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gas geochemical characteristics
相关语句
  天然气地球化学特征
     Gas geochemical characteristics and genesis approach in east buried hill of Qianmiqiao
     千米桥东潜山天然气地球化学特征及成因探索
短句来源
     Through geochemical analysis, with consideration of geological conditions, this paper analyzes gas geochemical characteristics of east buried hill of Qianmiqiao, and probes gas reservoir genesis.
     通过地化分析 ,结合地质条件等 ,对千米桥东潜山天然气地球化学特征进行了剖析 ,并对其气藏的形成进行了探索。
短句来源
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     新疆准噶尔盆地YJ油田土壤油气地球化学特征及来源探讨
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  相似匹配句对
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Through geochemical analysis, with consideration of geological conditions, this paper analyzes gas geochemical characteristics of east buried hill of Qianmiqiao, and probes gas reservoir genesis. The result is that natural gas in east buried hill of Qianmiqiao is a compound of inorganic CO\-2, humic prone organic gas, and sapropelic organic gas, with deep humic prone gas in coastal belt of east Qikou depression as its source; hydrocarbon gases accumulated in Minghuazhen...

Through geochemical analysis, with consideration of geological conditions, this paper analyzes gas geochemical characteristics of east buried hill of Qianmiqiao, and probes gas reservoir genesis. The result is that natural gas in east buried hill of Qianmiqiao is a compound of inorganic CO\-2, humic prone organic gas, and sapropelic organic gas, with deep humic prone gas in coastal belt of east Qikou depression as its source; hydrocarbon gases accumulated in Minghuazhen sedimentary period of Pleistocene, while inorganic CO\-2 accumulated earlier than hydrocarbon gases; this gas reservoir has high CO\-2 content, which is different from Qianmiqiao condensate gas reservoir.

通过地化分析 ,结合地质条件等 ,对千米桥东潜山天然气地球化学特征进行了剖析 ,并对其气藏的形成进行了探索。结果认为 :千米桥东潜山天然气为无机二氧化碳、偏腐殖型有机气、腐泥型有机气的复合气 ,主源为东部歧口凹陷沿岸带深层 (偏 )腐殖型气 ;烃类气体聚集时间晚 ,为更新世明化镇沉积时期 ,而无机二氧化碳聚集时间早于烃类气体 ;与千米桥凝析气藏不同的是该气藏CO2 含量高

Yingshan- Miaotaizi area developed mainly two sets of gas source rocks in North Songliao Basin. Humic organic matter is mainly in deep gas source rock of Shahezi Formation, has reached the over- matured stage. Sapropel organic matter is mainly in middle- shallow gas source rock of Qingshankou Formation, at present has reached the immature to low- matured stage. Fuyang oil layer in this area have found gas fields of Sanzhan,Sizhan,Wuzhan etc;deep layer can only see natural gas shows. Based on study of gas...

Yingshan- Miaotaizi area developed mainly two sets of gas source rocks in North Songliao Basin. Humic organic matter is mainly in deep gas source rock of Shahezi Formation, has reached the over- matured stage. Sapropel organic matter is mainly in middle- shallow gas source rock of Qingshankou Formation, at present has reached the immature to low- matured stage. Fuyang oil layer in this area have found gas fields of Sanzhan,Sizhan,Wuzhan etc;deep layer can only see natural gas shows. Based on study of gas geochemical characteristics,deep natural gas in this area is mainly coal- type gas; Fuyang oil layer natural gas is mainly mixed gas of coal- type and oil- type,at the same time there exist biogas and associated gas;Shaertu and Putaohua oil layer natural gas is mainly biogas.This paper calculates mixed gas ratio of Fuyang oil layer by carbon isotope value of methane.The result shows 39~81 percentage of the gas is from the coal- type gas of deep layer.The result is helpful for exploration of natural gas in the next stage.

松辽盆地北部莺山—庙台子地区主要发育两套气源岩,深层气源岩沙河子组以腐殖型有机质为主,已达过成熟阶段,中浅层气源岩青山口组以腐泥型有机质为主,目前为未熟—低熟阶段。该地区在中浅层扶、杨油层发现了三站、四站和五站等气田,深层见天然气显示。天然气地球化学特征研究表明,该地区深层天然气以煤型气为主;扶、杨油层天然气以煤型气和油型气的混合气为主,同时混有原油伴生气和生物成因气;萨尔图和葡萄花油层天然气以生物气为主。此外,还根据甲烷碳同位素值计算出扶、杨油层天然气混合比例,表明扶、杨油层混合气中有39%~81%是来自深层的煤型气。研究结果将对该区进一步的天然气勘探有所帮助。

The authors doubt about the opinions that there exist mantle origin abiogenic gases in Upper Paleozoic in E’erduosi Basin and the tectonic characteristics of the basin are favourable to the upward migration of mantle source gases. E’erduosi Basin is a structurally stable basin and most of the faults (mainly belonging in compressional type) concentrate around its periphery, so that it is unfavourable for the upward migration of mantle source gases; Through the analysis of gas geochemical characteristics,...

The authors doubt about the opinions that there exist mantle origin abiogenic gases in Upper Paleozoic in E’erduosi Basin and the tectonic characteristics of the basin are favourable to the upward migration of mantle source gases. E’erduosi Basin is a structurally stable basin and most of the faults (mainly belonging in compressional type) concentrate around its periphery, so that it is unfavourable for the upward migration of mantle source gases; Through the analysis of gas geochemical characteristics, it is pointed out in the paper that the Upper Paleozoic natural gas is mainly composed of coal-formaed gas by taking the Carboniferous—Permian coal measures as its source rocks; most of the δ~(13)C_1 ratios show its organic origin, the ratios being less than -30‰; partial samples’ δ~(13)C_1 ratios of more than -30‰ result from the heavier methane in high-matured or over-matured coal-formed gas; although the single carbon isotope sequence reversal occurred in alkane gases, which resulted from the mixture of the coal-formed gases originated from different source rocks or from the same source rock with different muturities. the alkane gases were organic origin also; Some CO_2 reservoirs’ δ~(13)C_(CO_2) ratios show their abiogenic origin, these ratios being ≥-8‰, which was caused by the hydrolysis and acid-solution of carbonate rocks; and the helium in the basin is also earth crust origin according to its analysis results.

对鄂尔多斯盆地上古生界存在幔源成因无机气以及盆地的构造特征有利于幔源气上涌的观点进行置疑。鄂尔多斯盆地构造稳定,断裂主要集中在周缘,而且以挤压性质为主,并不利于幔源气的上涌;通过对天然气地球化学特征的分析,上古生界的天然气主要是上古生界石炭—二叠系煤系为烃源岩的煤成气组成:大部分甲烷的δ13C1<-30‰,显示有机成因,而部分δ13C1>-30‰是由于高成熟或者过成熟煤成气甲烷较重的结果;烷烃气虽发生单项碳同位素倒转,属于煤系不同源气或同源不同期煤成气的混合结果,烷烃气均为有机成因;部分二氧化碳气藏具有δ13CCO2 ≥-8‰,为无机成因,是碳酸盐岩水解或者酸溶作用的结果;对盆地中氦的分析结果表明主要为壳源成因。

 
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