～25.62)×10-6),以及高Sm/Yb值(1.13～1.96)、U/Th值(0.42～0.81)的特征,相对富集大离子亲石元素和亏损高场强元素,显示出典型的高铝玄武岩地球化学特征。进一步研究表明,其岩浆来源于受俯冲带流体交代地幔楔的部分熔融。此外,高Sr/Y值(43.16～47.07)和低Y(质量分数为(15.69～19.09)×10-6)、Yb((1.64～2.13)×10-6)显示玄武质岩浆源区有俯冲带洋壳物质的加入。高Al特征很可能与高压条件下斜长石的滞后结晶有关。地球化学特征表明,高铝玄武岩形成于岛弧环境。东准噶尔早泥盆世高铝玄武岩的发现丰富了本区火山岩岩类信息资料,并为构造演化研究提供了重要依据。 相似文献
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为了充分展示全球油气地质综合研究的数据资料,提供数据库对外信息服务的窗口,基于ArcGIS Server技术、Visual studio.NET 开发平台和ORACLE数据库管理系统,构建了B/S结构的全球油气地质信息共享系统。本系统是WebGIS应用平台,提供了信息发布、地图浏览、图形查询、空间分析、专题制图等功能,以图形、文字、图表等方式展示研究区的基础地理、基础地质、油气地质、资源潜力、投资环境等方面的最新成果,为公众和研究人员提供了高效的信息访问途径,为国家油气资源管理和能源决策提供了可靠的信息支撑,实现了重要信息社会化共享的目标。文章简单介绍了ArcGIS Server,重点描述系统框架、数据分类和功能模块,旨在探讨ArcGIS Server的网络信息共享系统的设计与实现。 相似文献
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ENG Mohammed Al Zubairi 《东北亚地学研究》2001,(2)
1 ＩｎｔｒｏｄｕｃｔｉｏｎＴｈｅＲｅｄＳｅａｉｓａｎａｒｒｏｗｉｎｌａｎｄｓｅａ ,ｓｅｐａｒａｔｉｎｇｔｈｅＡｒａｂｉａｎＰｅｎｉｎｓｕｌａ,ＷＡｓｉａ,ｆｒｏｍＮＥＡｆｒｉｃａ .ＩｔｅｘｔｅｎｄｓＮＷｆｒｏｍｔｈｅｓｔｒａｉｔｏｆＢａｂＡｌＭａｎｄａｂ ( 相似文献
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The high-mineral contents of some thermal waters are believed to have medicinal properties. Numerous spas and bathhouses might be built at these hot springs to take advantage of theses supposed healing properties such as skin diseases, rheumatism and so on. This paper is to find thermal reservoir and to classify the kinds of water. The majority of thermal springs are found discharging from igneous centers of Tertiary and Quaternary volcanic fields of the western Yemen (research area). Structurally these volcanisms are connected to N-NW faults that are parallel to the main Red Sea trend. Temperature and pH values of the thermal spring range 37℃～96℃, and 6.3 ～8.7 respectively. The Yemeni thermal waters indicate high variability in composition since they are ofNa (K) -C1, Na-HCO3 and Ca (Mg) -SO4 types, whereas the surficial waters have the typical worldwide Ca (Mg) -HCO3 composition. Different liquid phase geothermometers,such as SiO2, K2/Mg and Na/K. Estimated reservoir temperatures ranging 70 ～ 140℃ perform equilibrium temperature evaluation of the thermal reservoirs. 相似文献
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Daqing Oilfield has carried out the production of polymer flooding was promoted since in 1996.Presently, polymer flooding is very successful in several production plants of Daqing Oilfield, and getting into industrialisation production. It has played a very important role in maintaining the oilfield stable production of over 50 million tons of oil.But the high permeability variation is serious, resulting in polymer production in some production wells recylingly and production concentration increasing slowly, which adversely affects polymer flooding efficiency.Colloid dispersion gels (CDG) is a unique in- depth permeability modification process. It can reduce in- depth reservoir permeability variation by moving into highly permeable, water saturated zones and providing high resistance to subsequent water injection in those zones, so that oil can be produced from tighter rock. So CDG can enlarge volumetric sweep, and improve oil recovery efficiency.We had a CDG pilot programme in Daqing Oil Field in 1999, now this pilot has been entering into effective period with produing more oil and less water.Introduction 相似文献
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ENG Mohammed Al Zubairi 《世界地质(英文版)》2001,4(2)
The Red Sea is a pericratonic upper Tertiary basin which developed on the continental margin of Arabia. It is characterized by halokinetic tectonics in the upper structural stage and block- Rifting in the lower structural stage. This margin is overprinted on a Pre - rift Mesozoic platform. Hydrocarbon exploration interest in the Yemeni Red Sea sector and Offshore area (Tihama Basin) is based on three objectives, which cross pond to stages in geotectonic evolution; Mesozoic Pre - rift targets; Miocene Syn- Rift Salt targets; and upper Miocene- Pliocene Post - rift drift sequences. Reservoirs with appropriate sealing units ( salt or shale ) have been recorded. Models of source rock maturation using observed geothermal gradients are consistent with analytical results, and prove of oil and gas generation. Most traps are described as faulted, fault - blocks, listric - faults or structural. The evaporite group mainly consists of Halite and Anhydrite, that exhibits a strong halokinesis affecting a structural style- of Infra and Intra evaporite sequences in offshore (Tihama basin ). 相似文献
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Nabil A. AL-SHWAFI Abdulhakim AL-KHOLIDI Aref M. O. AL-JABALI and Nengjuan ZHOU 《世界地质(英文版)》2009,12(3):160-163
A field work has been carried out to identify the occurrence of oil and oil products pollution in mangrove sediment from Red Sea of Yemen. The concentration of total petroleum hydrocarbons is from 700 ng/g at Kamaran Island station to 400 ng/g at Al-Hodiedah station, and the total organic carbon ( TOC) in samples ranges from 0.07% at Dhubab station to 0.03% at Kamaran Island station. This pollution is as a result of localized oil pollution and /or heavy ship traffic in the Red Sea and Gulf of Aden. 相似文献
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A field work has been carried out to identify the occurrence of oil and oil products pollution in mangrove sediment from Red Sea of Yemen. The concentration of total petroleum hydrocarbons is from 700ng/g at Kamaran Island station to 400 ng/g at Al-Hodiedah station, and the total organic carbon （TOC） in samples ranges from 0. 07% at Dhubab station to 0. 03% at Kamaran Island station. This pollution is as a result of localized oil pollution and/or heavy ship traffic in the Red Sea and Gulf of Aden. 相似文献