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1.
范典高 《中国海洋大学学报(自然科学版)》1986,(3)
含油气盆地的形成具有两个基本条件:一个是拗陷盆地的形成;另一个是盆地中沉积物内有机质演化生成石油和天然气,它们经过运移和储集,最后形成油气藏。因此,含油气盆地的形成是一个复杂过程,它受多种因素的控制。岩浆活动即是其重要因素之一。故今后对盆地的含油气远景评价时,必须进行岩浆活动(尤其是与含油气盆地发育 相似文献
2.
南亚地区含油气盆地类型及资源潜力分析 总被引：1，自引：1，他引：0
南亚地区经历冈瓦纳陆内裂谷、冈瓦纳裂解与板块漂移及印度板块与欧亚板块的陆-陆碰撞复杂的构造演化，最终形成了以被动大陆边缘盆地为主的，包括克拉通盆地和俯冲-碰撞带盆地在内的3类沉积盆地，其中被动大陆边缘盆地分布广泛，形成了南亚地区的一个主要盆地群。本文通过对南亚盆地生、储、盖等石油地质条件分析，研究不同盆地类型的油气成藏特征。根据盆地的剩余可采储量和远景资源量对南亚地区的资源潜力进行分析，认为被动大陆边缘盆地油气资源潜力最大，并优选出奎师那-哥达瓦里盆地、孟买盆地和科弗里盆地3个有利盆地。 相似文献
3.
试论岩浆活动在“含油气盆地”形成中的作用 总被引：1，自引：0，他引：1
范典高 《山东海洋学院学报》1986,16(3):65-73
含油气盆地的形成具有两个基本条件：一个是拗陷盆地的形成；另一个是盆地中沉积物内有机质演化生成石油和天然气，它们经过运移和储集，最后形成油气藏。因此，含油气盆地的形成是一个复杂过程，它受多种因素的控制。岩浆活动即是其重要因素之一。故今后对盆地的含油气远景评价时，必须进行岩浆活动(尤其是与含油气盆地发育时期相对应的岩浆活动)特征的研究，这对油气勘探工作具有重要的指导意义。 相似文献
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波斯湾盆地是世界上油气资源最丰富的地区。按不同估计,这里埋藏了全球可采石油储量的55%~68%和超过40%的天然气储量。盆地位于属于两个不同的岩石圈板块———非洲和欧亚板块的伊朗大陆地块与阿拉伯地盾的接触处。在中生代和新生代的交接期它们的碰撞导致形成了扎格罗斯造山褶皱带和在它前面的巨大美索不达米亚山凹陷,后者属波斯湾盆地的组成部分。在显生代和大部分时间内,这个盆地属于古老冈瓦纳被动边缘的组分,后者在古生代向古特提斯海开放,而在中生代则向新特提斯海开放。稳定的凹陷再加上极佳的地形—气候条件促使在该处形成了极厚的… 相似文献
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发现了与世界海洋被动边缘陆坡盆地有关的、新的具油气前景的目标。在与这些深水盆地有关的巨大烃类资源中,石油聚集起着重要作用。这些盆地具有相同的形成机制。它们在大陆裂谷系统的组分中开始了自、身的演化,并在超级大陆分裂和海底张开之后转变为被动边缘。盆地演化的差别表现为分裂和扩张的时间不同, 相似文献
7.
中国邻近海域含油气盆地地质构造特征 总被引：2，自引：1，他引：2
赖万忠 《海洋地质与第四纪地质》1988,(2)
本文从盆地形成时代、边界条件、盆地演化和热力学历史,将我国大陆附近海域中的十七个主要沉积盆地,划分为四种类型;克拉通边缘断陷盆地;大陆边缘断陷盆地;弧后盆地和小型洋壳盆地.通过对上述各类盆地的分析,认为这些含油气盆地具有六个地质特点:1.盆地绕陆分布,多数处于大陆架上.2.从地壳厚度、基底性质、盆地发展和构造单元上分析,海陆区域构造性质十分近似.3.盆地面积大小不一,海、陆相沉积均有,大部分盆地以新生代沉积为主.4.盆地处于现代构造活动带上,这对盆地发育、热力场条件形成、生油与构造配合和大量圈闭的产生,十分有利.5.具有不同时代的盆地纵向上迭置,和盆地不同发育阶段即几个断陷—拗陷上下迭置的复式盆地特点,使油气来源具多源性.6.由于沉积体积大,多种沉积相带交替出现,生油条件好,储层发育,圈闭多并成带分布,油气藏类型多等,认为中国邻近海域含油气盆地具有优越的石油地质条件,对寻找大、中型油气田十分有利. 相似文献
8.
