利用地震属性分析沉积环境的误区：以辽河盆地滩海东部凹陷东二段为例

地学前缘 ›› 2012, Vol. 19 ›› Issue (1): 221-227.

利用地震属性分析沉积环境的误区：以辽河盆地滩海东部凹陷东二段为例

杨懿，姜在兴，魏小洁，陈冬，朱克，徐杰

1. 西安石油大学石油工程学院，陕西西安 710065
2. 中国地质大学(北京) 能源学院，北京 100083
3. 中国石油化工股份有限公司石油勘探开发研究院，北京 100083
4. 中国石油化工股份有限公司石油物探技术研究院，江苏南京 210014

收稿日期:2011-10-06 修回日期:2011-12-01 出版日期:2012-01-10 发布日期:2012-01-10
作者简介:杨懿（1978—），男，博士，讲师，主要从事沉积学，测井地质学研究工作。E-mail：yangyichina@126.com
基金资助:
国家科技重大专项项目（2008ZX05009002）

Pitfall in sedimentary interpretation using seismic attributes: An example from Dong2 member in East Depression, offshore area of Liaohe Basin.

1. College of Petroleum Engineering， Xi’an Shiyou University， Xi’an 710065， China 2. School of Energy Resources, China University of Geosciences（Beijing）， Beijing 100083， China 3. Petroleum Exploration and Production Research Institute, Sinopec， Beijing 100083， China 4. Geophysical Research Institute, Sinopec， Nanjing 210014， China

Received:2011-10-06 Revised:2011-12-01 Online:2012-01-10 Published:2012-01-10

摘要/Abstract

摘要：

为了解辽河盆地滩海地区东二段沉积相类型，通过现代河流沉积调研以及岩心、测井、地震相综合分析，结果证明：滩海地区东二段沉积相类型主要以滨浅湖滩坝相为主，而非地震属性图所反映的河流相沉积，地震属性解释存在误区。古沉积环境解释最重要的因素就是如何理解“保存”的概念。河流在自身演化过程中迁移、改道时常发生，在漫长的地质时间内，难以保存一个完整的河道。沉积环境分析中，应当遵循从岩心相—测井相—地震相的分析过程，而不是单纯依据地震属性直接进行沉积相研究。

关键词: 地震属性, 东二段, 河道沉积, 湖泊滩坝沉积, 辽河滩海

Abstract:

To better understand sedimentary types in the Dong2 member of offshore in the Liaohe Basin, through the research of modern river deposition and comprehensive analyses of cores, well logs, and seismic profiles, it was proved that the dominant facies in Dong2 member is characterized by shore shallow lacustrinebeachbar facies, instead of the fluvial facies deduced by seismic attributes slices. The key factor in interpreting ancient depositional environment is the concept of “preservation”. Migration and divagation often happened during the river evolution, so it is hard to preserve a complete river channel. Analyses of the sedimentary environments should follow the study order of core facieslogging faciesseismic facies, but not only based on seismic attributes.

Key words: seismic attributes, Dong 2 Member, fluvial sediment, beachbar, offshore

中图分类号:

TE121.32

杨懿, 姜在兴, 魏小洁, 陈冬, 朱克, 徐杰. 利用地震属性分析沉积环境的误区：以辽河盆地滩海东部凹陷东二段为例[J]. 地学前缘, 2012, 19(1): 221-227.

YANG Yi, JIANG Zai-Xin, WEI Xiao-Ji, CHEN Dong, SHU Ke, XU Jie. Pitfall in sedimentary interpretation using seismic attributes: An example from Dong2 member in East Depression, offshore area of Liaohe Basin.[J]. Earth Science Frontiers, 2012, 19(1): 221-227.