川东地区大安寨段岩石类型及其组合特征的勘探意义
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摘要
四川盆地下侏罗统自流井组大安寨段一直是四川盆地致密油勘探的重要层位之一,近年的勘探成果显示出了大安寨段具有良好的潜力与前景。川东地区具有和川中地区相似的资源和成藏有利区,但多年来未受到足够的重视。通过对川东地区26条大安寨段野外露头资料整理以及结合前人的认识,总结了川东地区大安寨段的岩石类型及其组合特征,按照生屑的含量、填隙物特征及对岩石物性影响较大的重结晶作用,将灰岩类和泥(页)岩类分为生屑灰岩、泥晶灰岩、结晶灰岩、介壳质泥(页)岩和钙质泥(页)岩5类,再进一步将生屑灰岩和泥晶灰岩类细分为7个亚类;综合"源、带、相"的勘探思路,分析了4种主要岩性组合对寻找致密油"甜点"的影响,对下步川东大安寨段致密油(气)的勘探具有重要意义。
The Da'anzhai member of the Ziliujing Formation in Lower Jurassic in the Sichuan Basin has been one of the important strata of the tight oil exploration in the Sichuan Basin. In recent years,the exploration results show that Da'anzhai has good potential and prospects. The eastern Sichuan Basin has similar resources and reservoirs in the middle Sichuan Basin,but has not received enough attention for many years. Based on the data of 26 outcrops in Da'anzhai member of eastern Sichuan Basin and the combination of previous understanding,the rock types and their association characteristics of Da'anzhai member in eastern Sichuan region are summarized. According to the content of biological debris,the characteristics of interstitial fillings and the recrystallization,the limestone and mudstone( shale) are divided into biological debris limestone,micritic limestone,crystalline limestone,shell mudstone( shale) and calcareous mudstone( shale). And further subdivided the biological debris limestone and micritic limestone into seven subclasses. Based on the exploration of "source,zone and facies",the influence of four major lithological association on the discovery of tight oil "sweet zone"is analyzed,which is of great significance to the exploration of tight oil( gas) in Da'anzhai member in eastern Sichuan Basin.
The Da'anzhai member of the Ziliujing Formation in Lower Jurassic in the Sichuan Basin has been one of the important strata of the tight oil exploration in the Sichuan Basin. In recent years,the exploration results show that Da'anzhai has good potential and prospects. The eastern Sichuan Basin has similar resources and reservoirs in the middle Sichuan Basin,but has not received enough attention for many years. Based on the data of 26 outcrops in Da'anzhai member of eastern Sichuan Basin and the combination of previous understanding,the rock types and their association characteristics of Da'anzhai member in eastern Sichuan region are summarized. According to the content of biological debris,the characteristics of interstitial fillings and the recrystallization,the limestone and mudstone( shale) are divided into biological debris limestone,micritic limestone,crystalline limestone,shell mudstone( shale) and calcareous mudstone( shale). And further subdivided the biological debris limestone and micritic limestone into seven subclasses. Based on the exploration of "source,zone and facies",the influence of four major lithological association on the discovery of tight oil "sweet zone"is analyzed,which is of great significance to the exploration of tight oil( gas) in Da'anzhai member in eastern Sichuan Basin.