珠江口和琼东南盆地天然气水合物形成和稳定分布的地球化学边界条件及其分布区 总被引：22，自引：0，他引：22
通过对南海北部陆缘珠江口和琼东南盆地气田的天然气形成水合物的地球化学计算模拟及地质地球化学条件分析，对珠江口和琼东南盆地天然气形成水合物的地球化学边界条件及分布区进行了研究。认识到南海北部陆缘琼东南和珠江口盆地内的断裂构造是天然气向海底渗漏的通道，为天然气水合物在海底的形成提供了物源；盆地内巨厚的第四纪富有机质沉积也为天然气水合物形成提供了充足的细菌成因生物气源。在海底温度2－16℃范围内，琼东南盆地气田10种天然气和珠江口盆地气田18种天然气形成水合物的压力有比较大的范围，随温度增高，天然气水合物形成的压力增高；盆地间和各天然气样品之间形成水合物的压力均是不一致的。在南海海水平均盐度3．4％条件下，结合海底温度与水深变化资料，珠江口和琼东南盆地天然气水合物形成和稳定分布的海区是不同的，珠江口盆地小于230m水深的海区没有天然气水合物的形成，在230－760m水深的海区可能有天然气水合物的存在，天然气水合物的稳定分布区应该在大于860m水深的深水区；在琼东南盆地水深小于320m的海区不可能有天然气水合物的形成，在320－650m水深的海区可能有天然气水合物的存在，大于650m水深的海区是天然气水合物的稳定分布区。 相似文献
9.
珠Ⅲ次盆地是南海北部陆架珠江口盆地三个次盆地中的一个,为形成于早第三纪的裂谷盆地,是珠江口盆地早第三纪断陷湖群的一部分。珠Ⅲ次盆地的演化可以分为三期：早期湖相（古新世－中渐新世）、中期海湾相（晚渐新世）和晚期开放浅海相（晚第三纪）。依次形成生油层、储集层和盖层。湖相沉积包括文昌组（油源岩）和恩平组（气源岩）,是研究区两个石油系统的源岩区。珠Ⅲ次盆地经历了三次显著的构造运动,其中晚渐新世的张性—剪切运动和中中新世末期的拉张运动导致研究区主要含油构造的形成。油气勘探、两种源岩地球化学和热模式综合分析… 相似文献
10.
尼罗河三角洲盆地已经进行了60余年的勘探实践,但是近年来随着勘探研究和钻探活动的继续深入,仍然不断有新的问题产生和新的勘探领域被发掘,显示出新的生命力和良好的勘探前景。尼罗河三角洲盆地虽然是一个世界级的富油气区,然而由于种种原因,中国油公司甚少涉及该盆地的研究,鲜见相关文献发表。通过对尼罗河三角洲盆地构造演化与沉积充填、烃源岩、储层等石油地质条件的研究,分析了尼罗河三角洲盆地的油气成藏特征与勘探潜力,并结合现今勘探现状指出了尼罗河三角洲盆地未来主要勘探领域与勘探方向:浅水区勘探程度较高,生产设施完善,经济门槛低,是实施滚动勘探的最佳区域;中深水—深水区渐新统是今后10年中—大型天然气田发现的主要潜力区;超深水区存在中新统和上新统大型生物气藏勘探潜力。 相似文献
11.
G. I. Gorchakov E. G. Semoutnikova B. A. Anoshin A. V. Karpov A. B. Kolesnikova 《Izvestiya Atmospheric and Oceanic Physics》2009,45(3):314-323
Statistical characteristics of variations in surface-layer concentrations of methane, non-methane and aromatic hydrocarbons, carbon dioxide, and formaldehyde are compared with the characteristics of variations in the concentration of carbon monoxide in the air basin of Moscow. Differences in the annual cycle of concentrations of methane, carbon dioxide, non-methane hydrocarbons, and carbon monoxide are determined. It is found that the maximum concentration of carbon monoxide at most sites with an elevated surface-air pollution level and over the city as a whole tends to occur in the summer season. The seasonal variability of the diurnal mean cycle of methane, carbon dioxide, and non-methane and aromatic hydrocarbons is analyzed. 相似文献
12.
