Methods of thin-bedded reservoir prediction based on seismic sedimentology

NI Changkuan, SU Mingjun, YUAN Cheng, LIU Huaqing, CUI Xiangli

doi:10.11698/PED.20210805

Petroleum Exploration and Development >

0 20220810 - 20220810

DOI: https://doi.org/10.11698/PED.20210805

Methods of thin-bedded reservoir prediction based on seismic sedimentology

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1. Research Institute of Petroleum Exploration and Development-Northwest (NWGI), PetroChina, Lanzhou 730020, China;
2. University of Electronic Science and Technology, Chengdu 611731, China

Received date: 2021-11-11

Revised date: 2022-04-20

Online published: 2022-05-30

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Abstract

Interference of thin layers in seismic reflections has great negative impact on thin-bedded reservoir prediction. To deal with this, we propose two novel methods in this paper that can improve the accuracy of thin-bedded reservoir prediction by suppressing the interference with the help of seismic sedimentology. (1) The first method, Minimum Interference Frequency (MIF) slicing, uses the amplitude versus frequency (AVF) attribute estimated by wavelet transform to find a constant seismic frequency by which the adjacent layers show the minimum influences on the stratal slice of target layer, and then an optimal slice can be obtained by dividing seismic data with the constant frequency mentioned above in frequency domain. (2) The second method, superimposed slicing, can suppress the interferences of thin beds by weighted stacking the multiple stratal slices of neighboring layers. The weight coefficients are estimated based on the spatial relation between the adjacent and target layers. The two proposed methods were used to predict the distribution of the target oil layers about 6m thick in three sets of thin-interbedded reservoirs of Triassic Kelamayi Formation in Fengnan area of Junggar Basin, Northwestern China. A comparison with drilling data and conventional stratal slices show that the two methods can predict the distribution of individual sand bodies in thin-bedded reservoirs more accurately.

Key words： thin-bedded reservoir; stratal slicing; seismic sedimentology; AVF; Triassic Kelamayi Formation; Junggar Basin

Cite this article

NI Changkuan, SU Mingjun, YUAN Cheng, LIU Huaqing, CUI Xiangli . Methods of thin-bedded reservoir prediction based on seismic sedimentology[J]. Petroleum Exploration and Development, 0 : 20220810 -20220810 . DOI: 10.11698/PED.20210805

