四川盆地震旦系大气田形成条件与勘探远景区
|
摘要
基于对四川盆地乐山—龙女寺古隆起演化和震旦系沉积相、烃源岩、储集层、盖层等成藏条件的研究,分析四川盆地震旦系天然气勘探潜力。四川盆地震旦系具备形成大气田的成藏条件:①大型继承性古隆起为震旦系油气形成、聚集提供了条件;②稳定的沉积背景奠定了储集体和烃源岩大面积发育的基础;③灯二段、灯三段和灯四段3套储集层相互叠置,大面积发育;④多套烃源岩纵向叠置,大面积分布,与储集层呈"三明治"互层结构;⑤区域性泥岩盖层厚度大、盆地内断裂不发育,保存条件好。根据不同区域有利成藏条件的不同,优选了4个震旦系有利勘探远景区:乐山—龙女寺古隆起远景区、川东南远景区、川东远景区和川西北远景区,其中乐山—龙女寺古隆起远景区成藏条件最为有利,其核部的继承性古构造圈闭为勘探首选,斜坡部位的地层-岩性气藏值得探索。
Exploration potential of natural gas in the Sinian,Sichuan Basin,was analyzed based on the research on evolution of Leshan-Longnüsi palaeouplift and reservoir forming conditions such as sedimentary facies,source rocks,reservoirs and caprocks.The Sinian has a potential to form large gas fields in the Sichuan Basin:(1) A large-scale inherited palaeouplift provides conditions for oil/gas formation and accumulation.(2) Stable sedimentary environment guarantees the extensive development of source rocks and reservoirs.(3) Sinian Deng-2,Deng-3 and Deng-4 reservoirs overlap each other and are developed widely.(4) Multiple source rocks overlay vertically and are distributed widely,superimposed between reservoirs like "sandwiches".(5) The Sinian has good preservation conditions,regional mudstone cap rocks are thick and faults are not developed.Considering favorable reservoir forming conditions,four favorable prospective areas are selected: Leshan-Longnüsi Palaeouplift,Southeast Sichuan,East Sichuan,and Northwest Sichuan.The Leshan-Longnüsi palaeouplift is the most favorable area,where inherited palaeostructural traps in the core are first priority and the litho-stratigraphic gas reservoirs in the slope deserve exploration.
Exploration potential of natural gas in the Sinian,Sichuan Basin,was analyzed based on the research on evolution of Leshan-Longnüsi palaeouplift and reservoir forming conditions such as sedimentary facies,source rocks,reservoirs and caprocks.The Sinian has a potential to form large gas fields in the Sichuan Basin:(1) A large-scale inherited palaeouplift provides conditions for oil/gas formation and accumulation.(2) Stable sedimentary environment guarantees the extensive development of source rocks and reservoirs.(3) Sinian Deng-2,Deng-3 and Deng-4 reservoirs overlap each other and are developed widely.(4) Multiple source rocks overlay vertically and are distributed widely,superimposed between reservoirs like "sandwiches".(5) The Sinian has good preservation conditions,regional mudstone cap rocks are thick and faults are not developed.Considering favorable reservoir forming conditions,four favorable prospective areas are selected: Leshan-Longnüsi Palaeouplift,Southeast Sichuan,East Sichuan,and Northwest Sichuan.The Leshan-Longnüsi palaeouplift is the most favorable area,where inherited palaeostructural traps in the core are first priority and the litho-stratigraphic gas reservoirs in the slope deserve exploration.
引文
[1]魏国齐,刘德来,张林,等.四川盆地天然气分布规律与有利勘探领域[J].天然气地球科学,2005,16(4):437-442.Wei Guoqi,Liu Delai,Zhang Lin,et al.The exploration region andnatural gas accumulation in Sichuan Basin[J].Natural Gas Geoscience,2005,16(4):437-442.
