四川盆地威远气田和资阳含气区震旦系油气成藏差异性研究
|
摘要
本文通过对四川盆地元古宇—下古生界勘探最成功的两个地区——威远震旦系气田和资阳震旦系含气区天然气成藏要素和成藏过程的详细比较,得出:①资阳含气区和威远气田的原始烃源相同,均是下寒武统生成的油裂解的天然气,不同的是资阳为残留的气顶气,威远是水溶气脱溶气。②资阳含气区和威远气田震旦系碳酸盐岩基质孔隙度相近,资阳地区溶蚀洞穴发育,但裂缝不发育,储层渗透性较差,非均质性强;威远地区储层洞穴不发育,但裂缝发育,形成统一的裂缝-孔洞系统。③威远地区具有统一的圈闭,闭合度高(800m),闭合面积大(895km2)。资阳含气区不具有统一的圈闭,多为局部的小高点。④喜马拉雅期隆升作用使资阳统一含气区分散化和气藏变小,形成多压力系统的含气区;威远地区快速大幅度隆升,溶于水中的天然气脱溶,形成具同一压力系统的整装气田。⑤资阳含气区的成藏过程为:(资阳—威远)古油藏→原油裂解→气顶天然气→隆升调整→现今(残留)含气区,其天然气藏是隆升调整成藏,是在原古气藏的基础上改造残留而成;威远地区的成藏过程则是:(资阳—威远)古油藏→原油裂解→天然气大量溶于水中→隆升使得带有大量天然气的水向威远运移和天然气脱溶→现今(新生)气藏,属天然气的脱溶成藏。资阳含气区受古构造的控制明显;威远气田则主要受今构造的制约。因此,在四川盆地震旦系和下古生界的油气勘探中,既要研究其古构造的特征和演化,也要研究今构造的特征和分布规律,才能发现不同类型的天然气藏。
Weiyuan Sinian gas field and Ziyang Sinian gas-borne area are the only two natural gas pools from the Sinian system to lower Palaeozoic Erathem in Sichuan basin,west China.Depending on the elements and process of Sinian natural gas pools in Weiyuan gas field and Ziyang gas-borne area,the present paper has concluded at the following results.(1) The source rocks of the Sinian natural gas pools in Weiyuan gas field and Ziyang gas-borne area are the same,and both were the lower Cambrian system.The natural gases from the two areas are oil thermal cracked gas,but the gases in Weiyuan were also from the gas dissolved in formation water.(2) The porosities of the Sinian reservoir rock matrix(dolostone) in the two areas are similar.The cavities formed by karstification were developed very much in Ziyang gas-borne area,but undeveloped in Weiyuan gas field;the fractures were developed very much in Weiyuan gas field,but undeveloped in Ziyang gas-borne area.(3) The trap in Weiyuan is an entire anticline with high closure height(800 m) and big closure area(895 km2),but are small high topographical points without entire closure height and area in Ziyang.(4) Himalayas movement has made the Ziyang palaeotrap isolated and the Ziyang palaeo natural gas pool become smaller,but made the Weiyuan area uplifted,dissolved gas escaped from water in Weiyuan,and formed an entire Weiyuan natural gas pool with the same pressure system.(5) The formation process of Ziyang Sinian gas-borne area is:(Ziyang—Weiyuan) palaeo-oil pool→oil thermal cracked→oil-cracked gas pool→gas pool modified by uplift→present gas borne area.The formation process of Weiyuan Sinian gas field is:(Ziyang—Weiyuan) palaeo-oil pool→oil thermal cracked→the gas largely dissolved in water→the water with dissolved gas migrated to Weiyuan area by uplift and escaped from water in Weiyuan→present gas field.The formation of Ziyang Sinian gas-borne area was mainly controlled by the palaeo-structures;however the formation of Weiyuan Sinian gas field was chiefly formed by the modern(Himalayas) structures.Therefore,both the palaeo-structures and the modern structures should be studied during the hydrocarbon study and exploration on the Sinian system to lower Palaeozoic Erathem in Sichuan basin.
