川西坳陷上三叠统成藏年代学特征

doi:10.11743/ogg20050212

摘要/Abstract

摘要：

川西坳陷上三叠统可划分为两套生储盖组合:下部组合的生排烃高峰期为晚三叠世中晚期;上部组合的生排烃高峰期为晚侏罗世。导致须家河组储层致密化的原因:一是机械压实;二是自生矿物充填。须家河组储层致密化时期为中侏罗世上沙溪庙期末至晚白垩世。流体包裹体指示须家河组二段气藏的主要充注时期为须家河期须四时末至中侏罗世末。多期次的构造运动在川西坳陷形成了多期次的圈闭,以燕山期形成的大型古隆起与油气运聚匹配最好。综合源岩生排烃期、储层致密化期、流体充注储层时期、圈闭形成期,可以确定川西坳陷上三叠统的主要成藏期为印支中晚期—燕山中晚期。

关键词: 川西, 上三叠统, 致密化, 圈闭, 油气充注, 成藏年代

Abstract:

The Upper Triassic in western Sichuan depression can be divided into 2 source-reservoir-cap rock combinations. The peak of hydrocarbon generation and expulsion in the lower combination occurred during middle-late stages of Late Triassic; while that in the upper combination occurred in Late Jurassic. Both mechanical compaction and infilling of authigenic minerals would have contributed to the tightening of reservoirs in Xujiahe Fm, which occurred at the end of the Middle Jurassic Upper Shaximiao through to Late Cretaceous. Analysis of fluid inclusions indicates that gas reservoirs in the 2^nd member of Xujiahe Fm were charged mainly at the end of the deposition of the 4^th member of Xujiahe Fm through to the end of Middle Jurassic. Multiple phases of tectonic movements resulted in polyphase traps in western Sichuan depression, of which the large Yanshanian palaeohigh had the best timing with hydrocarbon migration and accumulation. Based on the stages of hydrocarbon generation and expulsion, tightening of reservoirs, fluid charging and trap formation, it can be determined that the main reservoiring stage in the Upper Triassic in western Sichuan depression would be from middle-late Indosinian to middle-late Yanshanian.

Key words: western Sichuan, Upper Triassic, tightening, trap, hydrocarbon charging, reservoiring period

中图分类号:

TE112.111

杨克明, 叶军, 吕正祥. 川西坳陷上三叠统成藏年代学特征[J]. 石油与天然气地质, 2005, 26(2): 208-213.

Yang Keming, Ye Jun, Lü Zhengxiang. Chronological characteristics of Upper Triassic reservoirs in western Sichuan depression[J]. Oil & Gas Geology, 2005, 26(2): 208-213.

参考文献

[1] 王金琪.川西坳陷须家河组气藏再认识[J].天然气工业,2002, 22(2):1～4Wang Jinqi.Recognition of Xujiahe gas pool in western Sichuan depressiom[J]. Natural Gas Industry, 2002, 22(2):1-4
[2] 王金琪.早聚晚藏-川西坳陷天然气基本特征[J].天然气工业,2001, 21(1):1～6Wang Jinqi. Early accumulation and late formation-basic characteristics of natural gas in western Sichuan depression[J]. Natural Gas Industry, 2001,21(1):1-6
[3] 刘树根,罗志立,戴苏兰.川西前陆盆地的"四川运动"及与油气的关系[J].石油与天然气地质,1996,17(4):276～281Liu Shugen,Luo Zhili, Dai Sulan,et al. Sichuan movement in western Sichuan foreland basin and its relation to oil and gas[J]. Oil & Gas Geology, 1996, 17(4):276-281
[4] 王庭斌.中国气田的成藏特征分析[J].石油与天然气地质,2003,24(2):103～110Wang Tingbin.Reservoiring characteristic analysis of gasfields in China[J]. Oil & Gas Geology, 2003, 24 (2):103-110
[5] 李晓清,汪泽成,张兴为,等.四川盆地古隆起特征及对天然气的控制作用[J].石油与天然气地质,2001,22(4):347～350Li Xiaoqing,Wang Zecheng,Zhang Xingwei,et al. Characteristics of paleo-uplifts in Sichuan basin and their control action on natural gas[J]. Oil & Gas Geology, 2001, 22(4):347-350
[6] 邢焕清,姜在兴,王亚青,等.川西前陆盆地上三叠统须家河组二段可容空间转换系统的成因与演化[J]. 石油与天然气地质,2004,25(5):519～523Xing Huanqing,Jiang Zaixing,Wang Yaqing,et al.Genesis and evolution of accommodation transformation systems in 2nd member of Upper Triassic Xujiahe Formation,Chuanxi foreland basin[J]. Oil & Gas Geology, 2004,25(5):519-523
[7] 杨克明,叶军,吕正祥.川西坳陷上三叠统须家河组天然气分布及成藏特征[J].石油与天然气地质,2004,25(5):501～505 Yang Keming, Ye Jun,Lu Zhengxiang.Characteristics of gas distribution and gas reservoiring in Upper Triassic Xujiahe Formation in westen Sichuan depression[J]. Oil & Gas Geology, 2004, 25(5):501-505
[8] 杨克明.川西坳陷油气资源现状及勘探潜力[J]. 石油与天然气地质,2003,24(4):322～326Yang Keming.Status of oil & gas resources and prospecting potential in western Sichuan depression[J]. Oil & Gas Geology, 2003,24(4):322-326
[9] Bloch S.Empirical prediction of porosity and permeability in sandstones[J].AAPG Bull,1991,75:1 145-1 160
[10] 柳少波,顾家裕.包裹体在石油地质研究中的应用与问题讨论[J].石油与天然气地质,1997,18(4):326～331Liu Shaobo,Gu Jiayu.Application of fluid inclusions to petroleum geological study and discussion[J]. Oil & Gas Geology, 1997, 18(4):326-331
[11] 张厚福.石油地质学[M].北京:石油工业出版社,2001.184Zhang Houfu. Petroleum geology[M].Beijing:Petroleum Industry Press,2001.184
[12] 吴世祥,汪泽成,张林,等.川西前陆盆地勘探思路分析[J].石油与天然气地质,2001,22(3):210～216Wu Shixiang,Wang Zecheng,Zhang Lin,et al. Exploration strategy for the foreland basin in western Sichuan[J]. Oil & Gas Geology, 2001, 22(3):210-216
[13] 叶军.川西坳陷的天然气是深盆气吗?[J].天然气工业,2003,23(增刊):1～5Ye Jun. Reservoir mechanism of natural gas in west Sichuan depression[J]. Natural Gas Industry, 2003, 23(Sup):1-5