[2]李智武,刘树根,陈洪德,等.川西坳陷复合-联合构造及其对油气的控制[J].石油勘探与开发,2011,38(5):538-551.Li Zhiwu,Liu Shugen,Chen Hongde,et al.Structuralsuperimposition and conjunction and its effects on hydrocarbonaccumulation in the Western Sichuan Depression[J].PetroleumExploration and Development,2011,38(5):538-551.
[3]张光荣,徐世琦,蒋小光,等.乐山—龙女寺古隆起区含气有利区带评价[J].天然气工业,2008,28(增刊A):19-21.Zhang Guangrong,Xu Shiqi,Jiang Xiaoguang,et al.Evaluation offavorable area of bearing gas in Leshan-Longnüsi Palaeouplift[J].Natural Gas Industry,2008,28(Supp.A):19-21.
[4]宋文海.乐山—龙女寺古隆起大中型气田成藏条件研究[J].天然气工业,1996,16(增刊):16-26.Song Wenhai.Research on reservoir-formed conditions oflarge-medium gas fields of Leshan-Longnüsi Palaeouplift[J].NaturalGas Industry,1996,16(Supp.):16-26.
[5]李伟,余华琪,邓鸿斌.四川盆地中南部寒武系地层划分对比与沉积演化特征[J].石油勘探与开发,2012,39(6):681-690.Li Wei,Yu Huaqi,Deng Hongbin.Stratigraphic division andcorrelation and sedimentary characteristics of the Cambrian incentral-southern Sichuan Basin[J].Petroleum Exploration andDevelopment,2012,39(6):681-690.
[6]李国辉,李翔,杨西南.四川盆地加里东古隆起震旦系气藏成藏控制因素[J].石油与天然气地质,2000,21(1):80-82.Li Guohui,Li Xiang,Yang Xi’nan.Controlling factors of Sinian gaspools in Caledonian Paleouplift,Sichuan Basin[J].Oil&GasGeology,2000,21(1):80-82.
[7]黄金亮,邹才能,李建忠,等.川南下寒武统筇竹寺组页岩气形成条件及资源潜力[J].石油勘探与开发,2012,39(1):69-75.Huang Jinliang,Zou Caineng,Li Jianzhong,et al.Shale gasgeneration and potential of the Lower Cambrian QiongzhusiFormation in Southern Sichuan Basin,China[J].PetroleumExploration and Development,2012,39(1):69-75.
[8]邓涛.四川盆地加里东古隆起的构造机制和成藏模式[J].石油实验地质,1996,18(4):356-360.Deng Tao.Tectonic mechanism and pooling model of the CaledonianPaleoswell in Sichuan Basin[J].Experimental Petroleum Geology,1996,18(4):356-360.
[9]魏国齐,焦贵浩,杨威,等.四川盆地震旦系—下古生界天然气成藏条件与勘探前景[J].天然气工业,2010,30(12):5-9.Wei Guoqi,Jiao Guihao,Yang Wei,et al.Hydrocarbon poolingconditions and exploration potential of Sinian-Lower Paleozoic gasreservoirs in the Sichuan Basin[J].Natural Gas Industry,2010,30(12):5-9.
[10]计德华,岳宏.川西南震旦系油气勘探前景的探讨[J].天然气工业,1986,6(1):10-14.Ji Dehua,Yue Hong.A discussion on oil and exploration prospects ofSinian in Southwest Sichuan[J].Natural Gas Industry,1986,6(1):10-14.
[11]徐永昌,沈平,李玉成.中国最古老的气藏:四川威远震旦纪气藏[J].沉积学报,1989,7(4):3-12.Xu Yongchang,Shen Ping,Li Yucheng.The oldest gas pool of China:Weiyuan Sinian gas pool,Sichuan Province[J].Acta SedimentologicaSinica,1989,7(4):3-12.