Weiyuan Sinian gas field and Ziyang Sinian gas-borne area are the only two natural gas pools from the Sinian system to lower Palaeozoic Erathem in Sichuan basin,west China.Depending on the elements and process of Sinian natural gas pools in Weiyuan gas field and Ziyang gas-borne area,the present paper has concluded at the following results.(1) The source rocks of the Sinian natural gas pools in Weiyuan gas field and Ziyang gas-borne area are the same,and both were the lower Cambrian system.The natural gases from the two areas are oil thermal cracked gas,but the gases in Weiyuan were also from the gas dissolved in formation water.(2) The porosities of the Sinian reservoir rock matrix(dolostone) in the two areas are similar.The cavities formed by karstification were developed very much in Ziyang gas-borne area,but undeveloped in Weiyuan gas field;the fractures were developed very much in Weiyuan gas field,but undeveloped in Ziyang gas-borne area.(3) The trap in Weiyuan is an entire anticline with high closure height(800 m) and big closure area(895 km2),but are small high topographical points without entire closure height and area in Ziyang.(4) Himalayas movement has made the Ziyang palaeotrap isolated and the Ziyang palaeo natural gas pool become smaller,but made the Weiyuan area uplifted,dissolved gas escaped from water in Weiyuan,and formed an entire Weiyuan natural gas pool with the same pressure system.(5) The formation process of Ziyang Sinian gas-borne area is:(Ziyang—Weiyuan) palaeo-oil pool→oil thermal cracked→oil-cracked gas pool→gas pool modified by uplift→present gas borne area.The formation process of Weiyuan Sinian gas field is:(Ziyang—Weiyuan) palaeo-oil pool→oil thermal cracked→the gas largely dissolved in water→the water with dissolved gas migrated to Weiyuan area by uplift and escaped from water in Weiyuan→present gas field.The formation of Ziyang Sinian gas-borne area was mainly controlled by the palaeo-structures;however the formation of Weiyuan Sinian gas field was chiefly formed by the modern(Himalayas) structures.Therefore,both the palaeo-structures and the modern structures should be studied during the hydrocarbon study and exploration on the Sinian system to lower Palaeozoic Erathem in Sichuan basin.
引文
[1]罗启后,等.1990.乐山-龙女寺加里东古隆起震旦,寒武,奥陶系与上三叠统含气性评价报告.中国石油天然气总公司招标项目成果.
[2]史习杰,等.1995.四川资阳地区震旦系气藏成藏条件研究和气藏描述.四川石油管理局新区勘探研究成果报告.
[3]熊荣国,等.1998.四川盆地加里东古隆起构造发展及圈闭评价研究报告.四川石油管理局报告.
[4]梁兴,等,2000.四川盆地威远气田震旦系灯影组气藏调研报告.中石化南方公司.
戴金星.1992.各类天然气的成因鉴别.中国海上油气(地质).6(1):11～19.
付晓泰,卢双舫,王振平.1997.天然气的溶解特征及其意义.地球化学,26(3):60～66.
黄籍中,陈盛吉.1993.震旦系气藏形成的烃源地球化学条件分析.天然气地球科学,(4):16～20.
李一平.1996.四川盆地已知大中型气田成藏条件研究.天然气工业.16(增刊):1～12.
刘树根,马永生,黄文明,等.2007.四川盆地上震旦统灯影组储集层致密化过程研究.天然气地球化学,18(4):485～496.
罗志立,李景明,刘树根,等.2005.中国板块构造和含油气盆地分析.北京:石油工业出版社.
秦胜飞,赵靖舟,李梅水,等.2006.水溶天然气运移地球化学示踪——以塔里木盆地和田河气田为例.地学前缘,13(5):524～321.
邱蕴玉,徐濂,黄华梁.1994.威远气田成藏模式初探.天然气工业,14(1):9～13.
宋文海.1996.乐山-龙女寺古隆起大中型气田成藏条件研究.天然气工作,16(增刊):13～26.
宋岩,秦胜飞,赵孟军.2007.中国煤层气成藏的两大关键地质因素.天然气地球化学,18(4):545～553.
孙玮,刘树根,马永生,等.2007.四川盆地威远-资阳地区震旦系油裂解气判定及成藏过程定量模拟.地质学报,81(8):1153～1159.
唐俊红,张同伟,鲍征宇,等.2004.四川盆地威远气田碳酸盐岩中有机包裹体研究.地质论评,50(2):210～214.
汪泽成,赵文智,张林,等.2002.四川盆地构造层序与天然气勘探,北京:地质出版社.
王兴志,黄继祥,侯方浩,等.1996.四川资阳及邻区震旦系灯影组储层段沉积及层序地层学特征,西南石油学院学报.18(3):1～9.
王兴志,穆曙光,黄继祥,等.1998.四川资阳地区灯影组气藏储渗体圈闭类型.中国海上油气地质,12(6):386～389.
