西南石油大学学报(自然科学版)

• 地质勘探 • 上一篇    下一篇

塔北却勒地区古近系薄砂层地震沉积学研究

陈戈1,闫晓芳1,赵继龙1,刘永福2,郑伟东3   

  1. 1. 中国石油杭州地质研究院,浙江杭州310023
    2. 中国石油塔里木油田公司勘探开发研究院,新疆库尔勒841000
    3. 中国石油西部钻探工程有限公司试油公司,新疆克拉玛依834000
  • 出版日期:2013-08-01 发布日期:2013-08-01
  • 基金资助:

    国家科技重大专项“大型油气田及煤层气开发”(2008ZX05004–002)。

Study of Seismic Sedimentology on Paleogene Thin-bedded Sand
Section in Quele,Tabei Uplift

  • Online:2013-08-01 Published:2013-08-01

摘要:

利用频谱分解和地层切片多属性综合分析技术,结合关键井岩性资料及不同成因类型砂体的地貌形态,在塔
北却勒地区三维地震资料区古近系开展地震沉积学应用研究。优选出的GR 拟声波反演最能有效预测目标砂体。通
过对一系列典型地层切片的分析研究,结合钻井信息进行动态解释,可以看出研究层段主要为扇三角洲前缘水下分流
河道砂体和席状砂,纵向上主河道多期迁移叠置,扇三角洲前缘水下分流河道砂体间沉积了相对稳定的滨浅湖泥岩。

关键词: 地震沉积学, 频谱分解, GR 拟声波反演, 地层切片, 沉积微相

Abstract:

Seismic sedimentology is the use of seismic data to study sedimentary rocks and the processes by which they are
formed. It mainly use 3D seismic information and modern geophysical technology to study sedimentary systems,sedimentary
facies spread and its evolution history. We use the technology of the frequency spectrum decomposition and stratal slicing,the
key wells constraints to facies types,as well as geomorphic features of different sand shapes to start seismic sedimentological
studies in paleogene thin-bedded sand section in Quele,Tabei Uplift. By analyzing a series of typical stratal slices,we find that
the target zone is mainly subaqueous distributary channel of fan-delta,the delta lobes override in vertical profile,and lacustrine
mudstone deposits between underwater distributary of fan-delta.

Key words: seismic sedimentology, frequency spectrum decomposition, GR quasi-acoustic inversion, stratal slicing, sedimentary
microfacies