西南石油大学学报(自然科学版) ›› 1999, Vol. 21 ›› Issue (4): 42-45.DOI: 10.3863/j.issn.1000-2634.1999.04.012

• 石油地质勘探 • 上一篇    下一篇

地层基准面原理在TC2井层序分析中的应用

沈守文1 彭大钧2 颜其彬1 黄先律2 李志军3   

  1. 1.西南石油学院石油勘探系,四川南充637001; 2.成都理工学院; 3.吐哈油田
  • 收稿日期:1999-04-16 修回日期:1900-01-01 出版日期:1999-11-20 发布日期:1999-11-20
  • 通讯作者: 沈守文

AN APPLICATION OF STRATIGRAPHIC BASE-LEVEL PRINCIPLE IN SEQUENCE ANALYSIS OF WELL TC2

SHEN Shou-wen PENG Da-jun YAN Qi-bin et al   

  1. Southwest Petroleum Inst
  • Received:1999-04-16 Revised:1900-01-01 Online:1999-11-20 Published:1999-11-20
  • Contact: SHEN Shouwen

摘要: 为了提高层序地层分析的分辨率和储层预测的准确性,运用Cross T A等人倡导的地层基准面原理,对TC2井进行了基准面旋回识别和高频层序划分:中期旋回与层序相对应,一般表现为完整的基准面上升和下降旋回,只有冲积层序(S11、S12、S13)缺失下降旋回沉积;上升旋回包括低水位和水进体系域;下降旋回属高水位体系域,其转折点是密集段;短期旋回相当于准层序。所识别出的3种准层序类型,与早期经典层序地层学的慨念有所不同。研究结果对砂层组的精细对比以及油气藏的预测具有重要意义。
 

关键词: 地层基准面, 层序, 准层序, 准层序组, 识别, 砂层对比, 吐哈盆地

Abstract: Base-level circles and high-frequency sequences for the formations of well tc2 were identified in the light of stratigraphic base-level principle proposed by t. A. Cross. The middle circle fits the sequence, which is indicated by a whole baselevel rising and downward circle, and only the fluvial sequences
(s11, s12, s13) lack downward circle deposition; the rising circle includes lowstand and water progradation system; the downward circle belongs to high-stand. The results are significant for accurate correlation of sand layers and prediction of reservoirs in the studied area. The three types of parasequence were distinguished in this paper, which are different from the
concept of classic sequence stratigraphy.

Key words: stratigraphic base level, parasequence set, sequence, sandbed correlation, Turpan-Hami basin

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