海相油气地质2025，Vol.30Issue(5)：457-470,14.DOI:10.3969/j.issn.1672-9854.2025.05.007
阿姆河右岸西部卡洛夫阶—牛津阶高频层序地层框架内的台内滩演化
Evolution of intra-platform shoal within the high-frequency sequence stratigraphic framework of Callovian-Oxfordian in the western right bank of the Amu Darya River
摘要
Abstract
The development potential of the Middle-Upper Jurassic Callovian-Oxfordian carbonate rocks in the western right bank of the Amu Darya River in Central Asia is limited by the poor understanding of the distribution of intra-platform shoals.Based on the high-frequency sequence division technology of INPEFA and wavelet transform,the high-frequency sequence stratigraphic framework is established.Through the integrated use of 3D seismic data,the planar distribution of the platform shoal is systematically described and its vertical evolution pattern is studied.The results show that:(1)The Callovian-Oxfordian in the study area can be divided into 5 third-order sequences and 15 fourth-order sequences.The Oxfordian is composed of 3 third-order sequences and 9 fourth-order sequences.The Callovian is composed of 2 third-order sequences and 6 fourth-order sequences,which are significantly affected by the paleotopographic differences and have locally developed onlap deposits.(2)Six types of lithofacies are mainly developed in the study area,including granular limestone and grain-bearing lime mudstone to silt-sized crystalline limestone.In the early stage,it is a carbonate gentle slope model,and the water body deepens from west to east.In the late stage,it transitions to a restricted platform-evaporation platform model,and multiple sets of shoal thin layers are developed.(3)During the Callovian-Oxfordian period,the water body continued to become shallow,and the shoal development exhibited a stage-wise enhancement.The sedimentary evolution shows that the XVac,XVp and XVm formations represent the peak intervals of shoal facies development,and the intra-platform shoals generally show the characteristics of vertical stacking patterns and lateral amalgamation during the late stages.关键词
INPEFA/小波变换/高频层序地层/台内滩/中上侏罗统/阿姆河右岸Key words
INPEFA/wavelet transform/high-frequency sequence stratigraphy/intra-platform shoal/Middle-Upper Jurrasic/right bank of Amu Darya River分类
石油、天然气工程引用本文复制引用
张天择,罗敏,龚幸林,杨唐斌,郭胜利,黄文松,祝厚勤,张文起,张宏伟,蒋凌志,王雯雯,王思琦,蒋子文..阿姆河右岸西部卡洛夫阶—牛津阶高频层序地层框架内的台内滩演化[J].海相油气地质,2025,30(5):457-470,14.基金项目
本文受中国石油国际勘探开发有限公司海外技术研发项目"海外重点盆地成藏规律与风险勘探领域研究"(编号:25ZYGJCJ002)资助 （编号:25ZYGJCJ002）
