[1]朱宝衡,谢春雨.多尺度混合反演技术在河流相薄储层预测中的应用[J].复杂油气藏,2021,14(02):22-27.[doi:10.16181/j.cnki.fzyqc.2021.02.004]
 ZHU Baoheng,XIE Chunyu.Application of multiscale hybrid inversion technology in predicting of fluvial-facies thin-reservoir[J].Complex Hydrocarbon Reservoirs,2021,14(02):22-27.[doi:10.16181/j.cnki.fzyqc.2021.02.004]
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多尺度混合反演技术在河流相薄储层预测中的应用
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《复杂油气藏》[ISSN:1674-4667/CN:31-2019/TQ]

卷:
14
期数:
2021年02期
页码:
22-27
栏目:
油气勘探
出版日期:
2021-06-25

文章信息/Info

Title:
Application of multiscale hybrid inversion technology in predicting of fluvial-facies thin-reservoir
作者:
朱宝衡谢春雨
中国石化上海海洋油气分公司勘探开发研究院,上海 200120
Author(s):
ZHU BaohengXIE Chunyu
Institute of Exploration and Development of Shanghai Offshore Oil & Gas Company,SINOPEC,Shanghai200120,China
关键词:
多尺度频率域反演储层预测河流相储层三合村凹陷
Keywords:
multi-scale frequency domain inversion reservoir prediction fluvial reservoirSanhecun Sag
分类号:
TE122
DOI:
10.16181/j.cnki.fzyqc.2021.02.004
文献标志码:
A
摘要:
传统的声阻抗反演方法分辨率有限,对薄储层(砂层厚度小于10 m)的准确识别存在一定的困难。频率域分频多尺度反演方法是在三个不同的频带下进行地震数据反演,求解不同尺度下反演所用目标函数,反演结果作为下一个尺度反演的初始模型,将层序界面约束和贝叶斯理论应用于反演过程中,从而保证了低频信息准确性的基础上进一步提高反演分辨率。针对垦西地区三合村凹陷河流相储层横向变化快、砂体厚度薄的特点,利用频率域分频多尺度反演方法进行储层预测,能有效识别横向变化快的薄互层砂体,清晰刻画出砂体边界,预测砂体分布范围,提升了叠后反演对薄储层的预测能力,成为河流相薄储层预测的有效手段,对于同样地质背景探区具有一定的借鉴意义。
Abstract:
The resolution of traditional acoustic impedance inversion methods is limited,and it is difficult to accurately identify thin reservoirs(sand layer thickness less than 10 m). The frequency division multiscale inversion method is to perform seismic data inversion in three different frequency bands to solve the objective function used in the inversion at different scales. The inversion result is used as the initial model for the next scale inversion,and the sequence interface constraint and Bayesian theory are applied in the inversion process,thereby ensuring the accuracy of low-frequency information and further improving the inversion resolution.Aiming at the characteristics of rapid lateral change of fluvial facies reservoirs and thin sandbodies in the Sanhecun Sag,Kenxi area,the frequency domain frequency-division multi-scale inversion method is used for reservoir prediction,which can effectively identify thin interbed sandbodies with fast lateral changes. In addition,this method can also clearly depict the sandbody boundary,predict the distribution range of sandbodies,and improve the prediction ability of post-stack inversion for thin reservoirs. The method has become an effective method for thin reservoir prediction of fluvial facies and has certain reference significance for exploration areas with the same geological background.

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备注/Memo

备注/Memo:
收稿日期:2020-12-21;改回日期:2021-04-06。
第一作者简介:朱宝衡(1992—),工程师,从事地震资料解释和储层反演方向工作。E-mail:zbhcupsin@163.com。
更新日期/Last Update: 2021-06-30