录井工程 ›› 2024, Vol. 35 ›› Issue (1): 106-111.doi: 10.3969/j.issn.1672-9803.2024.01.017
陈启南①,②, 程俊生①,②, 冯国良①,②, 杨德强①,②, 刘畅①,②
CHEN Qi′nan①,②, CHENG Junsheng①,②, FENG Guoliang①,②, YANG Deqiang①,②, LIU Chang①,②
摘要： 辽河坳陷东部凹陷大湾区块陡坡带沙三中亚段沉积时期发育了一套砂砾岩体,由于该区勘探程度较低,前人尚未对该区砂砾岩体进行深入的分析和研究,对其成因及分布规律认识不清,制约了该区的勘探进程。利用岩心观察、岩石薄片、粒度分析、重矿物组合特征以及古地貌恢复等技术手段,对研究区砂砾岩体沉积特征、物源及成因进行研究,结果表明：大湾区块陡坡带沙三中亚段砂砾岩体为近岸水下扇沉积体系,物源来自于东部茨榆坨潜山凸起,同时大湾区块位于茨榆坨潜山凸起倾没端,是主物源的优势倾泻方向,有利于形成规模扇体。在此基础上明确了大湾区块陡坡带沙三中亚段砂砾岩体展布特征,从而为大湾区块陡坡带岩性油气藏勘探寻找有利目标提供了指导。
中图分类号:
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