摘要
准噶尔盆地西北缘五八区乌尔禾组是有利的石油勘探区带。在充分认识准噶尔盆地西北缘扇体沉积模式及沉积特征的基础上,岩心观察,薄片鉴定及测井资料分析结果表明:乌尔禾组沉积环境由冲积扇、水下扇和扇三角洲组成。将乌尔禾组冲积扇划分为扇根、扇中与扇缘3类亚相和9类微相,五八区乌尔禾组扇三角洲发育了扇三角洲平原和扇三角洲前缘,并细分为5类微相,详细阐述了各沉积微相的特征,并在盆地西北缘构造背景下分析了构造运动对研究区沉积相发育的控制作用。
Wu'erher Formation is the favorable exploration zones in the Northwestern Margin of Junggar Basin.In this paper,by means of the core observation,identification of thin sections,the comprehensive analysis of data of well logging and logging,we studied the sedimentary facies. The result shows that the Wu 'erher Formation sedimentary environment is composed of alluvial fan,subaqueous fan and fan delta. Alluvial fan can be divided into three subfacies of top,middle and edge fan and 9 microfacies. Fan delta can be divided into two subfacies of fan delta plain,fan delta front and 5 microfacies. There is no fan prodelta in study area. At last,this paper discusses that tectonic movement control sedimentary facies in the studied area under the background of structure in the northwest edge Junggar basin.
出处
《新疆石油天然气》
CAS
2014年第3期1-8,共8页
Xinjiang Oil & Gas
关键词
沉积相
乌尔禾组
五八区
准噶尔盆地
Sedimentary facies
Wu'erher Formation
Wuba Area
Junggar Basin
