|本期目录/Table of Contents|

[1]李 虹 张新涛 郭 涛 张 藜 王 军.渤海石南斜坡带东二下段湖底扇沉积特征、微相分布及相模式[J].中国海上油气,2020,32(05):54-62.[doi:10.11935/j.issn.1673-1506.2020.05.007]
 LI Hong ZHANG Xintao GUO Tao ZHANG Li WANG Jun.Sedimentary characteristics, microfacies distribution and facies model of the sublacustrine fan in E3dL2 of the Shinan slope zone of Bohai sea[J].China Offshore Oil and Gas,2020,32(05):54-62.[doi:10.11935/j.issn.1673-1506.2020.05.007]
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渤海石南斜坡带东二下段湖底扇沉积特征、微相分布及相模式()

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

卷:
第32卷
期数:
2020年05期
页码:
54-62
栏目:
油气勘探
出版日期:
2020-09-25

文章信息/Info

Title:
Sedimentary characteristics, microfacies distribution and facies model of the sublacustrine fan in E3dL2 of the Shinan slope zone of Bohai sea
文章编号:
1673-1506(2020)05-0054-09
作者:
李 虹 张新涛 郭 涛 张 藜 王 军
(中海石油(中国)有限公司天津分公司 天津 300459)
Author(s):
LI Hong ZHANG Xintao GUO Tao ZHANG Li WANG Jun
(CNOOC China Limited, Tianjin Branch, Tianjin 300459, China)
关键词:
渤海海域 石南斜坡带 东二下段 湖底扇 沉积特征 微相分布 演化特征 相模式
Keywords:
Bohai sea Shinan slope zone E3dL2 sublacustrine fan sedimentary characteristics microfacies distribution evolution characteristics facies model
分类号:
TE121.3
DOI:
10.11935/j.issn.1673-1506.2020.05.007
文献标志码:
A
摘要:
基于钻井、测井、取心、分析化验及三维地震资料,研究了渤海石南斜坡带东二下段湖底扇沉积特征、沉积微相分布及演化特征等,并结合物源体系、湖平面变化、坡折带与湖底扇成因耦合关系,建立了湖底扇发育的沉积模式,明确了优质储层分布与成因类型。石南斜坡带东二下段湖底扇内部发育砂质碎屑流与浊流沉积物,表现为具有面状泥岩碎屑组构的箱状砂岩及悬浮搬运的正粒序砂岩的典型沉积特征; 该湖底扇共发育6期,呈“先进积、后退积、由东向西”的迁移规律,扇内发育水道、天然堤/水道间漫溢、沉积朵叶等微相,顺物源平面相序依次表现为“水道-天然堤/水道间漫溢-沉积朵叶-(半)深湖”的变化特征,纵向上具有早期沉积朵叶向晚期水道、天然堤/水道间漫溢微相的演化特征。综合分析认为,北部供源三角洲、石南一号断裂、湖平面变化等因素共同控制了石南斜坡带东二下段湖底扇的扇体迁移、分布规模、微相演化特征等,形成了三角洲前缘滑塌成因、断层坡折控制、线源供给的湖底扇相模式
Abstract:
Based on the drilling, logging, coring, analysis assay and testing data as well as the 3D seismic data, the sedimentary characteristics, microfacies distribution and evolution characteristics of the sublacustrine fan in E3dL2 of the Shinan slope zone of Bohai sea were studied, and the sedimentary model of the sublacustrine fan development was established in combination with the provenance system, lacustrine level changes, and the genetic coupling relationship between the slope break zone and the sublacustrine fan. Therefore, the distribution and genetic types of high-quality reservoir were clarified. Sandy debris flow and turbidity sediments were developed inside the sublacustrine fan of E3dL2 of the Shinan slope zone, and they can be characterized by the typical sedimentary characteristics of box-shaped sandstone with planar mudstone clastic fabric and the normal grading sandstone of suspension transport. This sublacustrine fan has undergone 6 stages of development in total, showing a migration pattern of “first progradation and then retrogradation, and from east to west”. The channel microfacies, the overflow microfacies between natural levees and channels, and the sedimentary lobe microfacies were developed inside the fan body. Along the provenance plane, the facies sequence shows the change characteristics of “channel-natural levee/inter-channel overflow-sedimentary lobe-(semi-)deep lake”. Longitudinally, it presents the evolution characteristics of from the early sedimentary lobe microfacies to the late channel, natural levee/ inter-channel overflow microfacies. Through comprehensive analysis, it is considered that factors such as the northern source delta, Shinan No.1 fault and lacustrine level changes jointly controlled the fan migration, distribution scale, and microfacies evolution characteristics of the sublacustrine fan in E3dL2 of the Shinan slope zone. On this basis, the sublacustrine fan facies model of delta front slump-genetic, fault slope break control, and line source supply was further formed

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备注/Memo

备注/Memo:
收稿日期:2019-11-07 改回日期:2020-04-20 *“十三五”国家科技重大专项“渤海海域勘探新领域及关键技术研究(编号:2016ZX05024-003)”部分研究成果。第一作者简介: 李虹,男,工程师,主要从事油气勘探沉积地质研究工作。地址:天津市滨海新区海川路2121号渤海石油大厦B座(邮编:300459)。E-mail:lihong31@cnooc.com.cn。
更新日期/Last Update: 2020-09-20