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[1]于 水 邓运华 李宏义 肖伶俐 武爱俊 李凡异 张振宇.北部湾盆地流二段油页岩形成条件与分布控制因素[J].中国海上油气,2020,32(02):24-33.[doi:10.11935/j.issn.1673-1506.2020.02.004]
 YU Shui DENG Yunhua LI Hongyi XIAO Lingli WU Aijun LI Fanyi ZHANG Zhenyu.Forming conditions and distribution controlling factors of oil shale in Liu 2 Member of Beibuwan basin[J].China Offshore Oil and Gas,2020,32(02):24-33.[doi:10.11935/j.issn.1673-1506.2020.02.004]
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北部湾盆地流二段油页岩形成条件与分布控制因素()

《中国海上油气》[ISSN:1673-1506/CN:11-5339/TE]

卷:
第32卷
期数:
2020年02期
页码:
24-33
栏目:
油气勘探
出版日期:
2020-03-25

文章信息/Info

Title:
Forming conditions and distribution controlling factors of oil shale in Liu 2 Member of Beibuwan basin
文章编号:
1673-1506(2020)02-0034-10
作者:
于 水 邓运华 李宏义 肖伶俐 武爱俊 李凡异 张振宇
(中海油研究总院有限责任公司 北京 100028)
Author(s):
YU Shui DENG Yunhua LI Hongyi XIAO Lingli WU Aijun LI Fanyi ZHANG Zhenyu
(CNOOC Research Institute Co., Ltd., Beijing 100028, China)
关键词:
北部湾盆地 流二段 油页岩 形成条件 分布模式 控制因素
Keywords:
Beibuwan basin Liu 2 Member oil shale forming conditions distribution pattern controlling factor
分类号:
TE121.1
DOI:
10.11935/j.issn.1673-1506.2020.02.004
文献标志码:
A
摘要:
北部湾盆地流二段油页岩是油气成藏重要烃源岩,其形成条件与分布控制因素研究对指导盆地内勘探新区油页岩预测和资源潜力评价具有重要意义。本文在对北部湾盆地流二段烃源岩系统采样和分析测试基础上,开展了地质宏观分析与元素微观分析等多尺度的研究,认为北部湾盆地流二段油页岩形成需要富营养化的湖盆、温暖湿润的气候、还原性水体环境、适中的地层沉积速率等4方面条件,其中富营养化的湖盆是油页岩形成的先决地质条件,流二段沉积时期花岗岩物源区营养物质输入为富营养化湖盆的形成提供营养物质基础; 钻井证实油页岩在不同凹陷分布模式不同,流二段上层序涠西南凹陷油页岩发育规模明显较乌石凹陷小,分析认为不同时期花岗岩物源区营养物质输入量的变化控制了湖盆富营养化程度和古生产力的变化,从而决定了涠西南凹陷与乌石凹陷流二段上层序油页岩发育的差异性。
Abstract:
The oil shale of Liu 2 Member is main source rock for hydrocarbon accumulation in Beibuwan basin, so the study on its formation conditions and distribution controlling factors is of great significance to the prediction of oil shale and the evaluation of resource potential in the new exploration area of the basin. On the basis of systematic collection and analysis of source rock samples, the macro and micro multi-scale research work was carried out. It is believed that the forming conditions of oil shale in Liu 2 Member of Beibuwan basin include eutrophic lake basin, warm and humid climate, reductive water environment, and moderate stratum deposition rate. Among them, eutrophic lake basin is the precondition for the formation of oil shale, and nutrients from granite source area provided nutrient basis for the formation of eutrophic lake basin during the sedimentary period of Liu 2 Member. Drilling practice proves that the distribution patterns of oil shale in different sags are different. The development scale of oil shale in upper part of Liu 2 Member in Weixinan sag is obviously smaller than that in Wushi sag. Analysis shows that the change of nutrient input from granite source area in different periods controlled the eutrophication degree and paleo-productivity, which determines the difference of oil shale development in the upper part of Liu 2 Member in Weixinan sag and Wushi sag.

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备注/Memo

备注/Memo:
*“十三五”国家科技重大专项“中国近海富烃凹陷优选与有利勘探方向预测(编号:2016ZX05024-002)”部分研究成果。 第一作者简介: 于水,男,教授级高级工程师,主要从事海外与中国近海勘探研究工作。地址:北京市朝阳区太阳宫南街6号院A座1106室(邮编:100028)。E-mail:yushui@cnooc.com.cn。收稿日期:2019-11-13 改回日期:2020-02-14 (编辑:冯 娜)
更新日期/Last Update: 2020-03-30