[12]许海龙,魏国齐,贾承造,等.乐山—龙女寺古隆起构造演化及对震旦系成藏的控制[J].石油勘探与开发,2012,39(4):406-416.Xu Hailong,Wei Guoqi,Jia Chengzao,et al.Tectonic evolution of theLeshan-Longnüsi paleo-uplift and its control on gas accumulation in theSinian strata,Sichuan Basin[J].Petroleum Exploration andDevelopment,2012,39(4):406-416.
[13]陈宗清.四川盆地震旦系灯影组天然气勘探[J].中国石油勘探,2010,13(4):1-14.Chen Zongqing.Gas exploration in Sinian Dengying Formation,Sichuan Basin[J].China Petroleum Exploration,2010,13(4):1-14.
[14]邱蕴玉,徐濂,黄华梁.威远气田成藏模式初探[J].天然气工业,1994,14(1):9-13.Qiu Yunyu,Xu Lian,Huang Hualiang.Preliminary discussion onpool-formed patterns in Weiyuan Gas Field[J].Natural Gas Industry,1994,14(1):9-13.
[15]戴金星.威远气田成藏期及气源[J].石油实验地质,2003,25(5):473-479.Dai Jinxing.Pool-forming periods and gas sources of Weiyuan GasField[J].Experimental Petroleum Geology,2003,25(5):473-479.
[16]张声瑜,唐创基.四川盆地灯影组区域地质条件及含气远景[J].天然气工业,1986,6(1):3-9.Zhang Shengyu,Tang Chuangji.Regional geology conditions ofDengying Formation(Sinian)in Sichuan Basin and its gasprospects[J].Natural Gas Industry,1986,6(1):3-9.
[17]尹长河,王廷栋,王顺玉,等.威远、资阳震旦系干酪根与油裂解气的鉴别[J].沉积学报,2001,19(1):156-160.Yin Changhe,Wang Tingdong,Wang Shunyu,et al.Differences betweenKerogen and oil-cracked gases in Sinian reservoirs of Weiyuan andZiyang area[J].Acta Sedimentologica Sinica,2001,19(1):156-160.
[18]陈文正.再论四川盆地威远震旦系气藏的气源[J].天然气工业,1992,12(6):28-32.Chen Wenzheng.Discussing again on the source of Sinian gas poolin Weiyuan area in Sichuan Basin[J].Natural Gas Industry,1992,12(6):28-32.
[19]黄籍中,陈盛吉.四川盆地震旦系气藏形成的烃源地化条件分析:以威远气田为例[J].天然气地球科学,1993,4(4):16-20.Huang Jizhong,Chen Shengji.The source geochemical conditions ofSinian in Sichuan Basin:Take Weiyuan Gas Field as an example[J].Natural Gas Geoscience,1993,4(4):16-20.
[20]徐世琦,张光荣,李国辉,等.加里东古隆起震旦系的烃源条件[J].成都理工学院学报,2000,27(增刊):131-138.Xu Shiqi,Zhang Guangrong,Li Guohui,et al.The hydrocarbonsource condition of Sinian system of the Caledonian palaeo-uplift[J].Journal of Chengdu University of Technology,2000,27(Supp.):131-138.
[21]秦建中,刘宝泉.海相不同类型烃源岩生排烃模式研究[J].石油实验地质,2005,27(1):74-80.Qin Jianzhong,Liu Baoquan.Models of hydrocarbon generation andexploration and expulsion from various marine source rock[J].Experimental Petroleum Geology,2005,27(1):74-80.
[22]陈明,许效松,万方,等.上扬子台地晚震旦世灯影组中葡萄状-雪花状白云岩的成因意义[J].矿物岩石,2002,22(4):33-37.Chen Ming,Xu Xiaosong,Wan Fang,et al.Genesis and significanceof grape-and snowflake-shaped dolomite from Dengying Formationof upper Sinian in upper Yangtze platform region[J].Journal ofMineralogy and Petrology,2002,22(4):33-37.
