惠州凹陷HZ25转换带构造特征与成藏条件

doi:10.11885/j.issn.16745086.2016.03.06.01

西南石油大学学报(自然科学版) ›› 2017, Vol. 39 ›› Issue (5): 19-30.DOI: 10.11885/j.issn.16745086.2016.03.06.01

惠州凹陷HZ25转换带构造特征与成藏条件

葛家旺^1,2, 朱筱敏^1,2, 陶文芳³, 黎明³, 葛德发¹

1. 中国石油大学(北京)地球科学学院, 北京昌平 102249;
2. 中国石油大学(北京)油气与资源探测国家重点实验室, 北京昌平 102249;
3. 中海石油(中国)深圳分公司研究院, 广东广州 510240

收稿日期:2016-03-06 出版日期:2017-10-01 发布日期:2017-10-01
作者简介:葛家旺,1988年生,男,汉族,湖北宜昌人,博士研究生,主要从事层序地层学及构造沉积学方面的研究工作。E-mail:gjwddn@163.com;朱筱敏,1960年生,男,汉族,江苏江都人,教授,博士,主要从事层序地层学、地震沉积学和储层地质学方面的研究工作。E-mail:xmzhu@cup.edu.cn;陶文芳,1988年生,女,汉族,江西南昌人,硕士,主要从事层序地层学方面的研究工作。E-mail:taowf@cnooc.com.cn;黎明,1987年生,女,汉族,四川蒲江人,硕士,主要从事石油地质方面的研究工作。E-mail:liming61@cnooc.com.cn;葛德发,1991年生,男,汉族,安徽亳州人,硕士研究生,主要从事层序及沉积学方面的研究工作。E-mail:defagecup@sina.com
基金资助:
国家油气重大专项（2016ZX05001002）

The Tectonic Characteristics and Analysis of Hydrocarbon Accumulation Conditions in HZ25 Transfer Zone in Huizhou Sag, Pearl River Mouth Basin

GE Jiawang^1,2, ZHU Xiaomin^1,2, TAO Wenfang³, LI Ming³, GE Defa¹

1. College of Geosciences, China University of Petroleum, Changping, Beijing 102249, China;
2. State Key Laboratory of Petroleum Resource and Prospecting, China University of Petroleum, Changping, Beijing 102249, China;
3. Shenzhen Institute of CNOOC Limited, Guangzhou, Gaungdong 510240, China

Received:2016-03-06 Online:2017-10-01 Published:2017-10-01
Contact: 葛家旺,E-mail:gjwddn@163.com

摘要/Abstract

摘要： 根据最新采集处理的高质量三维地震及3口钻测井分析化验资料，探讨了珠江口盆地惠州凹陷HZ25转换带的构造特征及其对油气成藏的控制作用。精细构造解释、相干体切片及断层位移-距离关系分析表明， HZ25转换带是在NW-SE向拉张作用下形成的同向叠覆的构造转换带，连接F₁断层的下盘和F₂断层的上盘，断层总位移量在其内部基本保持不变；构造转换带应力区还伴生形成F₃和F₄断层，并构成复杂的构造-古地貌格局，分割洼陷并控制储集体分布和油气运移方向；构造转换带是盆外隆起水系的入口，为大套粗粒三角洲及优质储层的发育提供了有利地质条件，相对高部位密集发育的断裂系统及三角洲砂体是油气运移和聚集的优良场所，构造变换带与其控制发育的厚层辫状河三角洲耦合，形成地层-岩性复合圈闭。HZ25构造转换带文昌组的油气突破，为惠州凹陷古近系油气勘探打开局面并提供了方向，分布在惠州凹陷边缘的一系列构造转换带是未来值得重视的勘探地区。

关键词: 构造转换带, 辫状河三角洲, 地层-岩性圈闭, 油气聚集, 惠州凹陷

Abstract: The tectonic characteristics of HZ25 transfer zone in the Huizhou Sag, Pearl River Mouth Basin, and its controlling effect on hydrocarbon accumulation are discussed in this study. The discussion is based on the latest collected and processed high-quality 3D seismic data and the analysis testing data of three drilled wells. The detailed structural interpretation, coherence slices, and analysis of the displacement-distance relationship show that the HZ25 transfer zone is a synthetic overlapping transfer zone subject to NW-SE tension. This transfer zone connects the headwall of the F₁ fault and the hanging wall of the F₂ fault. Its total interior displacement remained unchanged. The F₃ and F₄ faults were formed in association with the stress of the transfer zone areas, and, finally, the complex paleogeomorphology was formed. It splits the sub-sag and controls the distribution of the reservoir body and the direction of hydrocarbon migration. The transfer zone is the entrance to the uplift drainage basin, provides favorable geological conditions for the growth of an extensive set of coarse-grained sedimented deltas, and for a good reservoir. The fracture system and the delta sandstone, with intensive development relative to their high position, are good places for hydrocarbon migration and accumulation. The transfer zone, coupled with its controlled thick-layer braided delta, forms the stratigraphic-lithological trap. The hydrocarbon breakthrough of HZ25 transfer zone during the Wenchang Group facilitates hydrocarbon exploration in Huizhou Sag of the Lower Paleogene stratum and points to targets for exploration. In addition, a series of transfer zones distributed on the edge of the Huizhou Sag could be good targets for exploration in the future.

Key words: transfer zone, braided delta, stratigraphic-lithological trap, hydrocarbon accumulation, Huizhou Sag

中图分类号:

TE122

葛家旺, 朱筱敏, 陶文芳, 黎明, 葛德发. 惠州凹陷HZ25转换带构造特征与成藏条件[J]. 西南石油大学学报(自然科学版), 2017, 39(5): 19-30.

GE Jiawang, ZHU Xiaomin, TAO Wenfang, LI Ming, GE Defa. The Tectonic Characteristics and Analysis of Hydrocarbon Accumulation Conditions in HZ25 Transfer Zone in Huizhou Sag, Pearl River Mouth Basin[J]. 西南石油大学学报(自然科学版), 2017, 39(5): 19-30.

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惠州凹陷HZ25转换带构造特征与成藏条件

The Tectonic Characteristics and Analysis of Hydrocarbon Accumulation Conditions in HZ25 Transfer Zone in Huizhou Sag, Pearl River Mouth Basin

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