[1]于建青,罗泽珍,郭田超,等.天然气藏地震响应的各向异性特征与裂缝预测模型[J].华南地震,2026,46(05):200-207.[doi:10.13512/j.hndz.2026.05.24]
　YU Jianqing,LUO Zezhen,GUO Tianchao,et al.Anisotropic Characteristics of Seismic Response and Fracture Prediction Model of Natural Gas Reservoir[J].,2026,46(05):200-207.[doi:10.13512/j.hndz.2026.05.24]
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天然气藏地震响应的各向异性特征与裂缝预测模型()

华南地震[ISSN:1006-6977/CN:61-1281/TN]

卷:
46
期数:
2026年05期
页码:
200-207
栏目:
海洋地球物理
出版日期:
2026-09-07

文章信息/Info

Title:
Anisotropic Characteristics of Seismic Response and Fracture Prediction Model of Natural Gas Reservoir
文章编号:
1001-8662（2026）05-0200-08
作者:
于建青; 罗泽珍; 郭田超; 李思锋; 谢云飞
陕西延长石油（集团）有限责任公司延长气田采气五厂，西安 710048
Author(s):
YU Jianqing; LUO Zezhen; GUO Tianchao; LI Sifeng; XIE Yunfei
Yanchang Gas Field Gas Production Plant 5, Shaanxi Yanchang Petroleum (Group ) Co., Ltd., Xi?an 710048, China
关键词:
天然气藏; 地震影响; 各向异性特征; 裂缝预测
Keywords:
Natural gas reservoir;  Earthquake influence;  Anisotropic characteristics;  Fracture prediction
分类号:
TE132
DOI:
10.13512/j.hndz.2026.05.24
文献标志码:
A
摘要:
在天然气藏勘探领域，精准分析地震响应各向异性特征并实现高精度裂缝预测是提升开发效率的关键，为此，提出了天然气藏地震响应的各向异性特征与裂缝预测模型。基于地震、测井及地质勘探等多源数据，采用加权平均融合策略实现数据深度整合，为后续分析提供数据基础。计算地震波在天然气藏介质中的声弹性刚度，并结合迭代运算技术，将储层表面检波地震数据动态加载为多轮模拟震源信号，构建包含表面多次波的地震波场传播方程，进而生成地震波波场快照。在应力连续与位移连续的严格边界条件下，系统推导弹性界面处地震波的入射与透射系数解析表达式。针对不同裂缝类型的储层介质模型，通过拟合各向异性速度函数，量化地震响应的速度与振幅特征，提取了地震响应各向异性特征。在此基础上，将各向异性特征作为关键反演参数，结合优化后的叠前道集数据，构建裂缝预测模型，实现裂缝密度的精准预测。工程实例验证表明，所提方法在天然气藏储层分析中展现出卓越性能，各向异性特征参数计算结果偏差低于2.0，裂缝密度预测平均误差仅2.1%，充分证明了其科学性与实用性，为天然气藏勘探提供了高效、精准的技术解决方案。
Abstract:
In the field of natural gas reservoir exploration, accurate analysis of anisotropic characteristics of seismic response and high-precision fracture prediction are the key to improve development efficiency. Therefore, an aniso‐tropic characteristics of seismic response and fracture prediction model of natural gas reservoir is proposed. Based on multi-source data such as seismic, well logging and geological exploration, the weighted average fusion strategy was used to realize in-depth data integration, providing a data foundation for subsequent analysis. The acoustic elas‐tic stiffness of seismic wave in natural gas reservoir media was calculated. Combined with iterative operation tech‐nology, the seismic data of reservoir surface detection were dynamically loaded into multi-round simulated source signals, and a seismic wave field propagation equation containing surface multiples was constructed to generate snap‐shots of seismic wave field. Under the strict boundary conditions of stress and displacement continuity, the analytical expressions of the incidence and transmission coefficients of seismic waves at the elastic interface were systematical‐ly derived. For reservoir medium models with different fracture types, the velocity and amplitude characteristics of seismic responses were quantified by fitting anisotropic velocity functions, and the anisotropic characteristics of seis‐mic responses were extracted. On this basis, the anisotropic characteristics were taken as key inversion parameters, and a fracture prediction model was constructed combined with optimized pre-stack gather data to realize accurate prediction of fracture density. Engineering case verifications show that the proposed method exhibits excellent perfor‐mance in natural gas reservoir analysis. The calculation deviation of anisotropic characteristic parameters is less than 2.0, and the average error of fracture density prediction is only 2.1%, which fully verifies its scientificity and practicability, and provides an efficient and accurate technical solution for natural gas reservoir exploration.

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备注/Memo

备注/Memo:
收稿日期：2025-09-25
作者简介：于建青（1980-），男，高级工程师，主要研究方向为天然气地质。E-mail: shengliwym@163.com
更新日期/Last Update: 2026-09-20