徐世琦,洪海涛,李翔.2002.四川盆地震旦系油气成藏特征与规律天然气勘探与开发,25(4):1～5.
徐世琦,张光荣.1999.四川盆地资阳地区震旦系气藏储层分布与控制因素.天然气勘探与开发,22(3):1～5.
尹长河,王廷栋,王顺玉,等.2001.威远、资阳震旦系干酪根与油裂解气的鉴别.沉积学报,19(1):156～160.
张若祥,王兴志,蓝大樵,等.2006.四川盆地资阳地区震旦系灯影组油气成藏条件分析.重应科技学院学报(自然科学版),8(1):14～17.
张子枢.1995.水溶气浅论.天然气地球科学,31(6):29～34.
Dai Jinxing.1992.Identify the genesis of various gases.ChinaOffshore Oil&Gas,6(1):11～19(in Chinese with Englishabstract).
Fu Xiaotai,Lu Shuangfang,Wang Zhenping.1997.Dissolvingcharacter for the components of natural gas andits significance.Geochi mica,26(3):60～66(in Chinese with English abstract).
Huang Jizhong,Chen Shengji.1993.Hydrocarbon origingeochemical conditions analysis of forming of Sinian gas pool.Nature Gas Geochemistry,(4):16～20(in Chinese).
Li Yiping.1996.Reservoir-formed condition research on theknownlarge-medium gas fieles in Sichuan basin.Nature GasIndustry,16:1～12(in Chinese with English abstract).
Liu Shugen,Ma Yongsheng,Huang Wenming,et al.2007.Densification process of upper Sinian Dengying Formation,Sichuan basin.Natural Gas Geoscience,18(4):485～496(inChinese with English abstract).
Luo Zhili,Li Jingming,Liu Shugen,et al.2005.Plate Tectonic andAnalysis of Petroliferous Basins in China.Beijing:PetroleumIndustry Press(in Chinese).
Qin Shengfei,Zhao Jingzhou,Li Meishui,et al.2006.A casestudy:geochemical tracing indices on the migration of water-soluble gases in Hetianhe gas field,Tari mbasin.Earth ScienceFrontiers,13(5):524～321(in Chinese with English abstract).
Qiu Yunyu,Xu Lian,Huang Hualiang,1994,Preli minarydiscussion pool-formed patterns in Weiyuan gas field.NatureGas Industry,14(1):9～13(in Chinese with Englishabstract).
Song Wenhai.1996.Research on reservoir-formed conditions oflarge-medium gas fields of Leshan-Longnusi palaeohigh.Nature Gas Industry,16:13～26(in Chinese with Englishabstract).
Song Yan,Qin Shengfei,Zhao Mengjun.2007.Two key geologicalfactors controlling the coalbed methane reservoirs in China.Natural Gas Geoscience,18(4):545～553(in Chinese withEnglish abstract).
Sun Wei,Liu Shugen,Ma Yongsheng,et al.2007.Determinationand quantitative si mulation of gas pool formation process ofSinian cracked gas in Weiyuan-Ziyang area,Sichuan basin.Acta Geologica Sinica,81(8):1153～1159(in Chinese withEnglish abstract).
Tang Junhong,Zhang Tongwei,Bao Zhengyu,et al.2004.Studyof organic inclusions in the carbonate reservoir bed of Weiyuangas fieldin the Sichuan basin.Geological Review,50(2):210～214(in Chinese with English abstract).
Wang Zecheng.Zhao Wenzhi.Zhang Lin,et al.2002.The basinstructure sequence and gas exploration of Sichuan basin.Beijing:Geological Publishing House(in Chinese).
Wang Xingzhi,Huang Jixiang,Hou Fanghao,et al.1996.Characteristics of deposition and sequence stratigraphy ofreservoirinterval in Sinian Dengying Formationin Ziyang anditsneighbouring area.Journal of Southwest-China PetroleumInstitute,18(3):1～9(in Chinese with English abstract).
Wang Xingzhi,Mu Shuguang,Huang Jixiang.1998.The traps ofthe Dengying Formation reservoirs in Ziyang of Sichuan.ChinaOffshore Oil&Gas,12(6):386～389(in Chinese with Englishabstract).
Xu Shiqi,Hong Haitao,Li Xiang.2002.The reservoircharacteristic and disciplinarian of Sinian in Sichuan basin.Natural Gas Exploraiton&Development,25(4):1～5(inChinese with English abstract).
