四川盆地加里东期剥蚀量恢复
|
摘要
四川盆地是一个多旋回叠合盆地,加里东期剥蚀量是下古生界烃源岩热演化、早期油气藏的形成与演化以及下组合资源量计算等研究中不可缺少的基础参数。考虑到剥蚀量恢复方法固有的局限性和适用条件以及四川盆地早古生代时期的沉积构造演化特征,本文在分析了四川盆地志留系的原始沉积范围和下古生界残留地层分布格局的基础上,提出了"沉积速率比值+古热流反演+古地质图"法恢复四川盆地加里东期的剥蚀量。志留系原始范围广,覆盖了整个四川盆地,现今川中和川西地区志留系缺失是加里东期剥蚀所致,而不是当时没有沉积。利用钻至下古生界的29口探井的分层数据和130口虚拟井的地震数据,恢复了四川盆地加里东期的剥蚀量,并与古地质图结合,约束了剥蚀量的平面变化趋势。四川盆地加里东期剥蚀量主要受川中古隆起控制,古隆起区剥蚀量为700~1 200 m,川东和川南地区的剥蚀量一般为100~200 m,川北地区的剥蚀量为200~500 m。
Sichuan Basin is a multi-cycle superimposed basin.Caledonian denudation plays a key role in the Lower Paleozoic source rock maturation and early reservoir formation and evolution.Considering the inherent limitation of the existing methods of erosion thickness reconstruction and the characteristics of the tectono-sedimentary evolution in the Sichuan Basin we proposed a method of "deposit rate ratio+paleo-heat flow inversion+ancient geological map" to recover the Caledonian erosion thickness based on the analysis of depositional range-of the Silurian system and the Lower Paleozoic residual formation distribution pattern.The original Silurian system covered the whole area of the Sichuan Basin.The absence of the Silurian system in the central and western Sichuan Basin is a result of the Caledonian erosion.Using the stratum data of 29wells drilled the Lower Paleozoic sequences and seismic data from 130 virtual wells,the Caledonian erosion thickness is reconstructed.Combined the erosion thickness data from the boreholes with the ancient geological map,the distribution trend in the spatial is constrained.The results show that Caledonian denudation is mainly affected by the central Sichuan ancient uplift with erosion thickness about 700 ~ 1 200 m.In the southern and eastern Sichuan Basin,the erosion thickness is generally about 100-200 m.In approximately,200-500 m deposits were removed away in the northern Sichuan Basin in the Caledonian tectonic movement.
Sichuan Basin is a multi-cycle superimposed basin.Caledonian denudation plays a key role in the Lower Paleozoic source rock maturation and early reservoir formation and evolution.Considering the inherent limitation of the existing methods of erosion thickness reconstruction and the characteristics of the tectono-sedimentary evolution in the Sichuan Basin we proposed a method of "deposit rate ratio+paleo-heat flow inversion+ancient geological map" to recover the Caledonian erosion thickness based on the analysis of depositional range-of the Silurian system and the Lower Paleozoic residual formation distribution pattern.The original Silurian system covered the whole area of the Sichuan Basin.The absence of the Silurian system in the central and western Sichuan Basin is a result of the Caledonian erosion.Using the stratum data of 29wells drilled the Lower Paleozoic sequences and seismic data from 130 virtual wells,the Caledonian erosion thickness is reconstructed.Combined the erosion thickness data from the boreholes with the ancient geological map,the distribution trend in the spatial is constrained.The results show that Caledonian denudation is mainly affected by the central Sichuan ancient uplift with erosion thickness about 700 ~ 1 200 m.In the southern and eastern Sichuan Basin,the erosion thickness is generally about 100-200 m.In approximately,200-500 m deposits were removed away in the northern Sichuan Basin in the Caledonian tectonic movement.
引文
曾道富.1988.关于恢复四川盆地各地质时期地层剥蚀量的初探.石油实验地质,10(2):134-141.Zeng Daofu.1988.A priliminary study on the restoration for the various denuded sequences of Sichuan Basin.Petroleum Geology&Experiment,10(2):134-141.
邓宾,刘树根,刘顺等.2009.四川盆地地表剥蚀量恢复及其意义.成都理工大学学报(自然科学版),36(6):675-686.Deng Bin,Liu Shugen,Liu Shun et al.2009.Restoration of exhumation thickness and its significance in Sichuan Basin,China.Journal of Chengdu University of Technology(Science&Technology Edition),36(6):675-686.
