|本期目录/Table of Contents|

[1]宗兆云 孙乾浩 陈维涛 罗 明 贾培蒙 何 叶 卫 哲.惠西南地区储层含油气性叠前地震固液解耦识别[J].中国海上油气,2020,32(04):56-64.[doi:10.11935/j.issn.1673-1506.2020.04.006]
 ZONG Zhaoyun SUN Qianhao CHEN Weitao LUO Ming JIA Peimeng HE Ye WEI Zhe.Pre-stack seismic solid-liquid decoupling identification for oil-gas reservoirsin southwestern Huizhou area[J].China Offshore Oil and Gas,2020,32(04):56-64.[doi:10.11935/j.issn.1673-1506.2020.04.006]
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惠西南地区储层含油气性叠前地震固液解耦识别()

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

卷:
第32卷
期数:
2020年04期
页码:
56-64
栏目:
油气勘探(南海东部海域勘探成果专辑)
出版日期:
2020-07-25

文章信息/Info

Title:
Pre-stack seismic solid-liquid decoupling identification for oil-gas reservoirs in southwestern Huizhou area
文章编号:
1673-1506(2020)04-0056-09
作者:
宗兆云1 孙乾浩1 陈维涛2 罗 明2 贾培蒙2 何 叶2 卫 哲2
(1.中国石油大学(华东)地球科学与技术学院 山东青岛 266580; 2.中海石油(中国)有限公司深圳分公司 广东深圳 518054)
Author(s):
ZONG Zhaoyun1 SUN Qianhao1 CHEN Weitao2 LUO Ming2 JIA Peimeng2 HE Ye2 WEI Zhe2
(1. School of Geosciences, China University of Petroleum, Qingdao, Shandong 266580, China; 2. CNOOC China Limited, Shenzhen Branch, Shenzhen, Guangdong 518054, China)
关键词:
惠西南地区 固液解耦 流体识别 地震岩石物理 流体因子 地震反演 弹性阻抗反演
Keywords:
southwestern Huizhou area solid-liquid decoupling fluids identification seismic petrophysics fluid factor seismic inversion elastic impedance inversion
分类号:
TE122.1+4
DOI:
10.11935/j.issn.1673-1506.2020.04.006
文献标志码:
A
摘要:
惠西南地区位于珠江口盆地珠一坳陷惠西半地堑南侧,主要以构造-岩性复式圈闭勘探为主,主力油气层为K08—K22,其砂体纵向变化大,常规的流体识别方法难以排除因孔隙度造成的假“亮点”。本文对Xu-White模型进行改进,建立了变孔隙纵横比的砂泥岩地震岩石物理模型,发展了基于测井约束反演修正的横波预测技术。基于地震岩石物理模型,进行地震岩石物理分析,优选弹性阻抗和固液解耦等效流体体积模量为敏感参数,为储层描述和流体识别工作提供有力支撑。利用贝叶斯弹性阻抗反演方法获取部分角度叠加的弹性阻抗数据体,推导了相应的弹性阻抗方程,对固液解耦等效流体体积模量进行直接提取。该方法综合利用了地质信息、测井数据以及叠前地震AVO信息,既保证了常规弹性阻抗反演的抗噪性,又避免了间接反演的误差累积和孔隙度等物性的影响。实际资料处理结果与测井解释结果和地质认识吻合较好,证明了方法的可行性和实用性
Abstract:
Located in the south of Huixi half graben in Zhu Ⅰ depression of Pearl River Mouth basin, and focusing on the exploration of structural-lithologic compound trap, the southwestern Huizhou area has major reservoirs of K08—K22 with obvious longitudinal variation of sand bodies, which makes it difficult to eliminate false “bright spots” caused by porosity by using the conventional fluid identification methods. In this paper, the Xu-White model is improved by establishing a seismic petrophysics model of sandstone-mudstone with variable pore aspect ratio, and an S-wave prediction technology based on logging constraint inversion correction is developed. Then, seismic petrophysical analysis is carried out based on the seismic petrophysics model to select the proper elastic impedance and solid-liquid decoupling equivalent fluid modulus as sensitive parameters, thus providing strong supports for reservoir description and fluids identification. The elastic impedance data volume with partial angle superimposed can be obtained by Bayesian elastic impedance inversion method, and the corresponding elastic impedance equation can be derived to directly extract the solid-liquid decoupling equivalent fluid bulk modulus. This method makes comprehensive use of geological information, logging data and prestack seismic AVO information, which not only ensures the anti-noise property of conventional elastic impedance inversion, but also avoids cumulative error caused by indirect inversion and the influence of porosity. The practical data processing results are in good agreement with the logging interpretation results and geological understandings, which validates the feasibility and practicability of this method

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2020-03-07 改回日期:2020-05-26*“十三五”国家科技重大专项“南海东部海域勘探新领域及关键技术(编号:2016ZX05024-004)”部分研究成果。 第一作者简介: 宗兆云,男,教授,博士,毕业于中国石油大学(华东),现从事地球物理理论与方法方面的工作。地址:山东省青岛市黄岛区长江西路66号(邮编:266580)。E-mail:zongzhaoyun@upc.edu.cn。
更新日期/Last Update: 2020-07-20