番禺低隆起古地貌恢复及有利储集体分布  

RESTORATION OF PALAEOGEOMORPHOLOGY AND FAVORABLE RESERVOIR BODIES DISTRIBUTION OF PANYU LOW UPLIFT

作　　者：谢利华[1] 林畅松[1] 董伟[1] 崔立叶[1] 刘道理 

机构地区：[1]中国地质大学能源学院,北京100083 [2]中国海洋石油（中国）有限公司深圳分公司技术部,广东广州510240

出　　处：《大庆石油地质与开发》2009年第3期10-14,共5页Petroleum Geology & Oilfield Development in Daqing

摘　　要：在层序地层分析的基础上，地层去压实并进行古水深的校正，对番禺低隆起珠江组－韩江组的7个三级层序的古地貌进行了定量恢复，分为隆起区、缓坡带、陡坡带和沟槽区四大地貌单元。研究表明，断陷晚期研究区东南部的断裂坡折带和坳陷期存在的北东向的隆起－缓坡坡折带或缓坡带对盆地的沉积体系域及砂体的分布起重要的控制作用，是低位域砂体的分布区域，相对隆起地区是海侵体系域、陆棚边缘体系域及高位域砂体的分布区域，沟槽区是有利的低位域砂体充填地区古隆起－缓坡坡折带或缓坡区、古断裂坡折带和沟槽区是该区最有利的非构造圈闭分布区；其次是隆起区，形成上超不整合地层圈闭和削蚀不整合地层圈闭。Based on analysis on sequence stratigraphy, through formation de-compaction and palaeobathymetric calibration, this paper performs quantitative restoration of palaeogeomorphology with 7 sequences of Class 3 from Zhujiang-Hangjiang Formation in Panyu low uplift, which can be divided into 4 geomorphic units including uplift, gentle slope, abrupt slope and groove. Study shows that faulted slope break belt in the southeast of studied area in late rifting period, as well as uplift-gentle slope break belt or gentle slope in NE strike existing in depressing period have major control on depositional system tract and distribution of sand body in the basin, being the distribution area of low tract sand body. Relative uplift area is the distribution area of marine ingression system tract, continental shelf margin system tract and high tract sand body. Groove is favorable filling area for low tract sand body. Palaeo- high-gentle slope break belt or gentle slope, palaeo faulted slope break and groove area are the most favorable distribution area of non-structural traps in this area, secondarily uplift area, forms onlapping unconformity stratigraphic traps and truncated unconformity stratigraphic traps.

关 键 词：古地貌 坡折带 低位域 高位域 海侵体系域 陆棚边缘体系域 沉积体系 

分 类 号：TE121[石油与天然气工程—油气勘探]