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四川盆地元坝气田长兴组—飞仙关组天然气地球化学特征及成因类型 - Geochemical Characteristics and Genetic Types of Natural Gas in the Changxing-Feixianguan Formations from Yuanba Gasfield in the Sichuan Basin

元坝气田是迄今为止我国埋藏最深的大型海相气田,有关其海相层系礁滩相储层特征与成藏主控因素的研究取得了重要进展,但对其及邻区长兴组—飞仙关组天然气成因的认识仍存在分歧。地球化学特征研究表明,元坝气田长兴组—飞仙关组天然气以烃类气体为主,其中甲烷占主导,干燥系数均高于0.995,非烃气体CO2和H_2S平均含量分别高达8.55%和6.47%;δ~(13)C_1值和δ~(13)C_2值分别介于-31.2‰~-27.9‰和-29.9‰~-25.0‰之间,且普遍具有正序特征;δ~(13)C_(CO_2)值普遍高于-8‰,δD_1值介于-156‰~-107‰之间。元坝气田长兴组—飞仙关组天然气普遍经历了硫... Full description

Journal Title: 天然气地球科学 - Natural Gas Geoscience 2015, Vol.26(11), pp.2155-2165
Main Author: 吴小奇
Other Authors: 刘光祥 , 刘全有 , 刘景东 , 袁晓宇 , WU Xiao-qi, LIU Guang-xiang, LIU Quan-you, LIU Jing-dong, YUAN Xiao-yu
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title: 四川盆地元坝气田长兴组—飞仙关组天然气地球化学特征及成因类型 - Geochemical Characteristics and Genetic Types of Natural Gas in the Changxing-Feixianguan Formations from Yuanba Gasfield in the Sichuan Basin
format: Article
creator:
  • 吴小奇
  • 刘光祥
  • 刘全有
  • 刘景东
  • 袁晓宇
  • WU Xiao-qi
  • LIU Guang-xiang
  • LIU Quan-you
  • LIU Jing-dong
  • YUAN Xiao-yu
subjects:
  • 元坝气田
  • 长兴组—飞仙关组
  • 天然气
  • 地球化学特征
  • 成因
  • Yuanba Gasfield
  • Changxing-Feixianguan Formations
  • Natural Gas
  • Geochemical Characteristics
  • Origin
ispartof: 天然气地球科学 - Natural Gas Geoscience, 2015, Vol.26(11), pp.2155-2165
description: 元坝气田是迄今为止我国埋藏最深的大型海相气田,有关其海相层系礁滩相储层特征与成藏主控因素的研究取得了重要进展,但对其及邻区长兴组—飞仙关组天然气成因的认识仍存在分歧。地球化学特征研究表明,元坝气田长兴组—飞仙关组天然气以烃类气体为主,其中甲烷占主导,干燥系数均高于0.995,非烃气体CO2和H_2S平均含量分别高达8.55%和6.47%;δ~(13)C_1值和δ~(13)C_2值分别介于-31.2‰~-27.9‰和-29.9‰~-25.0‰之间,且普遍具有正序特征;δ~(13)C_(CO_2)值普遍高于-8‰,δD_1值介于-156‰~-107‰之间。元坝气田长兴组—飞仙关组天然气普遍经历了硫酸盐热化学还原作用的改造,其主体为原油裂解气,主要为龙潭组烃源岩生成的原油后期发生裂解所形成。气藏中的CO_2主体为无机成因,来自酸性流体与碳酸盐岩储层的相互作用。
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source: 维普数据 (Chongqing VIP Information Co.)
