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major source rocks
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  主要烃源岩
     Organic facies of major source rocks in Baiju sag of Subei basin are classified using theory and analysis method on organic facies.
     应用有机相理论和分析方法,划分苏北盆地白驹凹陷主要烃源岩的有机相;
短句来源
     The major source rocks (Chijinpu Formation and lower part of Xiagou Formation, Lower Cretaceous) reached a peak of petroleum generation during the late Neogene Quaternary, that were controlled by tectonic and buried history in the Qingxi depression, and that are still in a maturity high maturity stage now, during which oil is mainly generated and oil pools are mainly formed.
     青西坳陷的构造埋藏史控制了主要烃源岩(下白垩统赤金堡组和下沟组下部 )在晚第三纪晚期—第四纪才达到生油高峰期 ,目前仍处于成熟—高成熟阶段 ,因此以生油为主 ,主要形成油藏。
短句来源
     The Triassic and Jurassic source rocks (including the Carboniferous Permian source rocks in some regions) are major source rocks in the foreland basins of central western China, whose formations are controlled by depressions or faulted sags developed in the early stage of the foreland basins and warm humid climate.
     受中生代前陆盆地早期阶段坳陷或断陷发育及温暖潮湿气候控制 ,主要烃源岩是三叠系—侏罗系 (部分包括石炭 二叠系 )烃源岩。
短句来源
     In the central uplift belt,Upper Triassic-Middle Jurassic Fuzhou Formation provides major source rocks.
     中央隆起带以上三叠统—中侏罗统福州组为主要烃源岩;
短句来源
     Study shows that Kumux basin is of bright explo ration prospecting for its two sets of major source rocks,good reservoir-seal assemblage and multi-trap types.
     库米什盆地具有良好的勘探前景:发育两套主要烃源岩、具良好的储盖组合和多种圈闭类型。
短句来源
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  主力生油岩
     In the paper,on the basis of a lot of field geological surveying data and outcrop geochemical samples and basin simulation achievements,three petroleum systems are preliminarily divided for the Mesozoic marine strata in Qiangtang Basin according to the contrast of oil and gas shows with oil sources,the distribution of three major source rocks in Mesozoic,the anticline belt growth characteristics and the hydrocarbon migration direction,etc.
     文章依据该盆地大量野外油气地质调查的实测资料和露头样品的地球化学与盆地模拟研究成果 ,根据盆地内油气显示与油源对比、中生代三套主力生油岩分布和背斜带发育特征及油气运移指向等 ,初步在羌塘盆地中生代海相沉积地层中划分出了三个含油气系统。
短句来源
  “major source rocks”译为未确定词的双语例句
     There are six major source rocks (T_3, P_2~1,P_1~(1+2),S_1,∈_1 and Z_2)and five petroleum systems (Z_2-∈_1,∈_1-S,S-P_1,P-T_2 and T_3-J)in this basin, among which commercial gas reserves are offered except the ∈_1-S system.
     该盆地有T_3,P_2~1,P_1~(1+2),S_1,∈_1和 Z_2六套主力烃源岩和 Z_2—∈_1,∈_1—S,S—P_1,p—T_2,T_3—J 五套成油气体系。
短句来源
     Volcanic Activity in Major Source Rocks in Faulted Basins of China and Its Significance
     中国断陷盆地主要生油岩中的火山活动及其意义
短句来源
     The threshold depth for oil generation(Ro=0.6%) of the major source rocks is about 5000 meter underground and the peak of oil generation and drainage was in Himalayan,which matched the trap-forming period of the sag.
     主力烃源岩生烃门限深度(Ro=0.6%)约在5 000 m左右,生烃高峰和排烃高峰期在喜马拉雅期,与凹陷内圈闭的形成期相匹配.
短句来源
     Source rocks are developed in Hetaoyuan Formation of Biyang depression,where organic matter abundance is high,the potential of hydrocarbon genesis is high,most of the major source rocks are mature and rich hydrocarbon resources are formed.
     南襄盆地泌阳凹陷核桃园组烃源岩发育,有机质丰度高,成烃潜力大,主力烃源岩大部分已经成熟,形成了丰富的油气资源;
短句来源
     According to the relative amounts of DBTS and DDI vs DMI values of Tarim oils, the major source rocks in Tarim Basin are identified as the dark and black laminated micrite and marlite deposited in the Ordovician continental shelf zone.
     根据DBTs的相对含量和DDI及DMI指标判识,表明塔里木盆地下古生界原油主要来自碳酸盐岩,奥陶系广海陆棚台地相喑色泥晶灰岩是主力油源岩。 这一认识将有助于确认主力油源区的分布,具有较大的勘探意义。
短句来源
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Hydrocarbon basins in Hexi corridor underwent a complex multicycle structural evolution process. Caledonian movement made the north Qilian geosyncline become a folded zone diving to Alashan paleoland so that the geosyncline Vanished, resulting in a foundation for the apprearance of basin. During Yanshan movement, after an erosion to form a fairly flat ground, the Qilian fold system subjected mainly an tensional and tilting tectonic movement, whose tensional and tilting directions were controlled by the relative...

