潜山油气藏是辽河坳陷重点勘探领域之一,其储集空间以微裂缝、微孔隙为主,受此影响,潜山内幕的地震资料波场复杂、反射特征不清,传统的反射波成像精度低,不能满足实际需求,制约了对潜山内部结构的认识和潜山油气勘探。针对该问题,提出一种全新的散射波成像技术,该技术主要通过压制地震反射波能量、加强散射波能量,实现地震资料更高分辨率的成像;该技术能够对潜山内部的地震弱散射信号成像,进而实现对复杂地质背景下潜山内部裂缝细节的精细研究和描述,并应用于辽河油田曙光潜山带复杂构造研究中,取得了明显效果,可为同类地震资料处理提供一定的借鉴。
Buried hill reservoir s are considered as one of the major hydrocarbon exploration areas in the Liaohe Depression, and the corresponding reservoir space is dominated by microfracture and micropore. The seismic data inside the buried hill is characterized by complicated wave fields and unclear reflections. Traditional reflected wave imaging is limited in the internal structure identification and buried-hill hydrocarbon exploration. A new scattered wave imaging technology was proposed to realize high-resolution seismic data imaging by suppressing seismic reflection wave energy and strengthening scattered wave energy. The weak seismic scattered signal inside the buried-hill can be imaged to characterize the fracture properties within the buried hill under complex geological setting. This technology was successfully applied to characterize the complex structures of Shuguang buried hill zone in Liaohe Oilfield, which could also provide certain reference for the similar seismic data processing.
[1] 沈鸿雁.地震散射波成像技术研究[D].西安:长安大学,2010.
SHEN Hongyan.Study on seismic scattering wave imagination[D].Xi'an:Chang'an University,2010.
[2] 陈可洋,杨微,吴清岭,等.地震反射波与散射波波场分离方法初探[J].岩性油气藏,2013,25(2):76-81.
CHEN Keyang,YANG wei,WU Qingling,et al. Preliminary study on wave field separation of seismic reflection wave and scattered wave[J].Lithologic Reservoirs,2013,25(2):76-81.
[3] DELL S,GAJEWSKI D. Common-reflection-surface-based workflow for diffraction imaging [J].Geophysics,2011,76(5):187-195.
[4] KOREN Z,RAVVE I,LEVY R.Specular-diffraction imaging by directional angle decomposition[C].SEG-2010-3268,2010:1-5.
[5] MOSER T J,HOWARD C B.Diffraction imaging in depth[J].Geophysical Prospecting,2008,56(5):627-641.
[6] 陈从希,黄江河,黄明华,等.提高春光探区地震资料信噪比和分辨率方法研究[J].石油地质与工程,2018,32(6):56-58.
CHEN Congxi, HUANG Jianghe, HUANG Minghua, et al. Study on methods to improve the signal-to-noise ratio and resolution of seismic data in Chunguang Exploration Area[J]. Petroleum Geology & Engineering,2018,32(6):56-58.
[7] KHAIDUKOV V,LANDA E,MOSER T J.Diffraction imaging by focusing-defocusing: an outlook on seismic super-resolution[J].Geophysics,2004,69(6):1478-1490.
[8] TANER M T,FORMEL S,LANDA E.Separation and imaging of seismic diffractions using plane wave decomposition[C].SEG-2006-2401,2006:2401-2407.
[9] 柳世光,崔晓娟,高源.辽河拗陷低潜山地震资料处理技术[J].石油地球物理勘探,2005,40(3):283-288.
LIU Shiguang,CUI Xiaojuan,GAO yuan.Seismic data processing technology of lower buried-hills in Liaohe Depression[J].Oil Geophysical Prospecting,2005,40(3):283-288.
[10] 王延光.地震叠前深度偏移技术进展及应用问题与对策[J].油气地质与采收率,2017,24(4):1-7.
WANG Yanguang.Progress of seismic prestack depth migration and its application problems and solution[J].Petroleum Geology and Recovery Efficiency,2017,24(4):1-7.
[11] 郭平.近地表吸收补偿在辽河油区地震资料中的应用[J].特种油气藏,2015,22(2):31-34.
GUO Ping.Application of near surface absorption compensation technology in seismic data of Liaohe Oil Region[J].Special Oil & Gas Reservoirs,2015,22(2):31-34.
[12] 王兆旗,范国章,杨存,等.孟加拉湾浅层气发育区地震资料处理关键技术[J].断块油气田,2019,26(5):590-595.
WANG Zhaoqi,FAN Guozhang,YANG Cun,et al.Key technologies of seismic data processing for shallow gas developed area in Bay of Bengal[J].Fault-Block Oil & Gas Field,2019,26(5):590-595.
[13] 单俊峰,张菊香,张卓,等.辽河断陷盆地西部凹陷西斜坡古潜山油气成藏条件研究[J].特种油气藏,2004,11(4):39-42.
SHAN Junfeng,ZHANG Juxiang,ZHANG zhuo,et al. Buried hill reservoir forming conditions in the west slope of western sag, Liaohe Fault Basin [J].Special Oil & Gas Reservoirs,2004,11(4):39-42.
[14] 陈从希,黄江河,黄明华,等.提高春光探区地震资料信噪比和分辨率方法研究[J].石油地质与工程,2018,32(6):56-58.
CHEN Congxi,HUANG Jianghe,HUANG Minghua,et al.Study on methods to improve the signal-to-noise ratio and resolution of seismic data in Chunguang exploration area[J].Petroleum Geology & Eenineering,2018,32(6):56-58.
[15] 程四洪,夏振宇,刘天琳.变质岩潜山内幕裂缝表征及储层预测研究[J].地球物理学进展,2017,32(2):596-602.
CHENG Sihong,XIA Zhenyu,LIU Tianlin.Research of metamorphic buried hill fracture characterization and reservoir prediction[J].Progress in Geophysics,2017,32(2):596-602.
[16] 沈鸿雁,李庆春,边建民.基于点散射地震－地质模型的地震散射波成像[J].桂林理工大学学报,2014,34(4):615-622.
SHEN Hongyan,LI Qingchun,BIAN Jianmin.Seismic diffraction imaging based on seismic-earth model of point scattering [J].Journal of Guilin University of Technology,2014,34(4):615-622.
[17] 刘恒,刘洪,高星,等.散射波叠前时间偏移成像[J].石油地球物理勘探,2012,47(4):668-673.
LIU heng,LIU hong,GAO xing,et al. Scattered wave pre-stack time migration[J].Oil Geophysical Prospecting,2012,47(4):668-673.
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