鄂尔多斯盆地南部富县地区走滑断裂发育特征及演化

张成; 唐大卿; 齐荣; 张威; 冯权

doi:10.3969/j.issn.1006-6535.2025.03.008

特种油气藏 >

2025 , Vol. 32 >Issue 3: 66 - 75

DOI: https://doi.org/10.3969/j.issn.1006-6535.2025.03.008

地质勘探

鄂尔多斯盆地南部富县地区走滑断裂发育特征及演化

张成 ,
唐大卿 ,
齐荣 ,
张威 ,
冯权

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1.中国地质大学(武汉),湖北武汉 430074;
2.中国石化华北油气分公司,河南郑州 450006

张成(1999—),男,2022年毕业于河南工程学院勘查技术与工程专业,现为中国地质大学(武汉)地质工程专业在读硕士研究生,主要从事盆地构造分析及地震地质构造解释工作。

收稿日期: 2024-07-08

修回日期: 2025-02-22

网络出版日期: 2025-07-08

基金资助

中国石化科技项目“泾河油田油藏类型、富集规律及有利目标优选”(P21026)

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Development characteristics and evolution of strike-slip fractures in the Fuxian Area of the southern Ordos Basin

ZHANG Cheng ,
TANG Daqing ,
QI Rong ,
ZHANG Wei ,
FENG Quan

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1. China University of Geosciences (Wuhan), Wuhan, Hubei 430074, China;
2. Sinopec North China Oil & Gas Company, Zhengzhou, Henan 450006, China

Received date: 2024-07-08

Revised date: 2025-02-22

Online published: 2025-07-08

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摘要

鄂尔多斯盆地南部富县地区油气资源丰富,该区小位移走滑断裂发育且对油气运聚成藏具有重要控制作用。通过对富县地区三维地震资料精细解释,综合前人研究成果及油气勘探实践,探讨了富县地区走滑断裂的发育特征及其成因演化。研究表明:富县地区主要发育小规模和小位移走滑断裂,发育程度较低,断层水平及垂直位移量均不明显,剖面上断裂多以高陡直立状、花状和“y”字形为主要特征,平面上断裂呈多走向和杂乱展布特征;断裂活动可划分为4个期次,即加里东期右行张扭活动、海西晚期右行走滑活动、印支期继承性走滑活动、燕山期—喜山早期左行走滑活动;断裂演化过程主要受基底断裂和盆地南部多期次构造活动的影响,基底断裂的活化和构造应力由盆缘传至盆内的传递衰减使得研究区断裂活动以小位移弱走滑为主要运动特征。该研究可为富县地区油源断裂研究及勘探实践提供理论参考。

关键词： 走滑断裂; 构造特征; 构造演化; 富县地区; 鄂尔多斯盆地南部

本文引用格式

张成 , 唐大卿 , 齐荣 , 张威 , 冯权 . 鄂尔多斯盆地南部富县地区走滑断裂发育特征及演化[J]. 特种油气藏, 2025 , 32(3) : 66 -75 . DOI: 10.3969/j.issn.1006-6535.2025.03.008

Abstract

The Fuxian Area of the southern Ordos Basin is rich in oil and gas resources. This area is characterized by the development of small-displacement strike-slip faults, which play an important controlling role in the migration and accumulation of oil and gas. Through detailed interpretation of 3D seismic data in the Fuxian Area, combined with previous research results and oil and gas exploration practices, the development characteristics and evolutionary causes of strike-slip faults in the Fuxian Area were explored. The study shows that small-scale and small-displacement strike-slip faults are mainly developed in the Fuxian Area of southern Ordos Basin, with a low degree of development. Both horizontal and vertical displacements of the faults are not significant. On the profile, the faults are mainly characterized by steep upright, flower-like, and "y"-shaped features, while on the plane, the faults exhibit multiple orientations and a chaotic distribution pattern. The fault activity can be divided into four stages, namely right-lateral tensional activity during the Caledonian period, right-lateral strike-slip activity during the late Hercynian period, inherited strike-slip activity during the Indosinian period, and left-lateral strike-slip activity during the Yanshanian period to the early Himalayan period. The evolution of the faults is mainly influenced by the basement faults and the multi-stage tectonic activities in the southern part of the basin. The activation of the basement faults and the attenuation of the tectonic stress transmitted from the basin margin to the interior of the basin result in the fault activity in the study area being characterized mainly by small-displacement weak strike-slip motion. This study provides a theoretical reference for the study of oil source faults and exploration practices in the Fuxian Area.

Key words： strike-slip fracture; tectonic features; tectonic evolution; Fuxian Area; southern Ordos Basin

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