[1]	翟常博, 林良彪, 尤东华, 刘冯斌, 刘思雨. 川西南地区中二叠统茅口组一段沉积微相特征及有机质富集模式[J]. 石油与天然气地质, 2024, 45(2): 440-456.
[2]	远光辉, 彭光荣, 张丽丽, 孙辉, 陈淑慧, 刘浩, 赵晓阳. 珠江口盆地白云凹陷古近系深层高变温背景下储层成岩作用与低渗致密化机制[J]. 石油与天然气地质, 2024, 45(1): 44-64.
[3]	李双建, 李智, 张磊, 李英强, 孟宪武, 王海军. 四川盆地川西坳陷三叠系盐下超深层油气成藏条件与勘探方向[J]. 石油与天然气地质, 2023, 44(6): 1555-1567.
[4]	刘佳庚, 王艳忠, 操应长, 王淑萍, 李雪哲, 王铸坤. 渤海湾盆地东营凹陷民丰洼陷陡坡带深层-超深层碎屑岩优质储层控制因素[J]. 石油与天然气地质, 2023, 44(5): 1203-1217.
[5]	刘建章, 蔡忠贤, 滕长宇, 张恒, 陈诚. 塔里木盆地顺北地区克拉通内走滑断裂带中-下奥陶统储集体方解石脉形成及其与油气充注耦合关系[J]. 石油与天然气地质, 2023, 44(1): 125-137.
[6]	田辉, 吴子瑾, 盖海峰, 王星. 川西北地区中泥盆统腐泥型烃源岩晚期生气特征实验研究[J]. 石油与天然气地质, 2023, 44(1): 46-54.
[7]	王德英, 刘晓健, 邓辉, 刘永江, 李德郁. 渤海湾盆地渤中19-6区中-新生代构造转换特征及其对太古宇潜山大规模储层形成的控制作用[J]. 石油与天然气地质, 2022, 43(6): 1334-1346.
[8]	王冰洁, 王德英, 王鑫, 惠冠洲, 薛明旺. 渤海湾盆地辽中凹陷南洼走滑转换带特征及其对大、中型油田的控制作用[J]. 石油与天然气地质, 2022, 43(6): 1347-1358.
[9]	胡德胜, 宫立园, 满晓, 戴伊宁, 柳智萱. 北部湾盆地涠西南凹陷雁列断层变换带发育特征及其控储作用[J]. 石油与天然气地质, 2022, 43(6): 1359-1369.
[10]	李建忠, 王小军, 杨帆, 宋永, 阿布力米提·依明null, 卞保力, 刘海磊, 王学勇, 龚德瑜. 准噶尔盆地中央坳陷西部下组合油气成藏模式及勘探前景[J]. 石油与天然气地质, 2022, 43(5): 1059-1072.
[11]	田景春, 梁庆韶, 王峰, 余威. 陆相湖盆致密油储集砂体成因及发育模式[J]. 石油与天然气地质, 2022, 43(4): 877-888.
[12]	何发岐, 董昭雄. 深部煤层气资源开发潜力[J]. 石油与天然气地质, 2022, 43(2): 277-285.
[13]	徐亮, 杨威, 姜振学, 陈冬霞, 王耀华, 鲁健康, 赵明珠, 李兰. 四川盆地川西坳陷三叠系须家河组页岩有机孔演化及成因[J]. 石油与天然气地质, 2022, 43(2): 325-340.
[14]	苏成鹏, 何莹, 宋晓波, 董波, 吴小奇. 四川盆地川西气田中三叠统雷口坡组气藏气源再认识[J]. 石油与天然气地质, 2022, 43(2): 341-352.
[15]	吴小奇, 陈迎宾, 翟常博, 周凌方, 周小进, 杨俊, 王彦青, 宋晓波. 川西坳陷中三叠统雷口坡组沥青地球化学特征及气源示踪[J]. 石油与天然气地质, 2022, 43(2): 407-418.