[1]曾晓华,胡 威,肖大志,等.涠西南凹陷F油田流一段储层沉积微相及砂体连通性研究[J].复杂油气藏,2023,16(03):293-300.[doi:10.16181/j.cnki.fzyqc.2023.03.008]
 ZENG Xiaohua,HU Wei,XIAO Dazhi,et al.Study on reservoir sedimentary microfacies and sand body connectivity of the first member of Liushagang Formation in F Oilfield of Weixinan Sag[J].Complex Hydrocarbon Reservoirs,2023,16(03):293-300.[doi:10.16181/j.cnki.fzyqc.2023.03.008]
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涠西南凹陷F油田流一段储层沉积微相及砂体连通性研究()
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《复杂油气藏》[ISSN:1674-4667/CN:31-2019/TQ]

卷:
16卷
期数:
2023年03期
页码:
293-300
栏目:
油气开发
出版日期:
2023-09-25

文章信息/Info

Title:
Study on reservoir sedimentary microfacies and sand body connectivity of the first member of Liushagang Formation in F Oilfield of Weixinan Sag
作者:
曾晓华胡 威肖大志陈之贺张晓禹
中海石油(中国)有限公司海南分公司 海南 海口 570312
Author(s):
ZENG XiaohuaHU WeiXIAO DazhiCHEN ZhiheZHANG Xiaoyu
Hainan Branch of CNOOC (China),Haikou 570312,China
关键词:
沉积相地震反演砂体叠置关系储层连通性涠西南凹陷
Keywords:
sedimentary faciesseismic inversionsand body superposition relationshipreservoir connectivityWeixinan Sag
分类号:
TE122
DOI:
10.16181/j.cnki.fzyqc.2023.03.008
文献标志码:
A
摘要:
涠西南凹陷F油田处于开发中后期,主要含油层段为古近系流沙港组流一段,现今产量下降快,稳产难度大,急需进行注采优化调整。通过对沉积相和砂体叠置关系研究,分析了储层连通性,厘清储层分布和连通关系。通过岩心相和测井相分析,在扇三角洲前缘亚相背景下,细分出4种微相,采用连井剖面微相对比、储层地震反演及连通性分析刻画了沉积微相平面展布特征,并划分出切叠型、叠加型、接触型和孤立型等4种砂体叠置类型,不同砂体叠置关系具有不同的连通特征。依据沉积微相展布特征、砂体叠置关系和地震储层反演综合研究形成储层连通性地质初判,结合生产动态、监测资料和软件模拟结果对连通初判进行验证与完善,并创新采用注采对应率对储层连通性进行定量表征,最终得到油田各油层储层连通性评价成果。储层沉积微相和砂体连通性研究成果有效地指导油田的生产调整优化,解决了老油田稳产增产的迫切需要。
Abstract:
The F Oilfield of the Weixinan Depression is in the middle and late stage of development,and the main oil-bearing interval is the first member of the Liushagang Formation of the Paleogene system. At present,production is declining rapidly,and it is difficult to stabilize production,so there is an urgent need to optimize and adjust the injection and production. Through the study of sedimentary facies and sandbody stacking relationship,the reservoir connectivity was analyzed,and the reservoir distribution and connectivity relationship was clarified. Based on the analysis of the core phase and logging phase,four types of microfacies were subdivided under the subfacies background of the fan delta front,and the planar distribution characteristics of sedimentary microfacies were described by the microfacies comparison of connecting well profiles,seismic inversion of the reservoir,and connectivity analysis. Four types of sand body stacking,including cut-and-stack,superimposed,contact,and isolated were also classified. Different sand body overlaps have different connectivity characteristics. Based on the sedimentary microfacies distribution characteristics,sand body superposition relationship and seismic reservoir inversion,a comprehensive study was conducted to form a preliminary judgment of reservoir connectivity,which was verified and improved by combining the production dynamics,monitoring data,and software simulation results and an innovative injection and production correspondence rate was used to quantitatively characterize reservoir connectivity,and finally,the results of reservoir connectivity evaluation for each oil layer were obtained. The research results of reservoir sedimentary microfacies and sand body connectivity can effectively guide the production adjustment and optimization of oilfields,and solve the urgent need for stable and increased production in the old oilfield.

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备注/Memo

备注/Memo:
收稿日期:2022-10-18;改回日期:2022-12-01。
第一作者简介:曾晓华(1982—),工程师,主要从事油气田开发地质学工作。E-mail:zengxh1@cnooc.com.cn。
更新日期/Last Update: 1900-01-01