引文
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7陈世加,张焕旭,路俊刚,等.四川盆地中部侏罗系大安寨段致密油富集高产控制因素.石油勘探与开发,2015;42(2):186-193Chen Shijia,Zhang Huanxu,Lu Jungang,et al.Control factors of tight oil accumulation and high yield in the Jurassic section of Jurassic in the middle part of Sichuan Basin.Petroleum Exploration and Development,2015;42(2):186-193
8邹才能,陶士振,薛叔浩.“相控论”的内涵及其勘探意义.石油勘探与开发,2005;32(6):7-12Zou Caineng,Tao Shizhen,Xue Shuhao.Connotation of“facies control theory”and its significance for exploration.Petroleum Exploration and Development.2005;32(6):7-12
9张斌,胡健,杨家静,等.烃源岩对致密油分布的控制作用---以四川盆地大安寨为例.矿物岩石地球化学通报,2015;34(1):45-54Zhang Bin,Hu Jian,Yang Jiajing,et al.Controlling effect of source rocks on the occurrence of tight oil-taking the Da’anzhai reservior o Sichuan Basin as an example.Bulletin of Mineralogy,Petrology and Geochemistry,2015;34(1):45-54
10焦淑静,张慧,薛东川,等.泥页岩孔隙类型、形态特征及成因研究.电子显微学报,2015;34(5):421-427Jiao Shujing,Zhang Hui,Xue Dongchuan,et al.Study on morphological characteristics of micropores and microcracks in shale.Journal of Chinese Electron Microscopy Society,2015;34(5):421-427
2郑荣才,郭春利,梁西文,等.四川盆地大安寨段非常规储层的储集空间类型与评价.岩性油气藏,2016;28(1):16-29Zheng Rongcai,Guo Chunli,Liang Xiwen,et al.Types and evaluation of reservoir space for unconventional reservoirs in Da’anzhai section of Sichuan Basin.Lithologic Reservoirs,2016;28(1):16-29
3施开兰,陈芳文,段卓,等.重庆北碚和平水库剖面下侏罗统大安寨段湖相碳酸盐岩岩石类型及沉积环境.古地理学报,2015;17(2):198-212Shi Kailan,Chen Fangwen,Duan Zhuo,et al.Lacustrine carbonate rocks and sedimentary environments in the Lower Jurassic giant Da’an section,Heping Reservoir,Chongqing,Beibei.Journal of Palaeogeography,2015;17(2):198-212
4卢炳雄,郑荣才,梁西文,等.川东地区侏罗系自流井组大安寨段页岩气(油)储层评价.石油与天然气地质,2015;36(3):488-496Lu Bingxiong,Zheng Rongcai,Liang Xiwen,et al.Jurassic Ziliujing group Da’anzhai shale gas(oil)in East Sichuan reservoir evaluation.Oil and Gas Geology,2015;36(3):488-496
5黄棋棽,林良彪,赵军寿,等.川东北下侏罗统大安寨段沉积与储层特征.科学技术与工程,2015;15(5):17-23Huang Qishen,Lin Liangbiao,Zhao Junshou,et al.Sedimentary and reservoir characteristics of the Lower Jurassic large margin of northeastern Sichuan.Science Technology and Engineering,2015;15(5):17-23
6冯荣昌,吴因业,陶士振,等.四川盆地下侏罗统大安寨段沉积微相特征及对储层的控制.石油实验地质,2015;37(3):320-327Feng Rongchang,Wu Yinye,Tao Shizhen,et al.Sedimentary microfacies and control of reservoir rocks in the Lower Jurassic,Da’an Formation,Sichuan Basin.Petroleum Experimental Geology.2015;37(3):320-327
7陈世加,张焕旭,路俊刚,等.四川盆地中部侏罗系大安寨段致密油富集高产控制因素.石油勘探与开发,2015;42(2):186-193Chen Shijia,Zhang Huanxu,Lu Jungang,et al.Control factors of tight oil accumulation and high yield in the Jurassic section of Jurassic in the middle part of Sichuan Basin.Petroleum Exploration and Development,2015;42(2):186-193
8邹才能,陶士振,薛叔浩.“相控论”的内涵及其勘探意义.石油勘探与开发,2005;32(6):7-12Zou Caineng,Tao Shizhen,Xue Shuhao.Connotation of“facies control theory”and its significance for exploration.Petroleum Exploration and Development.2005;32(6):7-12
9张斌,胡健,杨家静,等.烃源岩对致密油分布的控制作用---以四川盆地大安寨为例.矿物岩石地球化学通报,2015;34(1):45-54Zhang Bin,Hu Jian,Yang Jiajing,et al.Controlling effect of source rocks on the occurrence of tight oil-taking the Da’anzhai reservior o Sichuan Basin as an example.Bulletin of Mineralogy,Petrology and Geochemistry,2015;34(1):45-54
10焦淑静,张慧,薛东川,等.泥页岩孔隙类型、形态特征及成因研究.电子显微学报,2015;34(5):421-427Jiao Shujing,Zhang Hui,Xue Dongchuan,et al.Study on morphological characteristics of micropores and microcracks in shale.Journal of Chinese Electron Microscopy Society,2015;34(5):421-427