Xu Shiqi,Zhang Guangrong.1999.the distribution and control factsof gas reservoir of Sinianin Ziyang area,Sichuan basin.NaturalGas Exploraiton&Development,22(3):1～5(in Chinese withEnglish abstract).
Yin Changhe.Wang Tingdong.Wang Shunyu,et al.2001.Differences between kerogen and oil cracded gases in Sinianreservoirs of Weiyuan and Ziyang area.Acta Sedi mentologicaSinica,19(1):156～160(in Chinese with English abstract).
Zhang Ruoxiang.Wang Xingzhi.Lan Daqiao,et al.2006.Analysison hydrocarbon accumulation conditions of DenyingzuFormation of Sinian Systemin Ziyang of Sichuan basin.8(1):14～17(in Chinese with English abstract).
Zhang Zishu.1995.Discuss of solution gas.Natural GasGeoscience,31(6):29～34(in Chinese with English abstract).
[2]史习杰,等.1995.四川资阳地区震旦系气藏成藏条件研究和气藏描述.四川石油管理局新区勘探研究成果报告.
[3]熊荣国,等.1998.四川盆地加里东古隆起构造发展及圈闭评价研究报告.四川石油管理局报告.
[4]梁兴,等,2000.四川盆地威远气田震旦系灯影组气藏调研报告.中石化南方公司.
戴金星.1992.各类天然气的成因鉴别.中国海上油气(地质).6(1):11～19.
付晓泰,卢双舫,王振平.1997.天然气的溶解特征及其意义.地球化学,26(3):60～66.
黄籍中,陈盛吉.1993.震旦系气藏形成的烃源地球化学条件分析.天然气地球科学,(4):16～20.
李一平.1996.四川盆地已知大中型气田成藏条件研究.天然气工业.16(增刊):1～12.
刘树根,马永生,黄文明,等.2007.四川盆地上震旦统灯影组储集层致密化过程研究.天然气地球化学,18(4):485～496.
罗志立,李景明,刘树根,等.2005.中国板块构造和含油气盆地分析.北京:石油工业出版社.
秦胜飞,赵靖舟,李梅水,等.2006.水溶天然气运移地球化学示踪——以塔里木盆地和田河气田为例.地学前缘,13(5):524～321.
邱蕴玉,徐濂,黄华梁.1994.威远气田成藏模式初探.天然气工业,14(1):9～13.
宋文海.1996.乐山-龙女寺古隆起大中型气田成藏条件研究.天然气工作,16(增刊):13～26.
宋岩,秦胜飞,赵孟军.2007.中国煤层气成藏的两大关键地质因素.天然气地球化学,18(4):545～553.
孙玮,刘树根,马永生,等.2007.四川盆地威远-资阳地区震旦系油裂解气判定及成藏过程定量模拟.地质学报,81(8):1153～1159.
唐俊红,张同伟,鲍征宇,等.2004.四川盆地威远气田碳酸盐岩中有机包裹体研究.地质论评,50(2):210～214.
汪泽成,赵文智,张林,等.2002.四川盆地构造层序与天然气勘探,北京:地质出版社.
王兴志,黄继祥,侯方浩,等.1996.四川资阳及邻区震旦系灯影组储层段沉积及层序地层学特征,西南石油学院学报.18(3):1～9.
王兴志,穆曙光,黄继祥,等.1998.四川资阳地区灯影组气藏储渗体圈闭类型.中国海上油气地质,12(6):386～389.
徐世琦,洪海涛,李翔.2002.四川盆地震旦系油气成藏特征与规律天然气勘探与开发,25(4):1～5.
徐世琦,张光荣.1999.四川盆地资阳地区震旦系气藏储层分布与控制因素.天然气勘探与开发,22(3):1～5.
尹长河,王廷栋,王顺玉,等.2001.威远、资阳震旦系干酪根与油裂解气的鉴别.沉积学报,19(1):156～160.
张若祥,王兴志,蓝大樵,等.2006.四川盆地资阳地区震旦系灯影组油气成藏条件分析.重应科技学院学报(自然科学版),8(1):14～17.
张子枢.1995.水溶气浅论.天然气地球科学,31(6):29～34.
Dai Jinxing.1992.Identify the genesis of various gases.ChinaOffshore Oil&Gas,6(1):11～19(in Chinese with Englishabstract).
