阿尔金地区高精度层序解释与砂体预测
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摘要
将高精度层序解释结果和地震储集层预测技术相结合,在体系域框架下按准层序进行地震属性的储集层预测成图,预测出阿尔金地区的深湖湖底扇沟道浊积砂体有利分布区。湖底扇中扇辫状沟道浊积岩以灰色、灰绿色具粒序砂砾岩、砾状砂岩为主,与半深湖-深湖亚相泥岩伴生。根据预测的砂体,结合构造和生油条件,可以确定勘探岩性油气藏的有利目标。
Combined with refined analysis result of sequence, the seismic prediction technique on reservoir can lead to good results of seismic attribute depending on parasequence under the framework of systems tract. This study shows the prediction of a potential sandbodies distribution of channel turbidite of basin floor fan in the deep lake of Altun area. The braided channel turbidite of middle basin floor fan is characterized by gray and green-grayish sandstone and conglomerate and graveled sandstone with grain-sequence, interbedding with semi-deep and deep lacustrine mudstone. Based on the predicted sandbodies and related structural and oil-generating conditions, the favorable targets for exploration of lithological oil-gas reservoir can be determined.
引文
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