identifier: ISSN: 1672-1926
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title四川盆地元坝气田长兴组—飞仙关组天然气地球化学特征及成因类型 - Geochemical Characteristics and Genetic Types of Natural Gas in the Changxing-Feixianguan Formations from Yuanba Gasfield in the Sichuan Basin
creator吴小奇 ; 刘光祥 ; 刘全有 ; 刘景东 ; 袁晓宇 ; WU Xiao-qi;LIU Guang-xiang;LIU Quan-you;LIU Jing-dong;YUAN Xiao-yu
ispartof天然气地球科学 - Natural Gas Geoscience, 2015, Vol.26(11), pp.2155-2165
identifierISSN: 1672-1926
subject元坝气田 ; 长兴组—飞仙关组 ; 天然气 ; 地球化学特征 ; 成因 ; Yuanba Gasfield; Changxing-Feixianguan Formations; Natural Gas; Geochemical Characteristics; Origin
description
0元坝气田是迄今为止我国埋藏最深的大型海相气田,有关其海相层系礁滩相储层特征与成藏主控因素的研究取得了重要进展,但对其及邻区长兴组—飞仙关组天然气成因的认识仍存在分歧。地球化学特征研究表明,元坝气田长兴组—飞仙关组天然气以烃类气体为主,其中甲烷占主导,干燥系数均高于0.995,非烃气体CO2和H_2S平均含量分别高达8.55%和6.47%;δ~(13)C_1值和δ~(13)C_2值分别介于-31.2‰~-27.9‰和-29.9‰~-25.0‰之间,且普遍具有正序特征;δ~(13)C_(CO_2)值普遍高于-8‰,δD_1值介于-156‰~-107‰之间。元坝气田长兴组—飞仙关组天然气普遍经历了硫酸盐热化学还原作用的改造,其主体为原油裂解气,主要为龙潭组烃源岩生成的原油后期发生裂解所形成。气藏中的CO_2主体为无机成因,来自酸性流体与碳酸盐岩储层的相互作用。
1Yuanba Gasfield is a large gas held in the marine strata with the largest burial depth in China till now,and the studies on the characteristics of reef flat reservoirs in the marine strata and the main controlling factors of hydrocarbon accumulation have achieved significant progresses.However,there is no consensus on the origin of natural gases reservoired in the Changxing-Feixianguan Formations in Yuanba and adjacent area.The study on geochemical characteristics indicates that,the natural gases reservoired in the Changxing-Feixianguan Formations in the Yuanba Gasfield are mainly composed of alkane gases which are dominated by methane with dryness coefficients generally higher than 0.995,and the CO2 and H_2S display an average content of 8.55%and 6.47%,respectively.The δ~(13)C_1 and δ~(13)C_2 values are in the range of-31.2‰--27.9‰ and-29.9‰--25.0‰,respectively,displaying the positive carbon isotopic series.Theδ~(13)C_(CO_2) values are generally higher than-8‰,and the δD_1 values are in the range of-156‰--107‰.The identification of gas origin and gas-source correlation indicate that,the natural gases reservoired in the Changxing-Feixianguan Formations in the Yuanba Gasfield have been altered by thermalchemical sulfate reduction,and they are mainly composed of oil cracked gases derived from the secondary cracking of oil generated by the sapropelic-prone source rocks in the Permian Longtan Formation.The CO_2 in the gas pools are mainly inorganic and were derived from the interaction between acidic fluid and carbonate reservoirs.
relation作者单位: 中国石化石油勘探开发研究院无锡石油地质研究所,江苏无锡214126 中国石化石油勘探开发研究院,北京100083 中国石油大学地球科学与技术学院,山东青岛266580
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1刘光祥
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4袁晓宇
5WU Xiao-qi;LIU Guang-xiang;LIU Quan-you;LIU Jing-dong;YUAN Xiao-yu
6中国石化石油勘探开发研究院无锡石油地质研究所,江苏无锡214126 中国石化石油勘探开发研究院,北京100083 中国石油大学地球科学与技术学院,山东青岛266580
title
0四川盆地元坝气田长兴组—飞仙关组天然气地球化学特征及成因类型
1Geochemical Characteristics and Genetic Types of Natural Gas in the Changxing-Feixianguan Formations from Yuanba Gasfield in the Sichuan Basin
description
0元坝气田是迄今为止我国埋藏最深的大型海相气田,有关其海相层系礁滩相储层特征与成藏主控因素的研究取得了重要进展,但对其及邻区长兴组—飞仙关组天然气成因的认识仍存在分歧。地球化学特征研究表明,元坝气田长兴组—飞仙关组天然气以烃类气体为主,其中甲烷占主导,干燥系数均高于0.995,非烃气体CO2和H_2S平均含量分别高达8.55%和6.47%;δ~(13)C_1值和δ~(13)C_2值分别介于-31.2‰~-27.9‰和-29.9‰~-25.0‰之间,且普遍具有正序特征;δ~(13)C_(CO_2)值普遍高于-8‰,δD_1值介于-156‰~-107‰之间。元坝气田长兴组—飞仙关组天然气普遍经历了硫酸盐热化学还原作用的改造,其主体为原油裂解气,主要为龙潭组烃源岩生成的原油后期发生裂解所形成。气藏中的CO_2主体为无机成因,来自酸性流体与碳酸盐岩储层的相互作用。
1Yuanba Gasfield is a large gas held in the marine strata with the largest burial depth in China till now,and the studies on the characteristics of reef flat reservoirs in the marine strata and the main controlling factors of hydrocarbon accumulation have achieved significant progresses.However,there is no consensus on the origin of natural gases reservoired in the Changxing-Feixianguan Formations in Yuanba and adjacent area.The study on geochemical characteristics indicates that,the natural gases reservoired in the Changxing-Feixianguan Formations in the Yuanba Gasfield are mainly composed of alkane gases which are dominated by methane with dryness coefficients generally higher than 0.995,and the CO2 and H_2S display an average content of 8.55%and 6.47%,respectively.The δ~(13)C_1 and δ~(13)C_2 values are in the range of-31.2‰--27.9‰ and-29.9‰--25.0‰,respectively,displaying the positive carbon isotopic series.Theδ~(13)C_(CO_2) values are generally higher than-8‰,and the δD_1 values are in the range of-156‰--107‰.The identification of gas origin and gas-source correlation indicate that,the natural gases reservoired in the Changxing-Feixianguan Formations in the Yuanba Gasfield have been altered by thermalchemical sulfate reduction,and they are mainly composed of oil cracked gases derived from the secondary cracking of oil generated by the sapropelic-prone source rocks in the Permian Longtan Formation.The CO_2 in the gas pools are mainly inorganic and were derived from the interaction between acidic fluid and carbonate reservoirs.
