Lithologic Reservoirs ›› 2018, Vol. 30 ›› Issue (6): 83-88.doi: 10.12108/yxyqc.20180610

Previous Articles     Next Articles

Well constrained anisotropic velocity model building based on full-azimuth angle gathers and imaging

LIU Wenqing, WANG Xiao, HU Shuhua, ZHANG Tao, JIN Baozhong   

  1. PetroChina Research Institute of Petroleum Exploration & Development-Northwest, Lanzhou 730020, China
  • Received:2018-03-19 Revised:2018-09-22 Online:2018-11-16 Published:2018-11-16

PDF (PC)

445

Abstract: For TTI media anisotropic imaging, accurate anisotropy parameter model building is very important. Anisotropy must be considered in seismic imaging with the rapidly development of wide-azimuth acquisition. A set of joint model building method based on well data and full-azimuth angle gathers were proposed. First, Walkaway VSP data and well data can be used to obtain the anisotropy parameters δ volume. Full azimuth angle gathers can be used to obtain RMO information on the anisotropy. Based on well data and full-azimuth angle gathers, anisotropic parameters ε and δ iterative optimization process were established. The proposed solution was tested on field seismic data and the results showed favorable effect in fracture detection and seismic imaging which proved the applicability and effectiveness of the proposed method.

Key words: full-azimuth angle gathers, anisotropic parameters, well data, velocity model building

CLC Number: 

  • P631.4
[1] MACKAY S, ABMA R. Imaging and velocity estimation with depth-focusing analysis. Geophysics, 1992, 57(2):1608-1623.
[2] MACKAY S, ABMA R. Depth-focusing analysis using a wavefront-curvature criterion. Geophysics, 1993, 58(1):1148-1156.
[3] AL-YAHYA K. Velocity analysis by iteration profile migration. Geophysics, 1989, 54(1):718-729.
[4] MASHER C, JIN S, FOSTER D. Migration velocity analysis using common angle image gathers. SEG 71st Annual International Meeting, 2001:889-892.
[5] 刘文卿, 王西文, 刘洪, 等.盐下构造速度建模与逆时偏移成像研究及应用.地球物理学报, 2013, 56(2):612-625. LIU W Q, WANG X W, LIU H, et al. Application of velocity modeling and reverse time migration to subsalt structure. Chinese Journal Geophysics, 2013, 56(2):612-625.
[6] BIONDO B, SYMES W. Angle-domain common image gathers for migration velocity analysis by wavefield continuation imaging. Geophysics, 2004, 69(1):1283-1298.
[7] CANNING A, MALKIN A. Azimuthal AVA analysis using full azimuth 3D angle gathers. 79th SEG Exposition and Annual Meeting, Houston,2009.
[8] 陈可洋, 吴清岭, 范兴才, 等.地震波逆时偏移中不同域共成像点道集偏移噪声分析.岩性油气藏, 2014, 26(2):118-124. CHEN K Y, WU Q L, FAN X C, et al. Seismic wave reversetime migration noise analysis within different common imaging point gathers. Lithologic Reservoirs, 2014, 26(2):118-124.
[9] 王华忠, 冯波, 李辉, 等.各种速度分析与反演方法的对比研究. 岩性油气藏, 2012, 24(5):1-18. WANG H Z, FENG B, LI H, et al. Comparison among velocity analysis and inversion methods. Lithologic Reservoirs, 2012, 24(5):1-18.
[10] 陈生昌, 曹景忠, 马在田. 叠前地震数据的平面波深度偏移法.地球物理学报, 2003, 46(6):821-826. CHEN S C, CAO J Z, MA Z T. A method of plane wave depth migration for pre -stack seismic data. Chinese Journal of Geophys, 2003, 46(6):821-826.
[11] DE BRUIN C G M, WAPENAAR C P A, BERKHOUT A J. Angle-dependent reflectivity by means of prestack migration. Geophysics, 1990, 55(9):1223-1234.
[12] XU S, CHAURIS H, LAMBARE G, et al. Common angle image gather:a strategy for imaging complex media. SEG Extended Abstracts, 1998:1538-1541.
[13] XU S, CHAURIS H, LAMBARÉG, NOBLE M. Common angle migration:a strategy for imaging complex media. Geophysics, 2001, 66(6):1877-1894.
[14] PRUCHA M, BIONDI B, SYMES W. Angel-domain common image gathers by wave-equation migration. SEG Extended Abstracts, 2001:824-827.
[15] SAVA P, FOMEL S. Angle domain common image gathers by wave field continuation methods. Geophysics, 2003, 68(3):1065-1074.
[16] 陈凌, 吴如山, 王伟君.基于Gabor-Daubechies小波束叠前深度偏移的角度域共成像道集. 地球物理学报, 2004, 47(5):876-884. CHEN L, WU R S, WANG W J. Common angle image gathers obtained from Gabor-Daubechies beamlet prestack depth migration. Chinese Journal of Geophysics, 2004, 47(5):876-884.
[17] 陈生昌, 马在田, WU Rushan.波动方程角度域共成像道集.地球科学, 2007, 32(4):569-573. CHEN S C, MA Z T, WU R S. Angle domain common imaging gathers for wave equation. Earth Science, 2007, 32(4):569-573.
[18] MASMOUDI N, ALKHALIFAH T. Multi-parameters scanning in HTI media. SEG Extended Abstracts, 2014:448-452.
[19] WHITMORE N D, CRAWLEY S, ZHU C G. Dynamic angle and azimuth decomposition of RTM images. SEG Extended Abstracts, 2014:3801-3805.
[20] KOREN Z, SHENG X, AND KOSLOFF D. Target-oriented common-reflection angle migration. SEG Expanded Abstracts, 2002:1196-1199.
[21] KOREN Z, RAVVE A, KOSLOFF D. Local angle domain in seismic imaging. SEG Extended Abstracts, 2007:287.
[22] KOREN Z, RAVVE L, AND LEVY D. Sepcular-diffraction imaging from directional angel decomposition. EAGE Extended Abstracts, 2009:G045.
[23] KOREN Z, RAVVE E, RAGOZA A, et al. Full azimuth angle domain imaging. SEG Expanded Abstracts, 2009:2221-2225.
[24] KOREN Z, RAVVE L. Full-azimuth subsurface angle domain wavefield decomposition and image Part I:Directional and refection image gather. Geophysics, 2011, 76:S1-S13.
[25] BLIAS E. Interval anisotropic parameter estimation above the receiver array in walkaway and 3 D VSP data. SEG Extended Abstracts, 2010.
[26] ZHOU C G, LIU Z J, WHITMORE N D. Anisotropic model building with well control. SEG Extended Abstracts,2014:4675-4679.
[27] 边立恩, 于茜, 谷志猛, 等.低速异常带平均速度场建模方法研究.岩性油气藏, 2015, 27(3):122-126. BIAN L E, YU Q, GU Z M, et al. Research on mean velocity field modeling method for low velocity anomaly zone:a case study from Q oilfield,Bohai. Lithologic Reservoirs, 2015, 27(3):122-126.
[28] 韩令贺, 胡自多, 冯会元, 等.井震联合网格层析各向异性速度建模研究及应用.岩性油气藏, 2018, 30(4):91-97. HAN L H,HU Z D,FENG H Y,et al. Grid tomography based on well-to-seismic integration in anisotropic velocity modeling and its application. Lithologic Reservoirs, 2018, 30(4):91-97.
[29] THOMSEN L. Weak elastic anisotropy. Geophysics, 1986, 51:1954-1966.
[1] LI Zaiguang,LI Lin. Automatic mapping based on well data [J]. Lithologic Reservoirs, 2007, 19(2): 84-89.
Viewed
Full text


