四川盆地龙岗地区中三叠统雷四~3亚段储层特征及控制因素
发布时间：2018-07-25 11:04
【摘要】：对川东北龙岗地区中三叠统雷口坡组雷四3亚段储层的研究,有助于认识受雷口坡组顶部不整合面风化壳影响的储层特征,并可通过对比,分析该区域不整合面对四川盆地雷口坡组顶部储层的影响范围与程度。根据岩心观察与描述、薄片鉴定、阴极发光实验、锶同位素测试、碳氧同位素测试,结合测井与储层物性等资料,本文论述了川东北龙岗地区雷四3亚段储层特征及控制因素;同时,简要探讨了四川盆地其他地区雷四3亚段的储层特征及控制因素。结果表明,川东北龙岗地区雷四3亚段储层的岩性主要为膏溶角砾状白云岩与颗粒白云岩,储层物性总体较差,储集空间主要为膏溶铸模孔、颗粒间(内)溶孔及晶间(溶)孔,储层控制因素主要为局限-蒸发台地相和台地内局部微地貌高地颗粒岩的沉积作用、印支期构造运动抬升后的表生岩溶作用与充填作用。在紧邻龙岗的元坝地区,雷四段储层具有与龙岗地区相似的特征与控制因素;在川西坳陷中段与川西南地区,雷四段顶部印支期不整合面岩溶作用减弱,储层分别受控于台地边缘微生物礁滩相与海平面升降控制的颗粒滩相沉积作用。
[Abstract]:The study on the reservoir of the Leikoupo formation in the middle Triassic of Longgang area in northeastern Sichuan is helpful to understand the reservoir characteristics affected by the weathering crust at the top of the Leikoupo formation, and can be compared with each other. The influence range and extent of the regional unconformity on the top reservoir of the Leikoupo formation in Sichuan Basin are analyzed. On the basis of core observation and description, sheet identification, cathodoluminescence experiment, strontium isotope test, carbon and oxygen isotope test, well logging and reservoir physical properties, this paper discusses the reservoir characteristics and controlling factors of submember 3 of Lei 4 in Longgang area, northeast Sichuan. At the same time, the reservoir characteristics and controlling factors of Lei 4 3 in other areas of Sichuan Basin are briefly discussed. The results show that the lithology of the Lai4 3 submember reservoir in Longgang area, northeast Sichuan Province, is mainly composed of gypsum breccia dolomite and granular dolomite, and the reservoir physical properties are generally poor, and the reservoir space is mainly gypsum cast mold pore. The main controlling factors of intergranular and intergranular pores are the deposition of confined evaporative platform facies and local microgeomorphologic highland granulites in the platform, and the supergene karstification and filling after the uplift of the Indosinian tectonic movement. In the Yuanba area, adjacent to Longgang, the reservoir of the fourth member of Lei has similar characteristics and controlling factors as that of the area of Longgang, while in the middle section of the western Sichuan depression and southwest of Sichuan, the karstification of the Indosinian unconformity surface at the top of the fourth member of the Lei fourth member weakens. The reservoir is controlled by microorganism reef facies and granular beach facies controlled by sea level rise and fall respectively.
【学位授予单位】：成都理工大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：P618.13
[Abstract]:The study on the reservoir of the Leikoupo formation in the middle Triassic of Longgang area in northeastern Sichuan is helpful to understand the reservoir characteristics affected by the weathering crust at the top of the Leikoupo formation, and can be compared with each other. The influence range and extent of the regional unconformity on the top reservoir of the Leikoupo formation in Sichuan Basin are analyzed. On the basis of core observation and description, sheet identification, cathodoluminescence experiment, strontium isotope test, carbon and oxygen isotope test, well logging and reservoir physical properties, this paper discusses the reservoir characteristics and controlling factors of submember 3 of Lei 4 in Longgang area, northeast Sichuan. At the same time, the reservoir characteristics and controlling factors of Lei 4 3 in other areas of Sichuan Basin are briefly discussed. The results show that the lithology of the Lai4 3 submember reservoir in Longgang area, northeast Sichuan Province, is mainly composed of gypsum breccia dolomite and granular dolomite, and the reservoir physical properties are generally poor, and the reservoir space is mainly gypsum cast mold pore. The main controlling factors of intergranular and intergranular pores are the deposition of confined evaporative platform facies and local microgeomorphologic highland granulites in the platform, and the supergene karstification and filling after the uplift of the Indosinian tectonic movement. In the Yuanba area, adjacent to Longgang, the reservoir of the fourth member of Lei has similar characteristics and controlling factors as that of the area of Longgang, while in the middle section of the western Sichuan depression and southwest of Sichuan, the karstification of the Indosinian unconformity surface at the top of the fourth member of the Lei fourth member weakens. The reservoir is controlled by microorganism reef facies and granular beach facies controlled by sea level rise and fall respectively.
【学位授予单位】：成都理工大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：P618.13
【参考文献】
相关期刊论文 前10条
1 龙翼;刘树根;宋金民;孙玮;林彤;余永强;;龙岗地区中三叠统雷四~3亚段储层特征及控制因素[J];岩性油气藏;2016年06期
2 杨克明;;四川盆地西部中三叠统雷口坡组烃源岩生烃潜力分析[J];石油实验地质;2016年03期
3 李书兵;许国明;宋晓波;;川西龙门山前构造带彭州雷口坡组大型气田的形成条件[J];中国石油勘探;2016年03期
4 谢刚平;;川西坳陷中三叠统雷口坡组四段气藏气源分析[J];石油实验地质;2015年04期
5 甯o，
本文编号：2143630
本文链接：https://www.wllwen.com/kejilunwen/diqiudizhi/2143630.html
