摘要
沉积体系的发育受控于盆地外围物源位置和沉积物运移通道等因素,物源特征可以借助重矿物的信息加以描述。重视沉积体系研究与重矿物物源研究有助于远景区的油气勘探预测。黄骅坳陷南堡凹陷高柳地区Es33(Ⅱ+Ⅲ)段发育3个大型的扇三角洲沉积体系和2个大型的三角洲间湾相带。重矿物分布主要集中于扇三角洲前缘,与主力油层段含油范围恰好吻合。根据对其陆源重矿物的分布统计和聚类及因子分析,控制拾场缓坡型扇三角洲发育的物源仅有1个,位于高尚堡北部,其主要母岩为中深变质岩类,次要母岩为中浅变质岩类;控制高西南扇三角洲发育的物源也仅有1个,位于高尚堡西南部,其主要母岩为中深变质岩类,次要母岩为中浅变质岩类;控制柳赞陡坡型扇三角洲发育的物源有2个,主要物源在东南部,母岩类型为中浅变质岩类,次要物源在东北部,母岩类型为中深变质岩类。图4表1参4(梁大新摘)
There are three fan delta sedimentary systems and two distributional bays in Es 3 3 (Ⅱ+Ⅲ) Member of Gaoshangpu Liuzan area in Nanpu sag. The space positions of sedimentary systems are determined by the positions of mass sources around basin and the channel ways through which sediment migrated and other factors. The features of mass sources can be revealed by the statistics information from heavy minerals. Because of controlling of sedimentary system, heavy minerals mostly distribute in the front of the fan shaped delta, where is the distribution space of oil bearing block in main oil reservoir member. The only mass source which controlled Shichang gentle slope type of fan delta is in north of Gaoshangpu and its main mother rock is meso hypometamorphic rock, and second mother rock is meso epimetamorphic rock. There are two mass sources which controlled Liuzan sharp slope type of fan delta, one, main, in east south of the depression, the other, second, in the east north of the depression, and former is meso epimetamorphic rock, latter meso hypometamorphic rock.
出处
《石油勘探与开发》
SCIE
EI
CAS
CSCD
北大核心
1998年第6期5-7,共3页
Petroleum Exploration and Development
关键词
油气聚集
测井曲线
岩心分析
重矿物源
Heavy mineral, Distribution, Source area, Sedimentary system, Mother rock type, Bohai gulf basin , Huanghua depression, Nanpu seg