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Matching pursuit algorithm-based strong seismic reflection separation method under the constraints of seismic wave frequency of overlying strata |
LI Dong1( ), ZHU Bo-Hua2( ) |
1. Nanjing Engineering Branch, Jiangsu Union Technical Institute, Nanjing 211135, China 2. Sinopec Geophysical Research Institute Co.,Ltd., Nanjing 211103, China |
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Abstract The strong seismic reflection separation method based on the matching pursuit algorithm has yielded encouraging results in practical applications.However,this method faces some challenges in the selection of key parameters and has been scarcely investigated.This study thoroughly investigated the optimization of frequency parameters in the method thereof and established a technical process.First,this study analyzed the spatial variations in the frequency of seismic waves from the perspective of seismic wave propagation and attenuation and proposed a matching pursuit algorithm under the constraints of frequency.Then,this study designed corresponding geological models,conducted frequency optimization tests,and separated the strong seismic reflections using the matching pursuit algorithm under the constraints of the seismic wave frequency of the overlying strata.The test results verify the accuracy and effectiveness of the strong reflection separation method.Finally,the strong reflection separation method was applied to the fracture-vug carbonate reservoirs in the Tarim Basin.The great application effects indicate that the separation method can separate strong reflection events more reasonably and effectively,making the characteristics of underlying small-sized fractures and vugs more significant.This study further optimizes the strong reflection separation method based on matching pursuit and improves the adaptability and application performance of seismic data,thus laying a better foundation for further promotion and application of this method.
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Received: 18 October 2022
Published: 27 October 2023
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Corresponding Authors:
ZHU Bo-Hua
E-mail: lidong_dearl@163.com;zhubohua1987@163.com
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Schematic model of seismic wave propagation
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Geological model 1
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Morlet wavelet(a) and main frequency value(b) for seismic forward modelling
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Profile by seismic forward modelling
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Result by conventional strong seismic reflection separation method
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Result by frequency constraint strong seismic reflection separation method
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Reflection waveform comparison of reservoir
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Geological model 2
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Profile by seismic forward modelling
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Result by conventional strong seismic reflection separation method
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Result by frequency constraint strong seismic reflection separation method
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Reflection waveform comparison of reservoir
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Forward simulation of lateral dominant frequency variation
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Result by conventional strong seismic reflection separation method
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Result by frequency constraint strong seismic reflection separation method
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Reflection waveform comparison of reservoir
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Seismic profile of Ordovician fracture-cavity reservoir in Tarim Basin
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Plane attribute extraction of the study area
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Frequency attribute map of target layer
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Amplitude attribute comparison of different strong reflection separation method
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Seismic profile comparison of different strong reflection separation method
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[1] |
张军华, 刘振, 刘炳杨, 等. 强屏蔽层下弱反射储层特征分析及识别方法[J]. 特种油气藏, 2012, 19(1):23-26.
|
[1] |
Zhang J H, Liu Z, Liu B Y, et al. Analysis and identification of reservoir characteristics of weak reflectors under strong shielding layer[J]. Special Oil & Gas Reservoirs, 2012, 19(1):23-26.
|
[2] |
秦雪霏, 李巍. 大牛地气田煤系地层去煤影响储层预测技术[J]. 吉林大学学报:地球科学版, 2011, 44(3):1048-1054
|
[2] |
Qin X F, Li W. Research of identification and trimming of coal-bed interference in Daniudi gasfield[J]. Journal of Jilin University:Earth science edition. 2011, 44 (3):1048-1054.
|
[3] |
马灵伟, 杨勤勇, 顾汉明, 等. 基于随机缝洞介质理论模拟塔中北坡储层的地震响应[J]. 石油地球物理勘探, 2016, 51(6):1119-1127.
|
[3] |
Ma L W, Yang Q Y, Gu H M, et al. Simulation of reservoir seismic response in the northern slope of the middle Tarim Basin with random fracture-cavern media model[J]. Oil Geophysical Prospecting, 2016, 51(6):1119-1127.
|
[4] |
谢春临, 黄伟, 关晓巍, 等. 波形分解技术在强反射背景下薄砂层识别中的应用[J]. 石油地球物理勘探, 2017, 52(3):516-520.