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0元坝气田
1长兴组—飞仙关组
2天然气
3地球化学特征
4成因
5Yuanba Gasfield
6Changxing-Feixianguan Formations
7Natural Gas
8Geochemical Characteristics
9Origin
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0中国石化石油勘探开发研究院无锡石油地质研究所,江苏无锡214126 中国石化石油勘探开发研究院,北京100083 中国石油大学地球科学与技术学院,山东青岛266580
1WU Xiao-qi;LIU Guang-xiang;LIU Quan-you;LIU Jing-dong;YUAN Xiao-yu(1. Wuxi Research Institute of Petroleum Geology ,Research Institute of Petroleum Exploration and Production, SINOPEC,Wuxi 214126, China ;2. Research Institute of Petroleum Exploration and Production, SINOPEC, fJeij ing 100083, China ; 3. School of Geosciences , China University of Petroleum, Qingdao 266580, China)
citationpf 2155 pt 2165 vol 26 issue 11
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title四川盆地元坝气田长兴组—飞仙关组天然气地球化学特征及成因类型 - Geochemical Characteristics and Genetic Types of Natural Gas in the Changxing-Feixianguan Formations from Yuanba Gasfield in the Sichuan Basin
author吴小奇 ; 刘光祥 ; 刘全有 ; 刘景东 ; 袁晓宇 ; WU Xiao-qi;LIU Guang-xiang;LIU Quan-you;LIU Jing-dong;YUAN Xiao-yu
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5Yuanba Gasfield; Changxing-Feixianguan Formations; Natural Gas; Geochemical Characteristics; Origin
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atitle四川盆地元坝气田长兴组—飞仙关组天然气地球化学特征及成因类型 - Geochemical Characteristics and Genetic Types of Natural Gas in the Changxing-Feixianguan Formations from Yuanba Gasfield in the Sichuan Basin
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0元坝气田是迄今为止我国埋藏最深的大型海相气田,有关其海相层系礁滩相储层特征与成藏主控因素的研究取得了重要进展,但对其及邻区长兴组—飞仙关组天然气成因的认识仍存在分歧。地球化学特征研究表明,元坝气田长兴组—飞仙关组天然气以烃类气体为主,其中甲烷占主导,干燥系数均高于0.995,非烃气体CO2和H_2S平均含量分别高达8.55%和6.47%;δ~(13)C_1值和δ~(13)C_2值分别介于-31.2‰~-27.9‰和-29.9‰~-25.0‰之间,且普遍具有正序特征;δ~(13)C_(CO_2)值普遍高于-8‰,δD_1值介于-156‰~-107‰之间。元坝气田长兴组—飞仙关组天然气普遍经历了硫酸盐热化学还原作用的改造,其主体为原油裂解气,主要为龙潭组烃源岩生成的原油后期发生裂解所形成。气藏中的CO_2主体为无机成因,来自酸性流体与碳酸盐岩储层的相互作用。
1Yuanba Gasfield is a large gas held in the marine strata with the largest burial depth in China till now,and the studies on the characteristics of reef flat reservoirs in the marine strata and the main controlling factors of hydrocarbon accumulation have achieved significant progresses.However,there is no consensus on the origin of natural gases reservoired in the Changxing-Feixianguan Formations in Yuanba and adjacent area.The study on geochemical characteristics indicates that,the natural gases reservoired in the Changxing-Feixianguan Formations in the Yuanba Gasfield are mainly composed of alkane gases which are dominated by methane with dryness coefficients generally higher than 0.995,and the CO2 and H_2S display an average content of 8.55%and 6.47%,respectively.The δ~(13)C_1 and δ~(13)C_2 values are in the range of-31.2‰--27.9‰ and-29.9‰--25.0‰,respectively,displaying the positive carbon isotopic series.Theδ~(13)C_(CO_2) values are generally higher than-8‰,and the δD_1 values are in the range of-156‰--107‰.The identification of gas origin and gas-source correlation indicate that,the natural gases reservoired in the Changxing-Feixianguan Formations in the Yuanba Gasfield have been altered by thermalchemical sulfate reduction,and they are mainly composed of oil cracked gases derived from the secondary cracking of oil generated by the sapropelic-prone source rocks in the Permian Longtan Formation.The CO_2 in the gas pools are mainly inorganic and were derived from the interaction between acidic fluid and carbonate reservoirs.
lad0197226X