Abstract

Cited
  Shared   
  Discussed   
[1] . [J]. Lithologic Reservoirs, 2022, 34(2): 0 .
[2] LI Zaiguang,LI Lin. Automatic mapping based on well data[J]. Lithologic Reservoirs, 2007, 19(2): 84 -89 .
[3] CHENG Yuhong,GUO Yanru,ZHENG Ximing,FANG Naizhen,MA Yuhu. The interpretation method and application effect determined by multiple seismic and logging factors[J]. Lithologic Reservoirs, 2007, 19(2): 97 -101 .
[4] LIU Juntian,JIN Zhenjia,LI Zaiguang,TAN Xinping,GUO Lin,WANG Bo,LIU Yuxiang. Controlling factors for lithologic hydrocarbon reservoirs and petroleum prospecting target in Xiaocaohu area , Taibei Sag[J]. Lithologic Reservoirs, 2007, 19(3): 44 -47 .
[5] SHANG Changliang, FU Shouxian. Application of 3D seismic survey in loess tableland[J]. Lithologic Reservoirs, 2007, 19(3): 106 -110 .
[6] WANG Changyong, ZHENG Rongcai, WANG Jianguo, CAO Shaofang, Xiao Mingguo. Sedimentary characteristics and evolution of Badaowan Formation of Lower Jurassic in northwest margin of Junggar Basin[J]. Lithologic Reservoirs, 2008, 20(2): 37 -42 .
[7] WANG Ke1 LIU Xianyang, ZHAO Weiwei, SONG Jianghai, SHI Zhenfeng, XIANG Hui. Char acter istics and geological significance of seismites of Paleogene in Yangxin Subsag of J iyang Depr ession[J]. Lithologic Reservoirs, 2008, 20(2): 54 -59 .
[8] SUN Hongbin, ZHANG Fenglian. Structural-sedimentary evolution char acter istics of Paleogene in Liaohe Depr ession[J]. Lithologic Reservoirs, 2008, 20(2): 60 -65 .
[9] LI Chuanliang. Can uplift r esult in abnormal high pr essur e in formation?[J]. Lithologic Reservoirs, 2008, 20(2): 124 -126 .
[10] WEI Qinlian，ZHENG Rongcai，XIAO Ling，MA Guofu，DOU Shijie，TIAN Baozhong. Study on horizontal heterogeneity in Serie Inferiere of Triassic in 438b block , Algeria[J]. Lithologic Reservoirs, 2009, 21(2): 24 -28 .
TRENDMD:

Copyright © 2018 Lithologic Reservoirs

Support by Beijing Magtech support@magtech.com.cn