胡圣标,张容燕,周礼成.1998.油气盆地热史恢复方法.勘探家,3(4):52-54.Hu Shengbiao,Zhang Rongyan and Zhou Licheng.1998.Methods of thermal history reconstruction for oil-gas basin.Explorationist,3(4):52-54,
梁全胜,刘震,何小胡等.2009.根据地震资料恢复勘探新区地层剥蚀量.新疆石油地质,30(1):103-105.Liang Quansheng,Liu Zhen,He Xiaohu et al.2009.Study of stratigraphic denudation recovery by seismic data in new exploration area.Xinjiang Petroleum Geology,30(1):103-105.
卢庆治,马永生,郭彤楼等.2007.鄂西—渝东地区热史恢复及烃源岩成烃史.地质科学,42(1):189-198.Lu Qingzhi,Ma Yongsheng,Guo Tonglou et al.2007.Thermal history and hydrocarbon generation history in western Hubeieastern Chongqing area.Chinese Journal of Geology,42(1):189-198.
牟中海,陆廷清,谢桂生等.2001.塔西南地区二叠系剥蚀厚度恢复.天然气工业,21(2):41-43.Mu Zhonghai,Lu Tingqing,Xie Guisheng et al.2001.Restoration of the denuded thickness of Permian in the southwest part of Tarim Basin.Natural Gas Industry,21(2):41-43.
谭开俊,牟中海.2004.塔西南地区上寒武统—奥陶系剥蚀厚度恢复.河南石油,18(3):4-6.Tan Kaijun and Mu Zhonghai.2004.Restoration of erosion thickness of Upper Cambrian-Ordovician in southwest area of Tarim Basin.Henan Petroleum,18(3):4-6.
王敏芳,李平平.2007.地质学方法估算准噶尔盆地西山窑组剥蚀厚度.地球科学与环境学报,29(1):30-33.Wang Minfang and Li Pingping.2007.Geological estimation of denuded strata comeback of Xishanyao Formation in Junggar Basin.Journal of Earth Sciences and Environment,29(1):30-33.
魏魁生,徐怀大,叶淑芬.1997.四川盆地层序地层特征.石油与天然气地质,18(2):151-157.Wei Kuisheng,Xu Huida and Ye Shufen.1997.Sequence stratigraphic characteristics of Sichuan Basin.Oil&Gas Geology,18(2):151-157.
杨家静.2002.四川盆地乐山—龙女寺古隆起震旦系油气藏形成演化研究(博士学位论文).成都:西南石油学院.1-110.Yang Jiajing.2002.Study on Formation and Evolution of Sinian Petroleum Pools in Leshan-Longnusi Paleo-uplift,Sichuan Basin(Ph D Thesis).Chengdu:Southwest Petroleum College.1-110.
杨欣,李双应.2011.定量恢复大别造山带侏罗—白垩纪的隆升和剥蚀.地质科学,46(2):308-321.Yang Xin and Li Shuangying.2011.Quantitative method for reconstructing the Dabie orogenic's uplifting and erosion history during the Jurassic-Cretaceous.Chinese Journal of Geology,46(2):308-321.
袁玉松,郑和荣,涂伟.2008.沉积盆地剥蚀量恢复方法.石油实验地质,30(6):636-642.Yuan Yusong,Zheng Herong and Tu Wei.2008.Methods of eroded strata thickness restoration in sedimentary basins.Petroleum Geology&Experiment,30(6):636-642.
张林,魏国齐,郭英海等.2005.四川盆地志留系层序地层及有利储集层分布.天然气工业,25(5):6-8.Zhang Lin,Wei Guoqi,Guo Yinghai et al.2005.Silurian sequence stratigraphy and favorable reservoir distribution in Sichuan Basin.Natural Gas Industry,25(5):6-8.
朱传庆,徐明,单竞男等.2009.利用古温标恢复四川盆地主要构造运动时期的剥蚀量.中国地质,26(6):1268-1277.Zhu Chuanqing,Xu Ming,Shan Jingnan et al.2009.Quantifying the denudations of major tectonic events in Sichuan Basin;Constrained by the paleothermal records.Geology in China,36(6):1268-1277.
