摘要
目的研究欧利坨子地区沙三段火山岩岩性与岩相,确定砂砾岩的沉积相模式,探讨二者之间的接触关系。方法岩心观察、岩石化学分析、测井识别、粒度分析。结果该地区火山岩岩性复杂,以爆发相的粗面岩类和溢流相的玄武岩类为主,厚层砂砾岩为深水环境下的浊流沉积,浊积岩与火山岩二者之间属于互补沉积的接触关系。结论粗面岩岩性的测井识别与浊积岩的判定指导了油藏评价工作的方向,在实践应用中得到验证且取得显著成果。
Aim To research the magmatic rock＇s lithology and lithofacies, identify turbidite＇s facies model and disscus osculate relation between magmatic rock and turbidite of Shasan member in Oulituozi district. Methods Recognizing the lithology of magmatic rock by using core observing, lithology chemical analyse, logging and researching sandstone＇s character by using grain size analysis graph of relation. Results The magmatic rock＇s lithology is complex, magmatic rock is composed of trachyte which is of explosion lithofacies and basalt which is of overflow lithofacies,thickness sandstone＇s sedimentary environment is turbidity fan under deep water,complementary depositional pattern between sandstone and magmatic rock has been set forth. Conclusion Recognising of trachyte by logging and identification of turbidity are the guidance of reservoir evaluation, and it has been proven in experience and gotten a remarkable effect.
出处
《西北大学学报（自然科学版）》
CAS
CSCD
北大核心
2008年第2期285-289,共5页
Journal of Northwest University（Natural Science Edition）
基金
国家重大基础研究发展规划基金资助项目(2005CB422100)
关键词
沙三段
浊流
粗面岩
爆发相
溢流相
Shasan Member
turbidity current
trachyte
exploration facies
overflow facies