|
[4] |
Xie C L, Huang W, Guan X W, et al. Thin sand identification under strong reflection with volume-based waveform decomposition[J]. Oil Geophysical Prospecting, 2017, 52(3):516-520.
|
[5] |
Wang Y H. Multichannel matching pursuit for seismic trace decomposition[J]. Geophysics, 2010, 75(4):61-66.
|
[6] |
李海山, 杨午阳, 田军, 等. 匹配追踪煤层强反射层分离方法[J]. 石油地球物理勘探, 2014, 49(5):866-870.
|
[6] |
Li H S, Yang W Y, Tian J, et al. Coal seam strong reflection separation with matching pursuit[J]. Oil Geophysical Prospecting, 2014, 49(5):866-870.
|
[7] |
韩站一, 宋炜, 李继光, 等. 利用字典学习快速匹配追踪压制煤层强反射[J]. 石油地球物理勘探, 2022, 57(5):1156-1163.
|
[7] |
Han Z Y, Song W, Li J G, et al. Strong coal-seam reflection suppression by fast matching pursuit based on dictionary learning[J]. Oil Geophysical Prospecting, 2022, 57(5):1156-1163.
|
[8] |
朱博华, 向雪梅, 张卫华. 匹配追踪强反射层分离方法及应用[J]. 石油物探, 2016, 55(2):280-287.
|
[8] |
Zhu B H, Xiang X M, Zhang W H. Strong refection horizons separation based on matching pursuit algorithm and its application[J]. Geophysical Prospecting for Petroleum, 2016, 55(2):280-287.
|
[9] |
印兴耀, 许璐, 宗兆云, 等. 基于局部频率约束的动态快速匹配追踪方法[J]. 中国石油大学学报:自然科学版, 2018, 42(6):59-66.
|
[9] |
Yin X Y, Xu L, Zong Z Y, et al. Dynamic and fast matching pursuit method based on local frequency constraints[J]. Journal of China University of Petroleum:Edition of Natural Science, 2018, 42(6):59-66.
|
[10] |
许璐, 吴笑荷, 张明振, 等. 基于局部频率约束的匹配追踪强反射识别与分离方法[J]. 石油地球物理勘探, 2019, 54(3):587-593.
|
[10] |
Xu L, Wu X H, Zhang M Z, et al. Strong reflection identification and separation based on the local-frequency-constrained dynamic matching pursuit[J]. Oil Geophysical Prospecting, 2019, 54(3):587-593.
|
[11] |
Zhu B H, Wang M, Wei S M, et al. An improved algorithm for strong seismic reflection separation of thin coal seam[C]// 81st EAGE Conference and Exhibition, 2019.
|
[12] |
吴笑荷. 强反射背景下不整合圈闭储层描述方法——以济阳坳陷长堤地区中生界为例[J]. 中国石油勘探, 2018, 23(4):123-130.
|
[12] |
Wu X H. Description technology for unconformity trap reservoirs with strong seismic reflections:A case of the Mesozoic unconformity reservoir in Changdi area,Jiyang depression[J]. China Petroleum Exploration, 2018, 23(4):123-130.
|
[13] |
刘杰, 张忠涛, 刘道理, 等. 强反射背景下沉积体边界检测及流体识别方法[J]. 石油物探, 2016, 55(1):142-149.
|
[13] |
Liu J, Zhang Z T, Liu D L, et al. Sediment boundary identification and fluid detection for the seismic data with strong background reflections[J]. Geophysical Prospecting for Petroleum, 2016, 55(1):142-149.
|
[14] |
张生强, 张志军, 李尧, 等. 基于地震相位分解的自适应强反射分离方法[J]. 石油地球物理勘探, 2021, 56(6):1236-1243.
|
[14] |
Zhang S Q, Zhang Z J, Li Y, et al. Adaptive strong reflection separation method based on seismic phase decomposition[J]. Oil Geophysical Prospecting, 2021, 56(6):1236-1243
|
[15] |
Zhu B H, Xiang X M, Gao H Q, et al. Application of strong seismic reflection separation based on matching pursuit algorithm in Tarim basin,China[C]// SEG Technical Program,Expanded Abstract, 2019.
|
[16] |
Mallat S G, Zhang Z. Matching pursuits with time-frequency dictionaries[J]. IEEE Transactions on Signal Processing, 1993, 41(12):3377-3415.
|
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