Hydrocarbon basins in Hexi corridor underwent a complex multicycle structural evolution process. Caledonian movement made the north Qilian geosyncline become a folded zone diving to Alashan paleoland so that the geosyncline Vanished, resulting in a foundation for the apprearance of basin. During Yanshan movement, after an erosion to form a fairly flat ground, the Qilian fold system subjected mainly an tensional and tilting tectonic movement, whose tensional and tilting directions were controlled by the relative uplifting of paleohighs at the basin margin. Major source rocks in the basins were formed in this period. Owing to the strong Himalayan movement, Hexi Corridor basins were compressed and overthrusted by Qilian fold system so that tectonic patterns in Jiuxi, Jiudong and Minle basins were formed. Different types of folds and faults were generated, which give the conditions for hydrocarbon accumulation. It can be seen from these that the structures in Hexi corridor petroliferous basins are not of the simply compressional type, they are complex structures which were subjected tension in an early period and compression in later time.

河西走廊含油气盆地,具有复杂的多旋回构造演化史。加里东运动使北祁连地槽最终回返褶皱向阿拉善古陆俯冲,结束了地槽发展阶段,奠定了盆地的基础。燕山期祁连褶皱系在剥蚀夷平的基础上,以拉张翘倾运动为主,其拉张翘倾方向受盆地边缘古隆起相对上升所控制,沉积了盆地的主要生油岩系。喜山期的喜山运动强烈,使盆地明显受到祁连褶皱系挤压、仰冲,统一了酒西、酒东、民乐三盆地的构造格局,形成了不同类型的褶皱和断裂,为油气储存准备了场所。上述可见河西走廊含油气盆地具早期拉张、晚期挤压复合的构造类型,而非单一挤压含油气盆地的构造类型。

There are more than 140 minor Meso-Cenozoic remnant basins distributed along deep fault zones in south-east China. Some of these basins have abundent oil and gas reserves and high yielding traps, although the areal extent of this petroliferous basins is only 800~1,000 sq. km. The structural and lithologic characteristics of the hydrocarbon accumulations in these basins are briefly summarized as: 1. Distribution along deep fault zones. 2. Widely distributed thick source rocks. 3. Well developed sand bodies. 4....

There are more than 140 minor Meso-Cenozoic remnant basins distributed along deep fault zones in south-east China. Some of these basins have abundent oil and gas reserves and high yielding traps, although the areal extent of this petroliferous basins is only 800~1,000 sq. km. The structural and lithologic characteristics of the hydrocarbon accumulations in these basins are briefly summarized as: 1. Distribution along deep fault zones. 2. Widely distributed thick source rocks. 3. Well developed sand bodies. 4. Higher geothermal gradients and 5. Multiple trap styles. The Meso-Cenozoic remnant basins contain thick sequences of deepwater,lacustrine shales which are the major source rocks for the hydrocarbon accumulations. The organic-rich, dark, muddy sediments were deposited in the deeper parts of the lake basins. Therefore, the main source-rocks are wellpreserved and have a wide distribution, although the basins were uplifted and eroded subsequent to shale deposition, resulting in the destructions of the basin edges. Most of the minor remnant basins occur as single-faulted half-grabens as a result of successive development of the fault along one side of the basin. But double faulted grabens also developed in some basins. The well-d-eveloped minor remnant basins can be further divided into three structural units; 1. A step-faulted belt on the steeper flank. 2. A central, low buried-h-ill belt and 3. A monoclinal slope belt on the gentler flank. Examples of this type of basins are the Damintun basin, Langgu basin, Nanpu basin, Sulu basin, Beishe basin and Sansui basin. The poorly-developed remnant basins are composed of 1. A step-faulted belt on the steeper flank. 2. A central trough and 3. A monoclinal slope belt on the gentler flank. Examples of this type of basins are the Biyang basin, Changwei basin, Qianjiang basin, Yuanjiang basin and Momin Basin.