邓宾,刘树根,刘顺等.2009.四川盆地地表剥蚀量恢复及其意义.成都理工大学学报(自然科学版),36(6):675-686.Deng Bin,Liu Shugen,Liu Shun et al.2009.Restoration of exhumation thickness and its significance in Sichuan Basin,China.Journal of Chengdu University of Technology(Science&Technology Edition),36(6):675-686.
胡圣标,张容燕,周礼成.1998.油气盆地热史恢复方法.勘探家,3(4):52-54.Hu Shengbiao,Zhang Rongyan and Zhou Licheng.1998.Methods of thermal history reconstruction for oil-gas basin.Explorationist,3(4):52-54,
梁全胜,刘震,何小胡等.2009.根据地震资料恢复勘探新区地层剥蚀量.新疆石油地质,30(1):103-105.Liang Quansheng,Liu Zhen,He Xiaohu et al.2009.Study of stratigraphic denudation recovery by seismic data in new exploration area.Xinjiang Petroleum Geology,30(1):103-105.
卢庆治,马永生,郭彤楼等.2007.鄂西—渝东地区热史恢复及烃源岩成烃史.地质科学,42(1):189-198.Lu Qingzhi,Ma Yongsheng,Guo Tonglou et al.2007.Thermal history and hydrocarbon generation history in western Hubeieastern Chongqing area.Chinese Journal of Geology,42(1):189-198.
牟中海,陆廷清,谢桂生等.2001.塔西南地区二叠系剥蚀厚度恢复.天然气工业,21(2):41-43.Mu Zhonghai,Lu Tingqing,Xie Guisheng et al.2001.Restoration of the denuded thickness of Permian in the southwest part of Tarim Basin.Natural Gas Industry,21(2):41-43.
谭开俊,牟中海.2004.塔西南地区上寒武统—奥陶系剥蚀厚度恢复.河南石油,18(3):4-6.Tan Kaijun and Mu Zhonghai.2004.Restoration of erosion thickness of Upper Cambrian-Ordovician in southwest area of Tarim Basin.Henan Petroleum,18(3):4-6.
王敏芳,李平平.2007.地质学方法估算准噶尔盆地西山窑组剥蚀厚度.地球科学与环境学报,29(1):30-33.Wang Minfang and Li Pingping.2007.Geological estimation of denuded strata comeback of Xishanyao Formation in Junggar Basin.Journal of Earth Sciences and Environment,29(1):30-33.
魏魁生,徐怀大,叶淑芬.1997.四川盆地层序地层特征.石油与天然气地质,18(2):151-157.Wei Kuisheng,Xu Huida and Ye Shufen.1997.Sequence stratigraphic characteristics of Sichuan Basin.Oil&Gas Geology,18(2):151-157.
杨家静.2002.四川盆地乐山—龙女寺古隆起震旦系油气藏形成演化研究(博士学位论文).成都:西南石油学院.1-110.Yang Jiajing.2002.Study on Formation and Evolution of Sinian Petroleum Pools in Leshan-Longnusi Paleo-uplift,Sichuan Basin(Ph D Thesis).Chengdu:Southwest Petroleum College.1-110.
杨欣,李双应.2011.定量恢复大别造山带侏罗—白垩纪的隆升和剥蚀.地质科学,46(2):308-321.Yang Xin and Li Shuangying.2011.Quantitative method for reconstructing the Dabie orogenic's uplifting and erosion history during the Jurassic-Cretaceous.Chinese Journal of Geology,46(2):308-321.
袁玉松,郑和荣,涂伟.2008.沉积盆地剥蚀量恢复方法.石油实验地质,30(6):636-642.Yuan Yusong,Zheng Herong and Tu Wei.2008.Methods of eroded strata thickness restoration in sedimentary basins.Petroleum Geology&Experiment,30(6):636-642.
张林,魏国齐,郭英海等.2005.四川盆地志留系层序地层及有利储集层分布.天然气工业,25(5):6-8.Zhang Lin,Wei Guoqi,Guo Yinghai et al.2005.Silurian sequence stratigraphy and favorable reservoir distribution in Sichuan Basin.Natural Gas Industry,25(5):6-8.
朱传庆,徐明,单竞男等.2009.利用古温标恢复四川盆地主要构造运动时期的剥蚀量.中国地质,26(6):1268-1277.Zhu Chuanqing,Xu Ming,Shan Jingnan et al.2009.Quantifying the denudations of major tectonic events in Sichuan Basin;Constrained by the paleothermal records.Geology in China,36(6):1268-1277.
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