[1]张 琴,肖张波,李智高,等.基于层序格架的源—汇系统精细刻画——以陆丰凹陷深层文昌组三段为例[J].华南地震,2026,46(01):112-121.[doi:10.13512/j.hndz.2026.01.13]
　ZHANG Qin,XIAO Zhangbo,LI Zhigao,et al.Fine Characterization of Source-to-Sink System Based on Sequence Framework—Taking the Phase III of Wenchang Formation in Lufeng Sag as an Example[J].,2026,46(01):112-121.[doi:10.13512/j.hndz.2026.01.13]
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基于层序格架的源—汇系统精细刻画——以陆丰凹陷深层文昌组三段为例()

华南地震[ISSN:1006-6977/CN:61-1281/TN]

卷:
46
期数:
2026年01期
页码:
112-121
栏目:
海洋地球物理
出版日期:
2026-01-31

文章信息/Info

Title:
Fine Characterization of Source-to-Sink System Based on Sequence Framework—Taking the Phase III of Wenchang Formation in Lufeng Sag as an Example
文章编号:
1001-8662（2026）01-0112-10
作者:
张 琴1; 2; 肖张波1; 2; 李智高1; 2; 毛 哲1; 2; 龚 文1; 2; 沈梦蓉1; 2
1.中海石油（中国）有限公司深圳分公司，深圳 518054;2.中海石油深海开发有限公司，深圳 518054
Author(s):
ZHANG Qin1; 2; XIAO Zhangbo1; 2; LI Zhigao1; 2; MAO Zhe1; 2; GONG Wen1; 2; SHEN Mengrong1; 2
1.Shenzhen Branch， CNOOC China Limited ， Shenzhen 518054， China;2.CNOOC Deepwater Development Limited ， Shenzhen 518054， China
关键词:
陆丰凹陷; 文昌组三段; 源—汇系统; 低位体系域; 优势沉积体
Keywords:
Lufeng sag; Phase III of Wenchang formation; Source-sink system; Lowstand systems tract; Domi?nant sedimentary body
分类号:
TE53；P618.13
DOI:
10.13512/j.hndz.2026.01.13
文献标志码:
A
摘要:
陆相断陷湖盆隐蔽油气藏勘探中，优势沉积体系的空间展布规律与控藏机制是当前油气地质研究的前沿科学问题。此研究以珠江口盆地陆丰凹陷文昌组三段为研究对象，利用高精度三维地震、测井、钻井、古生物及地球化学等资料，通过高分辨率层序地层格架约束下的源—汇系统定量解析，构建了断陷湖盆低位体系域优势砂体预测模型，揭示了岩性圈闭发育模式。主要取得以下认识：首次在陆丰凹陷南部缓坡带文三段识别出T82_FFS层序界面，划分出完整的低位体系域沉积体系；建立四类源—汇系统演化模式：窄浅断槽输导型、窄深断槽垂向加积型、宽浅断槽侧向迁移型、宽深断槽复合输导型，其中宽深断槽体系具有最优储层条件；构建了三种岩性圈闭发育模式，其中宽深断槽复合输导型三角洲沉积体发育的上超尖灭型圈闭勘探潜力最大，钻探证实单砂体最大厚度达38.6m，测试获日产油超27m3，成功实现勘探突破。此研究成果为断陷湖盆深层隐蔽油气藏勘探提供了基于源—汇理论体系从定性走向半定量刻画优势砂体的研究范式。
Abstract:
In the exploration of concealed oil and gas reservoirs in continental rift lake basins，the spatial distribu tion patterns and reservoir control mechanisms of dominant sedimentary systems are frontier scientific issues in cur rent oil and gas geological research. In this study，the Phase III of Wenchang Formation in Lufeng Sag of Pearl Riv er Mouth Basin is taken as the research object. Using high-precision three-dimensional seismic，logging，drilling， paleontology and geochemical data，through the quantitative analysis of source-sink system under the constraint of a high-resolution sequence stratigraphic framework，the prediction model of dominant sand body in lowstand sys tem tract of faulted lake basin is constructed，and the development model of lithologic trap is revealed. The main achievements are as follows：For the first time，the T82_FFS sequence boundary was identified in the third mem ber of the Phase III of Wenchang Formation in the southern gentle slope zone of Lufeng Sag，and the complete low stand system tract sedimentary system was divided. Four types of source-sink system evolution models are estab lished： narrow-shallow fault-slot transport type， narrow-deep fault-slot vertical aggradation type， wide-shallow fault-slot lateral migration type，wide-deep fault-slot composite transport type. The wide-deep fault-slot system has the optimal reservoir conditions. Three kinds of lithologic trap development models are constructed. Among them， the upper-super pinch-out trap developed by the wide-deep fault-trough composite transport delta sedimentary body has the greatest exploration potential. Drilling confirmed that the maximum thickness of the single sand body is 38.6 m， and the daily oil production is more than 27 m3/d， and the exploration breakthrough is successfully achieved. The results of this study provide a research paradigm for the exploration of deep subtle reservoirs in fault ed lacustrine basins based on the source-sink theory system from qualitative to semi-quantitative characterization of dominant sand bodies.

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备注/Memo

备注/Memo:
收稿日期：2025-06-30
基金项目：中国海洋石油有限公司“十四五”重大科技项目“深层/超深层碎屑岩源汇系统控砂机制及有效储层展布规律研究”（CCL2022SZPS0238）
作者简介：张琴（1988-），女，工程师，主要从事沉积储层研究工作。E-mail：zhangqin12@cnooc.com.cn
更新日期/Last Update: 2026-02-03