G. I. Gorchakov E. G. Semutnikova E. V. Zotkin A. V. Karpov E. A. Lezina A. V. Ul’yanenko 《Izvestiya Atmospheric and Oceanic Physics》2006,42(2):156-170
Variations in the concentrations of gaseous pollutants in the air basin of Moscow are statistically analyzed. The basic statistical characteristics of variations in the concentrations of carbon monoxide, nitric oxide, nitrogen dioxide, ozone, formaldehyde, and a number of aromatic compounds are calculated. The main properties of intradiurnal, synoptic, seasonal, and interannual variations in the concentrations of gaseous pollutants are described. The power spectral densities of variations in the concentrations of carbon monoxide and nitrogen oxides are analyzed. The contributions made by variations in the concentration of carbon monoxide on different time scales to the total variance are calculated. The effect of the atmospheric air polluted with carbon monoxide and nitrogen oxides on the ecological situation in the city is estimated. The probabilities of an excess over the single maximum allowable concentrations are determined for carbon monoxide and nitrogen oxides. The absorption of shortwave solar radiation by nitrogen dioxide in the atmospheric boundary layer is estimated. 相似文献
13.
以松辽盆地地质资料为基础，介绍了应力场和张裂缝预测的计算方法。通过了各种岩性的张破裂概率隶属函数，预测松辽盆地酉部张裂缝区的分布。据此，为今后的油气勘探提出了几点认识和建议。 相似文献
14.
高分辨率层序地层学在东海古新近系油气地质条件预测中的应用 总被引：1，自引：0，他引：1
东海陆架盆地是我国重要的新生代海上含油气盆地,其中充填了巨厚的古新近系含油岩系。尽管该盆地的油气勘探已取得重要成果,但烃源岩分布等油气地质问题是制约该盆地油气勘探的主要障碍。基于此,作者运用高分辨层序地层学的理论和方法,对该盆地古新近系的油气地质条件进行了预测,分析了有利储层形成的基准面旋回位置,指出了潜在烃源岩的有利分布层位和区域,提出了不同区域油气勘探的有利层位。 相似文献
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In the Chelif basin, the geochemical characterization reveals that the Upper Cretaceous and Messinian shales have a high generation potential. The former exhibits fair to good TOC values ranging from 0.5 to 1.2% with a max. of 7%. The Messinian series show TOC values comprised between 0.5 and 2.3% and a high hydrogen index (HI) with values up to 566 mg HC/g TOC. Based on petroleum geochemistry (CPLC and CPGC) technics, the oil-to source correlation shows that the oil of the Tliouanet field display the same signature as extracts from the Upper Cretaceous source rocks (Cenomanian to Campanian). In contrast, oil from the Ain Zeft field contains oleanane, and could thus have been sourced by the Messinian black shale or older Cenozoic series. Two petroleum systems are distinguished: Cretaceous (source rock) – middle to upper Miocene (reservoirs) and Messinian (source rock)/Messinian (reservoirs). Overall, the distribution of Cretaceous-sourced oil in the south, directly connected with the surface trace of the main border fault of the Neogene pull-apart basin, rather suggests a dismigration from deeper reservoirs located in the parautochthonous subthrust units or in the underthrust foreland, rather than from the Tellian allochthon itself (the latter being mainly made up of tectonic mélange at the base, reworking blocks and slivers of Upper Cretaceous black shale and Lower Miocene clastics). Conversely, the occurrence of Cenozoic-sourced oils in the north suggests that the Neogene depocenters of the Chelif thrust-top pull-apart basin reached locally the oil window, and therefore account for a local oil kitchen zone. In spite of their limited extension, allochthonous Upper cretaceous Tellian formations still conceal potential source rock layers, particularly around the Dahra Mountains and the Tliouanet field. Additionally they are also recognized by the W11 well in the western part of the basin (Tahamda). The results of the thermal modelling of the same well shows that there is generation and migration of oil from this source rock level even at recent times (since 8 Ma), coevally with the Plio-Quaternary traps formation. Therefore, there is a possibility of an in-situ oil migration and accumulation, even from Tellian Cretaceous units, to the recent structures, like in the Sedra structure. However, the oil remigration from deep early accumulations into the Miocene reservoirs is the most favourable case in terms of hydrocarbon potential of the Chelif basin. 相似文献
17.
南黄海盆地含油气系统与油气勘探方向 总被引：2，自引：0，他引：2
南黄海盆地是目前中国近海惟一未获得工业性油气流的含油气盆地,其找油前景引起了人们的极大关注。根据前人的认识和研究成果,以含油气系统理论为指导,综合考虑含油气系统中烃源岩的演化阶段和凹陷分类原则,南黄海盆地在平面上可划分为6个含油气系统,每一个含油气系统都发育各具特色的生储盖组合特征及圈闭和运移条件。其中北部坳陷北凹中生界含油气系统和南部坳陷南四凹古近系含气系统为两个已知的含油气系统,北凹以寻找泰州组含油气系统的原生油气藏为主,南四凹以寻找阜宁组含油气系统的次生油气藏为主。 相似文献
18.