[2]李智武,刘树根,陈洪德,等.川西坳陷复合-联合构造及其对油气的控制[J].石油勘探与开发,2011,38(5):538-551.Li Zhiwu,Liu Shugen,Chen Hongde,et al.Structuralsuperimposition and conjunction and its effects on hydrocarbonaccumulation in the Western Sichuan Depression[J].PetroleumExploration and Development,2011,38(5):538-551.
[3]张光荣,徐世琦,蒋小光,等.乐山—龙女寺古隆起区含气有利区带评价[J].天然气工业,2008,28(增刊A):19-21.Zhang Guangrong,Xu Shiqi,Jiang Xiaoguang,et al.Evaluation offavorable area of bearing gas in Leshan-Longnüsi Palaeouplift[J].Natural Gas Industry,2008,28(Supp.A):19-21.
[4]宋文海.乐山—龙女寺古隆起大中型气田成藏条件研究[J].天然气工业,1996,16(增刊):16-26.Song Wenhai.Research on reservoir-formed conditions oflarge-medium gas fields of Leshan-Longnüsi Palaeouplift[J].NaturalGas Industry,1996,16(Supp.):16-26.
[5]李伟,余华琪,邓鸿斌.四川盆地中南部寒武系地层划分对比与沉积演化特征[J].石油勘探与开发,2012,39(6):681-690.Li Wei,Yu Huaqi,Deng Hongbin.Stratigraphic division andcorrelation and sedimentary characteristics of the Cambrian incentral-southern Sichuan Basin[J].Petroleum Exploration andDevelopment,2012,39(6):681-690.
[6]李国辉,李翔,杨西南.四川盆地加里东古隆起震旦系气藏成藏控制因素[J].石油与天然气地质,2000,21(1):80-82.Li Guohui,Li Xiang,Yang Xi’nan.Controlling factors of Sinian gaspools in Caledonian Paleouplift,Sichuan Basin[J].Oil&GasGeology,2000,21(1):80-82.
[7]黄金亮,邹才能,李建忠,等.川南下寒武统筇竹寺组页岩气形成条件及资源潜力[J].石油勘探与开发,2012,39(1):69-75.Huang Jinliang,Zou Caineng,Li Jianzhong,et al.Shale gasgeneration and potential of the Lower Cambrian QiongzhusiFormation in Southern Sichuan Basin,China[J].PetroleumExploration and Development,2012,39(1):69-75.
[8]邓涛.四川盆地加里东古隆起的构造机制和成藏模式[J].石油实验地质,1996,18(4):356-360.Deng Tao.Tectonic mechanism and pooling model of the CaledonianPaleoswell in Sichuan Basin[J].Experimental Petroleum Geology,1996,18(4):356-360.
[9]魏国齐,焦贵浩,杨威,等.四川盆地震旦系—下古生界天然气成藏条件与勘探前景[J].天然气工业,2010,30(12):5-9.Wei Guoqi,Jiao Guihao,Yang Wei,et al.Hydrocarbon poolingconditions and exploration potential of Sinian-Lower Paleozoic gasreservoirs in the Sichuan Basin[J].Natural Gas Industry,2010,30(12):5-9.
[10]计德华,岳宏.川西南震旦系油气勘探前景的探讨[J].天然气工业,1986,6(1):10-14.Ji Dehua,Yue Hong.A discussion on oil and exploration prospects ofSinian in Southwest Sichuan[J].Natural Gas Industry,1986,6(1):10-14.
[11]徐永昌,沈平,李玉成.中国最古老的气藏:四川威远震旦纪气藏[J].沉积学报,1989,7(4):3-12.Xu Yongchang,Shen Ping,Li Yucheng.The oldest gas pool of China:Weiyuan Sinian gas pool,Sichuan Province[J].Acta SedimentologicaSinica,1989,7(4):3-12.
