摘要
以珠一坳陷北部洼陷带为例,系统阐述了珠江口盆地始新统半深—深湖相烃源岩综合判识方法与成果。该方法集区域地质背景分析、沉积物可容空间分析、地震相类比分析、沉积相序分析、生物标志化合物分析等为一体,可以综合判识一个地区是否发育半深—深湖相烃源岩,并在剖面和平面上刻画出其分布范围。应用该方法对北部洼陷带的8个洼陷进行了综合判识,识别出惠州5洼、西江主洼、海丰33洼、惠州10洼、西江23洼等5个洼陷发育文昌组半深—深湖相烃源岩。该方法是评估少井、无井低勘探程度地区半深—深湖相烃源岩发育程度的实用和有效的方法,对珠江口盆地其他地区和中国近海其他盆地半深—深湖相烃源岩判识具有参考价值。
A composite recognition method for Eocene semi-deep and deep lacustrine facies source rocks and the application results are systematically discussed in northern subsags belt of Zhu I depression, Pearl River Mouth basin. This method colligated analysis of regional geology, sedimentary capacitive space, seismic facies analogy, sedimentary facies sequence and biomarker and can recognize semi-deep and deep lacustrine facies source rocks and their distribution ranges horizontally and vertically. This method is applied to the total 8 sags in northern subsags belt, and 5 sags of them, namely, HZ5 subsag, XJ main subsag, HF33 subsag, HZ10 subsag and XJ23 subsag, develop semi-deep and deep lacustrine facies source rocks in Wenchang Formation of Eocene. This method is practicable and effective for assessing the development degree of semi-deep and deep lacustrine facies source rocks in less explored areas with sparse borehole. The method may have some reference value or illumination for recognizing semi-deep and deep lacustrine facies source rocks in other sags in Pearl River Mouth basin and other basins offshore China.
出处
《中国海上油气》
CAS
CSCD
北大核心
2015年第3期10-15,24,共7页
China Offshore Oil and Gas
基金
“十二五”国家科技重大专项“近海富烃凹陷资源潜力再评价和新区、新领域勘探方向(编号:2011ZX05023-001)”
“近海大中型油气田形成条件与分布(编号:2011ZX05023-006)”部分研究成果
关键词
半深-深湖相
烃源岩
综合判识
珠江口盆地
珠-坳陷
北部洼陷带
始新统
semi-deep and deep lacustrine facies
source rock
composite recognition method
Pearl RiverMouth basin
Zhu I depression
northern subsags belt
Eocene
作者简介
吴克强，男，硕士，现为中海油研究总院综合地质首席工程师，主要从事中国近海新区、新领域油气勘探研究及技术管理工作。地址：北京市朝阳区太阳宫南街6号院海油大厦（邮编：100028）。E-mail：wukq@cnooc．com．cn。
