松辽盆地北部姚一段三角洲的沉积特征ON THE DEPOSITIONAL FEATURES IN THE DELTA OF MEMBER 1 OF YAOJIA FORMATION IN THE NORTHERN PART OF SONGLAO BASIN
蔺毓秀
Lin Yuxiu(The Oil and Gas Reservoir Comprehensive Research Department ofthe Scientific Research and Design Institute of Daqing Oil Field);
摘要(Abstract):
本文通过分析姚一段北安-杏树岗三角洲,提出湖进三角洲的概念,其沉积层序为三层结构的正旋回组合,在湖进过程中,三角洲体随湖岸线向陆地方向迁移,层位由老变新。湖进三角洲的骨架砂体呈指状展布,砂体的分布模式是:河口堆积砂体——水下分流河道条带砂体——分流间透镜砂体——席状砂体,而主骨架砂体是分流条带砂体。
Abstract
By analyzing the delta of Beian-Xingshugang formed in member 1 of Yaojia formation, the concept of lacustrine progressive delta, in which its depositional sequence was positive cycle combination with three layers structure, is proposed. During the progress of the lake, the body of the delta was shifted landward with the lake shoreline, and the horizons were changed from old to new. The matrix sandbodies in the lacustrine progressive delta arc distributed as fingers. The distributive
model of the sandbodies is river mouth accumulational sandbody-subaqueous
distributary channel elongated sandbody-intcrdistributary lenticular
sandbody-sheet sandbody. But the main matrix sandbody is distributary
elongated sandbody.
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基金项目(Foundation):
作者(Authors):
蔺毓秀
Lin Yuxiu(The Oil and Gas Reservoir Comprehensive Research Department ofthe Scientific Research and Design Institute of Daqing Oil Field);
DOI: 10.19597/j.issn.1000-3754.1983.02.004