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Analysis on Sedimentary Characteristics of Dalinghe Reservoir in Huan 2-14-16 Block, Liaohe Depression
Author(s): WEI Yuning, HE Ping, WANG Qingchun
Pages: 19-
22,60
Year: 2009
Issue:
1
Journal: Resources Environment & Engineering
Keyword: 大凌河油层; 湖底扇; 沉积相;
Abstract: 大凌河油层是辽河坳陷欢2-14-16区块的主力含油层系之一.研究表明,大凌河油层是裂谷深陷期深水环境条件下形成的一套浊流沉积物,沉积物具有多期性和突变性,主要岩性以中-细砾岩和岩屑质混合砂岩为主,次为含砾砂岩,砂体在平面上受水道控制明显,呈北西向的条带状展布.根据古地理和古构造条件,以及岩石成分、结构、构造、砂体发育及分布特征,认为辽河坳陷欢2-14-16区块大凌河油层的沉积环境主要是具供给水道的缓坡型湖底扇中扇亚相,由辫状沟道、辫状沟道间、中扇前缘微相组成.
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