To improve the seismic interpretation accuracy and seismic data information extraction capacity of deep-water sedimentary formation, seismic forward modeling was conducted on the slope deposits with canyons. The seismic reflection characteristics of cleuch, channels and canyons dominated by turbidity flow and block transposition are analyzed. The fine forward modeling of the natural levee complex of channels is carried out. The comprehensive analysis suggests that the width-depth ratio of the cleuch dominated by block transport is low and symmetrically filled, and the interior is mainly chaotic weak amplitude reflections. While the canyons dominated by turbidity flow has a large width and depth, the interior of which is an undulating high amplitude reflections; the smaller the angle between the top and bottom interfaces of the formation, the greater the error between the true pinch-out point and the seismic reflection pinch-out point; the decrease in thickness of the natural levee complex of channels results in a lower seismic reflection frequency and enhanced amplitude; the amplitude of the channel when it is saturated with water is stronger than that when it is saturated with gas. Hence the seismic response characteristics of multi-type deep-water sedimentary bodies with different morphological attributes are further clarified, which can effectively improve the accuracy of comprehensive interpretation of seismic data in deep-water sedimentary formations.
Shen Xiangcun
,
Fan Weifeng
,
Jiang Zhongzheng
,
Luo Shaohui
,
Guo Wei
,
Wan Li
. Application of Seismic Forward Modeling in the Study of Deep-water Sedimentary Formation[J]. Special Oil & Gas Reservoirs, 2024
, 31(4)
: 36
-43
.
DOI: 10.3969/j.issn.1006-6535.2024.04.005
[1] SHANMUGAM G.Deep-water processes and facies models: implications for sandstone petroleum reservoirs[M].Amsterdam, The Netherlands: Elsevier,2006:476-482.
[2] PIERCE A D.Acoustics: an introduction to its physical principles and applications[M].Cham,Switzerland:Springer, 2019:43-60.
[3] SCHWAB A,CRONIN B,FERREIRA H.Seismic expression of channel outcrops:offset stacked versus amalgamated channel systems[J].Marine and Petroleum Geology,2007, 24(6-9):504-514.
[4] PRATSON L F,RYAN W B,MOUNTAIN G S,et al.Submarine canyon initiation by downslope-eroding sediment flows:evidence in late Cenozoic strata on the New Jersey continental slope[J].Geological Society of America Bulletin,1994,106(3):395-412.
[5] BAKKE K, GIELBERG J, PETERSEN S A.Compound seismic modelling of the Ainsa II turbidite system,Spain:application to deep-water channel systems offshore Angola[J].Marine and Petroleum Geology, 2008, 25(10): 1058-1073.
[6] 朱多林,白超英.基于波动方程理论的地震波场数值模拟方法综述[J].地球物理学进展,2011,26(5):1588-1599.
ZHU Duolin,BAI Chaoying.Review on the seismic wavefield forward modelling[J].Progress in Geophysics,2011,26(5):1588-1599.
[7] 张永刚.地震波场数值模拟方法[J].石油物探, 2003,42(2):143-148.
ZHANG Yonggang,Numerical simulation method of seismic wave field[J].Geophysical Prospecting for Petroleum,2003,42(2):143-148.
[8] 王东鹤,陈祖斌,刘昕,等.地震波射线追踪方法研究综述[J].地球物理学进展, 2016,31(1): 344-353.
WANG Donghe,CHEN Zubin,LIU Xin,et al.Review of the seismic ray tracing method[J].Progress in Geophysics,2016,31(1):344-353.
[9] 宋维琪,杨晓东.基于射线追踪的微地震多波场正演模拟[J].地球物理学进展,2012, 27(4):1501-1508.
SONG Weiqi,YANG Xiaodong.The multi-wave field forward simulation of micro-seismic based on ray tracing[J].Progress in Geophysics,2012,27(4):1501-1508.
[10] 皮红梅,蒋先艺,刘财,等.波动方程数值模拟的三种方法及对比[J].地球物理学进展,2009, 24(2):391-397.
PI Hongmei,JIANG Xianyi,LIU Cai,et al.Three methods of wave equation forward modeling and comparisons[J].Progress in Geophysics,2009,24(2):391-397.
[11] SALLES T,DUCLAUX G.Combined hillslope diffusion and sediment transport simulation applied to landscape dynamics modelling[J].Earth Surface Processes and Landforms,2015,40(6): 823-839.
[12] HAMILTON E L.Prediction of deep-sea sediment properties:state-of-the-art[J].Deep-sea sediments: physical and mechanical properties,1974:1-43.
[13] DEPTUCK M E,STEFFENS G S,BARTON M,et al.Architecture and evolution of upper fan channel-belts on the Niger Delta slope and in the Arabian Sea[J].Marine and Petroleum Geology,2003,20(6-8):649-676.
[14] SYLVESTER Z,PIRMEZ C,CANTELLI A.A model of submarine channel-levee evolution based on channel trajectories: implications for stratigraphic architecture[J].Marine and Petroleum Geology,2011,28(3):716-727.