[12]许海龙,魏国齐,贾承造,等.乐山—龙女寺古隆起构造演化及对震旦系成藏的控制[J].石油勘探与开发,2012,39(4):406-416.Xu Hailong,Wei Guoqi,Jia Chengzao,et al.Tectonic evolution of theLeshan-Longnüsi paleo-uplift and its control on gas accumulation in theSinian strata,Sichuan Basin[J].Petroleum Exploration andDevelopment,2012,39(4):406-416.
[13]陈宗清.四川盆地震旦系灯影组天然气勘探[J].中国石油勘探,2010,13(4):1-14.Chen Zongqing.Gas exploration in Sinian Dengying Formation,Sichuan Basin[J].China Petroleum Exploration,2010,13(4):1-14.
[14]邱蕴玉,徐濂,黄华梁.威远气田成藏模式初探[J].天然气工业,1994,14(1):9-13.Qiu Yunyu,Xu Lian,Huang Hualiang.Preliminary discussion onpool-formed patterns in Weiyuan Gas Field[J].Natural Gas Industry,1994,14(1):9-13.
[15]戴金星.威远气田成藏期及气源[J].石油实验地质,2003,25(5):473-479.Dai Jinxing.Pool-forming periods and gas sources of Weiyuan GasField[J].Experimental Petroleum Geology,2003,25(5):473-479.
[16]张声瑜,唐创基.四川盆地灯影组区域地质条件及含气远景[J].天然气工业,1986,6(1):3-9.Zhang Shengyu,Tang Chuangji.Regional geology conditions ofDengying Formation(Sinian)in Sichuan Basin and its gasprospects[J].Natural Gas Industry,1986,6(1):3-9.
[17]尹长河,王廷栋,王顺玉,等.威远、资阳震旦系干酪根与油裂解气的鉴别[J].沉积学报,2001,19(1):156-160.Yin Changhe,Wang Tingdong,Wang Shunyu,et al.Differences betweenKerogen and oil-cracked gases in Sinian reservoirs of Weiyuan andZiyang area[J].Acta Sedimentologica Sinica,2001,19(1):156-160.
[18]陈文正.再论四川盆地威远震旦系气藏的气源[J].天然气工业,1992,12(6):28-32.Chen Wenzheng.Discussing again on the source of Sinian gas poolin Weiyuan area in Sichuan Basin[J].Natural Gas Industry,1992,12(6):28-32.
[19]黄籍中,陈盛吉.四川盆地震旦系气藏形成的烃源地化条件分析:以威远气田为例[J].天然气地球科学,1993,4(4):16-20.Huang Jizhong,Chen Shengji.The source geochemical conditions ofSinian in Sichuan Basin:Take Weiyuan Gas Field as an example[J].Natural Gas Geoscience,1993,4(4):16-20.
[20]徐世琦,张光荣,李国辉,等.加里东古隆起震旦系的烃源条件[J].成都理工学院学报,2000,27(增刊):131-138.Xu Shiqi,Zhang Guangrong,Li Guohui,et al.The hydrocarbonsource condition of Sinian system of the Caledonian palaeo-uplift[J].Journal of Chengdu University of Technology,2000,27(Supp.):131-138.
[21]秦建中,刘宝泉.海相不同类型烃源岩生排烃模式研究[J].石油实验地质,2005,27(1):74-80.Qin Jianzhong,Liu Baoquan.Models of hydrocarbon generation andexploration and expulsion from various marine source rock[J].Experimental Petroleum Geology,2005,27(1):74-80.
[22]陈明,许效松,万方,等.上扬子台地晚震旦世灯影组中葡萄状-雪花状白云岩的成因意义[J].矿物岩石,2002,22(4):33-37.Chen Ming,Xu Xiaosong,Wan Fang,et al.Genesis and significanceof grape-and snowflake-shaped dolomite from Dengying Formationof upper Sinian in upper Yangtze platform region[J].Journal ofMineralogy and Petrology,2002,22(4):33-37.
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