镇原油田218井区长81油层沉积微相研究
Journal of Yangtze University(Natural Science Edition)(2017)
Abstract
结合区域沉积背景、岩心观察和测井相分析等资料,建立研究区测井曲线图版,结合识别相标志,合理划分沉积微相,总结展布规律.结果表明,218井区长81油层岩石多为陆源碎屑岩,表现为水下还原环境沉积;沉积相主要为三角洲前缘亚相,可进一步细分为水下分流河道、河口砂坝、水下分流间湾、远砂坝等沉积微相类型;水下分流河道为区内骨架砂体,呈南西-北东方向条带状展布.
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