中国东、南部沿着一些深大断裂带分布有140多个中、新生代残留型小盆地。其中若干已证实富含油气。每个盆地面积仅800~1,000平方千米,但储量丰度高,并有多种类型的高产圈闭。这些盆地油气富集的构造和岩性特点如下:1.深大断裂带控制残留型盆地的形成与发育;2.生油岩堆积厚,分布范围广;3.四周物源多,砂体发育;4.地温梯度较高;5.油气圈闭类型多。残留型含油气盆地其原始湖盆沉积面积大于目前盆地范围。在生油岩沉积期,湖盆稳定下陷,有机质得到有利的保存和转化。后期盆地抬升剥蚀后,其边缘相已被削蚀掉,但保存了主要的生油岩体和储集岩体。第三系残留型小含油气盆地由于一侧为长期发育的生长断层,所以盆地结构一般为单断式的箕状断陷,但亦有双断式的地堑断陷。两类盆地都具有明显的分带性:发育较全的箕状凹陷具有1.断阶带;2.中央低潜山带;3.斜坡带。如大民屯凹陷、廊固凹陷、南堡凹陷、束鹿凹陷、百色盆地和三水盆地等都是这种类型。发育不太完整的箕状凹陷具有:1.断阶带;2.中央凹槽带,3.斜坡带。如泌阳凹陷、昌淮凹陷、潜江凹陷、沅江凹陷和茂名盆地等都是这种类型。

Practice of hydrocarbon exploration in recent years indicates that Tarim Basin hasfollowing geological conditions for formating huge oil-gas fields: 1. The dovelopment oflarge hydrocarbon-generating depressions, especially the Manjiaer Cambrian-Ordoviciandepression with a total area of 80000 km~2, source rocks of 2000m thick and total hydro-carbon resources of 6000 million ton. 2. Uplifts of long-period developmen between thelarge hydrocarbon-generating depressions, especially the Shayar and Central Uplifts,...

Practice of hydrocarbon exploration in recent years indicates that Tarim Basin hasfollowing geological conditions for formating huge oil-gas fields: 1. The dovelopment oflarge hydrocarbon-generating depressions, especially the Manjiaer Cambrian-Ordoviciandepression with a total area of 80000 km~2, source rocks of 2000m thick and total hydro-carbon resources of 6000 million ton. 2. Uplifts of long-period developmen between thelarge hydrocarbon-generating depressions, especially the Shayar and Central Uplifts, whichwere the direction of hydrocarbon migration, and were favourable for hydrocarbonaccumulation. 3. Low geothermal gradient, the mean geothermal gradient of Mesozoic andCenozoic was about 2℃/100m, and that of Paleozoic was 2.6--2.7℃/100m. This wasfairly favourable to hydrocarbon generation in late stage for major source rocks (Cam-brian to Ordovician) in the basin, and slowed down the diagenetic evolution of Silurianto Tertiary clastic rocks, Therefore, the development zone of secondary pores is not onlywide in longitudinal distribution (generally greater than 2000m), but also very deep (forexample, the porosity of the clastic rocks which is buried in the depth of 4300--5800m isstill up to 15--25%). 4. Good preservation conditions in the later stage due to weaktectonic movements in the Meso-Cenozoic, and the development of regional cap bedswhich are characterized by extensive distribution, large thickness and good sealing proper-ty. 5. Well developed faults and unconformity surfaces as the main passage ways for hy-drocarbon migration and accumulation, and which obviously improved reservoir propertyof Lower Paleozoic carbonate rocks, especially the unconformity surfaces of the Pre-Mesozoic that usually formed weathering surface reservoirs.

塔里木盆地形成大型—巨型油气田的基本地质条件是:大型生油坳陷的存在,大型生油坳陷之间有长期发育的巨型隆起带,低地温梯度,后期良好的保存条件,以及作为油气主要运移、聚集通道之区域性不整合面及断裂的发育。

 
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