References

[1] 凌云研究组. 地震分辨率极限问题的研究[J]. 石油地球物理勘探, 2004, 39(4): 435-442.
LING Yun Research Group. Study of seismic resolution limit[J]. Oil Geophysical Prospecting, 2004, 39(4): 435-442.
[2] 张佳佳, 印兴耀, 张广智, 等. 基于线性化岩石物理反演的物性参数预测方法[J]. 石油勘探与开发, 2020, 47(1): 57-64.
ZHANG Jiajia, YIN Xingyao, ZHANG Guangzhi, et al.Prediction method of physical parameters based on linearized rock physics inversion[J]. Petroleum Exploration and Development, 2020, 47(1): 57-64.
[3] WIDESS M B.How thin is a thin bed?[J]. Geophysics, 1973, 38(6): 1176-1180.
[4] 周路, 钟斐艳, 闫佳琛, 等. 四川盆地大猫坪地区二叠系长兴组生物礁气层叠前反演识别[J]. 石油勘探与开发, 2020, 47(1): 86-97.
ZHOU Lu, ZHONG Feiyan, YAN Jiachen, et al.Prestack inversion identification of organic reef gas reservoirs of Permian Changxing Formation in Damaoping area, Sichuan Basin, SW China[J]. Petroleum Exploration and Development, 2020, 47(1): 86-97.
[5] PURYEAR C I, CASTAGNA J P.Layer-thickness determination and stratigraphic interpretation using spectral inversion: Theory and application[J]. Geophysics, 2008, 73(2): R37-R48.
[6] 陈彦虎, 毕建军, 邱小斌, 等. 地震波形指示反演方法及其应用[J]. 石油勘探与开发, 2020, 47(6): 1149-1158.
CHEN Yanhu, BI Jianjun, QIU Xiaobin, et al.A method of seismic meme inversion and its application[J]. Petroleum Exploration and Development, 2020, 47(6): 1149-1158.
[7] MARFURT K J, KIRLIN R L.Narrow-band spectral analysis and thin-bed tuning[J]. Geophysics, 2001, 66(4): 1274-1283.
[8] 张军华, 陆文志, 王月英, 等. 薄层地球物理特征再认识[J]. 石油物探, 2004, 43(6): 541-546.
ZHANG Junhua, LU Wenzhi, WANG Yueying, et al.Research of geophysical characteristics in thin-beds[J]. Geophysical Prospecting for Petroleum, 2004, 43(6): 541-546.
[9] 孙夕平, 李劲松, 郑晓东, 等. 调谐能量增强法在石南21井区薄储集层识别中的应用[J]. 石油勘探与开发, 2007, 34(6): 711-717.
SUN Xiping, LI Jinsong, ZHENG Xiaodong, et al.Application of tuning- energy-enhanced method to thin bed identification in Block Shinan 21[J]. Petroleum Exploration and Development, 2007, 34(6): 711-717.
[10] 孙鲁平, 郑晓东, 首皓, 等. 薄层地震峰值频率与厚度关系研究[J]. 石油地球物理勘探, 2010, 45(2): 254-259, 271.
SUN Luping, ZHENG Xiaodong, SHOU Hao, et al.The studies on relationship between thin layer seismic peak frequency and its thickness[J]. Oil Geophysical Prospecting, 2010, 45(2): 254-259, 271.
[11] 徐伟慕, 郭平, 胡天跃. 薄互层调谐与分辨率分析[J]. 石油地球物理勘探, 2013, 48(5): 750-757.
XU Weimu, GUO Ping, HU Tianyue.Thin interbed tuning and resolution analysis[J]. Oil Geophysical Prospecting, 2013, 48(5): 750-757.
[12] ZENG H L, BACKUS M M, BARROW K T, et al.Stratal slicing; Part 1, realistic 3-D seismic model[J]. Geophysics, 1998, 63(2): 502-513.
[13] ZENG H L, HENRY S C, RIOLA J P.Strata slicing; Part II, real 3-D seismic data[J]. Geophysics, 1998, 63(2): 514-522.
[14] ZENG H L, BACKUS M M.Interpretive advantages of 90°-phase wavelets: Part 1—modeling[J]. Geophysics, 2005, 70(3): C7-C15.
[15] ZENG H L, BACKUS M M.Interpretive advantages of 90°-phase wavelets: Part 2—seismic applications[J]. Geophysics, 2005, 70(3): C17-C24.
[16] 曾洪流, 朱筱敏, 朱如凯, 等. 陆相坳陷型盆地地震沉积学研究规范[J]. 石油勘探与开发, 2012, 39(3): 275-284.
ZENG Hongliu, ZHU Xiaomin, ZHU Rukai, et al.Guidelines for seismic sedimentologic study in non-marine postrift basins[J]. Petroleum Exploration and Development, 2012, 39(3): 275-284.
[17] 曾洪流. 地震沉积学在中国: 回顾和展望[J]. 沉积学报, 2011, 29(3): 417-426.
ZENG Hongliu.Seismic sedimentology in China: a review[J]. Acta Sedimentologica Sinica, 2011, 29(3): 417-426.
[18] 苏明军, 倪长宽, 袁淑琴, 等. 利用地震切片技术分析沉积相的潜在风险与对策[J]. 天然气地球科学, 2014, 25(12): 2034-2039.
SU Mingjun, NI Changkuan, YUAN Shuqin, et al.Potential risks and countermeasures of sedimentary facies analysis by seismic slice[J]. Natural Gas Geoscience, 2014, 25(12): 2034-2039.
[19] 刘化清, 倪长宽, 陈启林, 等. 地层切片的合理性及影响因素[J]. 天然气地球科学, 2014, 25(11): 1821-1829.
LIU Huaqing, NI Changkuan, CHEN Qilin, et al.Rationality and influencing factors of strata slicing[J]. Natural Gas Geoscience, 2014, 25(11): 1821-1829.
[20] 倪长宽, 苏明军, 刘化清, 等. 有关地层切片应用条件和分辨率的探讨[J]. 天然气地球科学, 2014, 25(11): 1830-1838.
NI Changkuan, SU Mingjun, LIU Huaqing, et al.Discussion on application conditions and resolution of stratal slice[J]. Natural Gas Geoscience, 2014, 25(11): 1830-1838.
[21] ZENG H L. Predicting geometry and stacking pattern of thin beds by interpreting geomorphology and waveforms using sequential stratal-slices in the Wheeler domain[J]. Interpretation, 2015, 3(3): SS49-SS64.
[22] 李国发, 王亚静, 熊金良, 等. 薄互层地震切片解释中的几个问题: 以一个三维地质模型为例[J]. 石油地球物理勘探, 2014, 49(2): 388-393.
LI Guofa, WANG Yajing, XIONG Jinliang, et al.Phenomena in inter-bed reservoir interpretation on seismic slices: An example of 3D geological model[J]. Oil Geophysical Prospecting, 2014, 49(2): 388-393.
[23] LI G F, SACCHI M D, WANG Y J, et al.Characterization of interbedded thin beds using zero-crossing-time amplitude stratal slices[J]. Geophysics, 2015, 80(5): N23-N35.
[24] 朱筱敏, 董艳蕾, 曾洪流, 等. 中国地震沉积学研究现状和发展思考[J]. 古地理学报, 2020, 22(3): 397-411.
ZHU Xiaomin, DONG Yanlei, ZENG Hongliu, et al.Research status and thoughts on the development of seismic sedimentology in China[J]. Journal of Palaeogeography, 2020, 22(3): 397-411.

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