The results of identification of facies and microfacies of highstand systems tract (HST) deposits in the Zechstein Main Dolomite (Ca2) are presented followed by a critical analysis of the existing views on the paleogeography and facies architecture of the Wielkopolska Platform (eastern part of the Fore-Sudetic Monocline, SW Poland). The authors discuss and question, the existence in zones that have been treated as basinal flat in the analysed area, and an extensive platform margin ooidal barrier. In general, the facies architecture of the study area resembles the block built of the Paleozoic basement.On this background analytical geochemical results are presented and their source nature characterized in the context of a new revised model of the Ca2 basin paleogeography. A new facies classification of carbonates, which has not been applied for the Polish part of the Ca2 basin yet, was presented. The geochemical characteristic of Ca2 rocks indicates that good oil-prone source rocks are present only locally and are connected with calcisiltites and dolomudstones of facies II and dolobindstones of facies IV. These facies are mainly present in the slope and toe-of-slope zones. The microbial-algal facies, abundant in the carbonate platform, have a weaker residual potential. However, the thermal maturity stays within the entire range of the “oil window”, the rocks should be re-labeled as good source rocks. The presence of oil-prone kerogen Type II, and locally even Type I, makes the Ca2 beds in this part of the Wielkopolska Platform a very efficient source rock, the character of which is confirmed by numerous hydrocarbon accumulations, related to the course of tectonic zones and morphology of the basement. The proposed characteristic of source rocks in the new paleogeographic-facies system, enables their better petroleum evaluation and shall enable future prospecting of the perspective zones. 相似文献
19.
The Late Miocene Zeit Formation is exposed in the Red Sea Basin of Sudan and represents an important oil-source rock. In this study, five (5) exploratory wells along Red Sea Basin of Sudan are used to model the petroleum generation and expulsion history of the Zeit Formation. Burial/thermal models illustrate that the Red Sea is an extensional rift basin and initially developed during the Late Eocene to Oligocene. Heat flow models show that the present-day heat flow values in the area are between 60 and 109 mW/m2. The variation in values of the heat flow can be linked to the raise in the geothermal gradient from margins of the basin towards offshore basin. The offshore basin is an axial area with thick burial depth, which is the principal heat flow source.The paleo-heat flow values of the basin are approximately from 95 to 260 mW/m2, increased from Oligocene to Early Pliocene and then decreased exponentially prior to Late Pliocene. This high paleo-heat flow had a considerable effect on the source rock maturation and cooking of the organic matter. The maturity history models indicate that the Zeit Formation source rock passed the late oil-window and converted the oil generated to gas during the Late Miocene.The basin models also indicate that the petroleum was expelled from the Zeit source rock during the Late Miocene (>7 Ma) and it continues to present-day, with transformation ratio of more than 50%. Therefore, the Zeit Formation acts as an effective source rock where significant amounts of petroleum are expected to be generated in the Red Sea Basin. 相似文献
20.
I. N. Kuznetsova 《Izvestiya Atmospheric and Oceanic Physics》2012,48(5):504-515
Relations between short-term variations in the concentrations of aerosol (PM10) and carbon monoxide (CO) and meteorological characteristics are considered for the episodes of severe atmospheric pollution in the region of Moscow in the summer of 2010. The assumption is made and substantiated that the observed (in late June) severe aerosol pollution of the atmosphere over Moscow was caused by air masses arrived from soil-drought regions of southern Russia. In August, during the episodes of advection of forest-fire products, the maximum surface concentrations of pollutants were observed in Moscow mainly at 11:00–12:00 under a convective burst into the atmospheric boundary layer and at night in the presence of local wind-velocity maxima or low-level jet streams within the inversion layer. On the basis of results from an analysis of these air-pollution episodes before and after fires, it is concluded that the shearing instability of wind velocity favors the surface-air purification under ordinary conditions and an increase in the surface concentrations of pollutants during their advection (long-range transport, natural-fire plumes, etc.). It is shown that the pollution of the air basin over the megapolis with biomass-combustion products in 2010 led to an increase in the thermal stability of the atmospheric surface layer and in the duration of radiation inversions, as well as to an attenuation of the processes of purification in the urban heat island. 相似文献