【摘要】 大洼油田火山岩主要分布于新生界房身泡组和中生界,呈层状分布,岩性主要为玄武岩、安山岩、火山角砾岩和凝灰岩,其中火山角砾岩是中生界的主要储层。通过火山岩的测井识别及火山岩连井对比,将中生界火山岩划分为喷溢相、空落堆积相、火山沉积过渡相和火山沉积相,并查明了火山岩岩相的平面展布特征,为大洼油田火山岩储层研究提供了基础资料。更多还原

【Abstract】 Volcanites in Dawa Oilfield are distributed in Fangshenpao Formation and Mesozoic group with laminar distribution, lithology is mainly consisted of basalts, andesites, volcanic breccia and tuffs, of which volcanic breccia is a key reservoir of Mesozoic group. Through vulcanite well logging recognition and its well tie correlation, the Mesozoic volcanites are divided into pouring out facies, empty accumulative facies, volcanic sedimentasy-transition facies and volcanic sedimentary facies. Plane distributional properties of volcanic lithofacies are found out, thus basic data are provided for studying the volcanic reservoir in Dawa Oilfield.更多还原