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[1]袁丙龙 张 辉 张连枝 叶 青 晁彩霞 陈之贺 王 猛.涠西南凹陷浅水三角洲前缘砂体类型及分布模式[J].中国海上油气,2020,32(02):78-87.[doi:10.11935/j.issn.1673-1506.2020.02.009]
 YUAN Binglong ZHANG Hui ZHANG Lianzhi YE Qing CHAO Caixia CHEN Zhihe WANG Meng.Types and distribution patterns of shallow water delta front sand bodies in Weixinan sag[J].China Offshore Oil and Gas,2020,32(02):78-87.[doi:10.11935/j.issn.1673-1506.2020.02.009]
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涠西南凹陷浅水三角洲前缘砂体类型及分布模式()

《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:
78-87
栏目:
油气田开发(南海西部海域开发成果专辑)
出版日期:
2020-03-25

文章信息/Info

Title:
Types and distribution patterns of shallow water delta front sand bodies in Weixinan sag
文章编号:
1673-1506(2020)02-0078-10
作者:
袁丙龙 张 辉 张连枝 叶 青 晁彩霞 陈之贺 王 猛
(中海石油(中国)有限公司湛江分公司 广东湛江 524057)
Author(s):
YUAN Binglong ZHANG Hui ZHANG Lianzhi YE Qing CHAO Caixia CHEN Zhihe WANG Meng
(CNOOC China Limited, Zhanjiang Branch, Zhanjiang, Guangdong 524057, China)
关键词:
涠西南凹陷 浅水三角洲 水下分流河道 复合砂体表征 分布模式
Keywords:
Weixinan sag shallow water delta underwater distributary channel composite sand body characterization distribution patterns
分类号:
TE32+1
DOI:
10.11935/j.issn.1673-1506.2020.02.009
文献标志码:
A
摘要:
北部湾盆地涠西南凹陷古近系发育大型浅水三角洲,加深对储层砂体及分布规律的认识对油田开发调整至关重要。在对涠洲组三段浅水三角洲发育背景分析的基础上,探讨了三角洲前缘砂体类型及分布模式。基于岩心描述划分出12种岩相、6种岩相组合,发育水下分流河道、前缘席状砂及分流间湾等微相,其中骨架砂体为复合正韵律的水下分流河道,河口坝极不发育,前缘席状砂和分流间湾储层厚度较薄,发育规模较小。以涠洲W油田为例,建立了“井震结合定边界、动静结合定连通、地质知识库为约束”的复合砂体表征方法,解剖了砂体的分布,总结了砂体分布模式,即剖面上砂体由横向上的切叠式、侧叠式和孤立式及垂向上的深切式、垂叠式和分隔式等6种构型样式组成,平面上砂体以辫状、交织条带状复合水道为主,水道间发育小规模分流间湾。本文研究丰富了对浅水三角洲前缘的沉积认识。
Abstract:
Large shallow water deltas have been developed in the Paleogene Weixinan sag, Beibuwan Basin, and it is important to deepen the understandings on reservoir sand bodies and distribution rules for oilfield development and adjustment. Through analyzing the development background of the shallow water deltas in the third Member of Weizhou Formation, the types and distribution patterns of delta front sand bodies have been discussed. Based on the core description, 12 types of lithofacies and 6 types of lithofacies assemblages have been divided, and the microfacies such as the underwater distributary channels, front sheet-like sand and distributary bay have been identified. Among them, the skeleton sand bodies are the composite positive rhythm underwater distributary channels, the estuary bar is extremely undeveloped, and the thicknesses of the front sheet-like sand and distributary bay are relatively thin, exhibiting a limited development scale. By taking Weizhou W Oilfield as an example, the composite sand body characterization method of “well-seism combined boundary determining, dynamic-static combined connectivity defining, and taking geological knowledge base as a constraint” has been established. By analyzing the distribution of sand bodies, 6 types of sand body distribution patterns have been summarized on the profile, i.e., the lateral cut-and-stack of sand bodies, the side stacked, the isolated type, the vertical deeply incised, the vertical stacked and the separated. On the plane, the sand bodies are dominated by the composite channel of braided and interlaced, and small distributary bays were developed between the channels. This study has enriched the understandings on the shallow water delta front deposition.

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相似文献/References:

[1]李振鹏.渤海海域分流河道型浅水三角洲储层构型表征——以歧口油田明下段地层为例[J].中国海上油气,2020,32(01):103.[doi:10.11935/j.issn.1673-1506.2020.01.012]
 LI Zhenpeng.Configuration characterization of distributary channel-type shallow water delta reservoirs in Bohai sea:Taking the lower Minghuazhen Formation of QK oilfield as an example[J].China Offshore Oil and Gas,2020,32(02):103.[doi:10.11935/j.issn.1673-1506.2020.01.012]

备注/Memo

备注/Memo:
* 中海石油(中国)有限公司综合科研项目“ 复杂断块油藏注水开发剩余油分布规律及主控因素研究(编号:YXKY-2018-ZJ-02)”部分研究成果。 第一作者简介: 袁丙龙,男,工程师,主要从事储层评价、沉积相研究。地址:广东省湛江市坡头区中海石油(中国)有限公司湛江分公司(邮编:524057)。E-mail:yuanbl5@cnooc.com.cn。收稿日期:2019-11-07 改回日期:2020-01-17 (编辑:杨 滨)
更新日期/Last Update: 2020-03-30