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Sedimentary model for the lower part of the third member of the Hetaoyuan Formation in the Anpeng district, Zhaoao oil field, Henan
Author(s): HOU Guowei, YIN Taiju, FAN Zhonghai, ZHANG Changmin, WANG Zhenqi, ZHANG Shangfeng, WANG Guopeng
Pages: 47-
53
Year: 2001
Issue:
4
Journal: SEDIMENTARY GEOLOGY AND TETHYAN GEOLOGY
Keyword: 核桃园组; 沉积相; 扇三角洲; 沉积模式; 赵凹油田;
Abstract: 在对赵凹油田安棚深层系核(核桃园组)三下段砂体的研究中,从岩性特征、结构和成分成熟度,沉积构造及古生物特征等方面总经了该区沉积的相标志,结合研究区的沉积背景,笔者认为该区沉积环境为扇三角洲相,并进一步划分了亚相和微相,提出了研究区扇三角洲相的沉积模式,并对扇三角洲砂体的类型进行了研究.该区发育扇三角洲前缘亚相和前扇三角洲两种亚相,近岸水道和远岸水道微相比较发育;距离物源较近,沉积物搬运距离短,沉积物粒度较粗,结构成熟度和成分成熟度较低,水动力较强,在砾岩和粗砂岩中发育有块状层理、平行层理和交错层理;砂体类型对储集层物性有明显的控制作用.
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