Fu Xiaotai,Lu Shuangfang,Wang Zhenping.1997.Dissolvingcharacter for the components of natural gas andits significance.Geochi mica,26(3):60～66(in Chinese with English abstract).
Huang Jizhong,Chen Shengji.1993.Hydrocarbon origingeochemical conditions analysis of forming of Sinian gas pool.Nature Gas Geochemistry,(4):16～20(in Chinese).
Li Yiping.1996.Reservoir-formed condition research on theknownlarge-medium gas fieles in Sichuan basin.Nature GasIndustry,16:1～12(in Chinese with English abstract).
Liu Shugen,Ma Yongsheng,Huang Wenming,et al.2007.Densification process of upper Sinian Dengying Formation,Sichuan basin.Natural Gas Geoscience,18(4):485～496(inChinese with English abstract).
Luo Zhili,Li Jingming,Liu Shugen,et al.2005.Plate Tectonic andAnalysis of Petroliferous Basins in China.Beijing:PetroleumIndustry Press(in Chinese).
Qin Shengfei,Zhao Jingzhou,Li Meishui,et al.2006.A casestudy:geochemical tracing indices on the migration of water-soluble gases in Hetianhe gas field,Tari mbasin.Earth ScienceFrontiers,13(5):524～321(in Chinese with English abstract).
Qiu Yunyu,Xu Lian,Huang Hualiang,1994,Preli minarydiscussion pool-formed patterns in Weiyuan gas field.NatureGas Industry,14(1):9～13(in Chinese with Englishabstract).
Song Wenhai.1996.Research on reservoir-formed conditions oflarge-medium gas fields of Leshan-Longnusi palaeohigh.Nature Gas Industry,16:13～26(in Chinese with Englishabstract).
Song Yan,Qin Shengfei,Zhao Mengjun.2007.Two key geologicalfactors controlling the coalbed methane reservoirs in China.Natural Gas Geoscience,18(4):545～553(in Chinese withEnglish abstract).
Sun Wei,Liu Shugen,Ma Yongsheng,et al.2007.Determinationand quantitative si mulation of gas pool formation process ofSinian cracked gas in Weiyuan-Ziyang area,Sichuan basin.Acta Geologica Sinica,81(8):1153～1159(in Chinese withEnglish abstract).
Tang Junhong,Zhang Tongwei,Bao Zhengyu,et al.2004.Studyof organic inclusions in the carbonate reservoir bed of Weiyuangas fieldin the Sichuan basin.Geological Review,50(2):210～214(in Chinese with English abstract).
Wang Zecheng.Zhao Wenzhi.Zhang Lin,et al.2002.The basinstructure sequence and gas exploration of Sichuan basin.Beijing:Geological Publishing House(in Chinese).
Wang Xingzhi,Huang Jixiang,Hou Fanghao,et al.1996.Characteristics of deposition and sequence stratigraphy ofreservoirinterval in Sinian Dengying Formationin Ziyang anditsneighbouring area.Journal of Southwest-China PetroleumInstitute,18(3):1～9(in Chinese with English abstract).
Wang Xingzhi,Mu Shuguang,Huang Jixiang.1998.The traps ofthe Dengying Formation reservoirs in Ziyang of Sichuan.ChinaOffshore Oil&Gas,12(6):386～389(in Chinese with Englishabstract).
Xu Shiqi,Hong Haitao,Li Xiang.2002.The reservoircharacteristic and disciplinarian of Sinian in Sichuan basin.Natural Gas Exploraiton&Development,25(4):1～5(inChinese with English abstract).
Xu Shiqi,Zhang Guangrong.1999.the distribution and control factsof gas reservoir of Sinianin Ziyang area,Sichuan basin.NaturalGas Exploraiton&Development,22(3):1～5(in Chinese withEnglish abstract).
Yin Changhe.Wang Tingdong.Wang Shunyu,et al.2001.Differences between kerogen and oil cracded gases in Sinianreservoirs of Weiyuan and Ziyang area.Acta Sedi mentologicaSinica,19(1):156～160(in Chinese with English abstract).
Zhang Ruoxiang.Wang Xingzhi.Lan Daqiao,et al.2006.Analysison hydrocarbon accumulation conditions of DenyingzuFormation of Sinian Systemin Ziyang of Sichuan basin.8(1):14～17(in Chinese with English abstract).
Zhang Zishu.1995.Discuss of solution gas.Natural GasGeoscience,31(6):29～34(in Chinese with English abstract).
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心