Journal of Jilin University(Earth Science Edition) ›› 2021, Vol. 51 ›› Issue (1): 266-276.doi: 10.13278/j.cnki.jjuese.20190291

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AVOA Inversion Methodof Fractured Reservoir Based on Petrophysical Model

Chen Xiangzhong1, Wang Bin2   

  1. 1. College of GeoExploration Science and Technology, Jilin University, Changchun 130026, China;
    2. College of Geophysics, Chengdu University of Technology, Chengdu 610059, China
  • Received:2019-12-20 Published:2021-02-02
  • Supported by:
    Supported by the National Natural Science Foundation of China (41774136)

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Abstract: At present, the P-wave anisotropy-based fracture prediction method is widely-used with relatively satisfactory performance. However, the accuracy of the conventional ellipse fitting method is affected by a series of factors, which leads to inaccurate inversion results of fracture density. In this study, the calculation method of reservoir fracture density in anisotropic media is derived according to the exact formula of Ruger equation. Firstly, the reflection coefficient of P-wave is calculated by using the functions of incidence angle, azimuth angle, Thomsen anisotropy and medium elastic parameters; then the tangential anisotropy coefficient of fractures in the reservoir to be measured is calculated according to the reflection coefficient of P-wave; finally, according to the anisotropy coefficient, the fracture density of the reservoir to be measured is calculated. The fracture density of Zhengbanan area in the Sichuan basin was calculated by using the fracture inversion results obtained from the actual P-wave AVOA data, and the results are consistent with the drilling data. It shows that this method can be used to determine the fracture development status and the fractured reservoir identification.

Key words: physical model of fractured rock, anisotropy, fracture density, P-wave AVOA, Sichuan basin

CLC Number: 

  • P618.13
[1] 王一刚,文应初,洪海涛,等. 川东北三叠系飞仙关组深层鲕滩气藏勘探目标[J]. 天然气工业,2004,24(12):5-9. Wang Yigang,Wen Yingchu,Hong Haitao,et al. Exploration Target of the Deep Oolitic Beach Gas Reservoir of the Triassic System Feixianguan Formation in Northeast Part of Sichuan Basin[J]. Natural Gas Industry,2004,24(12):5-9.
[2] 王兴志,张帆,马青,等. 四川盆地东部晚二叠世一早三叠世飞仙关期礁滩特征与海平面变化[J]. 沉积学报,2002,20(2):249-254. Wang Xingzhi,Zhang Fan,Ma Qing,et al. The Characteristics of Reef and Bank and the Fluctuation of Sea-Level in Feixianguan Period of Late Permian-Early Triassic, East Sichuan Basin[J]. Acta Sedimentologica Sinica,2002,20(2):249-254.
[3] 刘冉,霍飞,王鑫,等. 普光气田下三叠统飞仙关组碳酸盐岩储层特征及主控因素分析[J]. 中国石油勘探,2017,22(6):34-36. Liu Ran,Huo Fei, Wang Xin, et al. Characteristics and Main Controlling Factors of Lower Triassic Feixianguan Formation Carbonate Reservoir in Puguang Gas Field[J]. China Petroleum Exploration,2017,22(6):34-36.
[4] Ruger A,Tsvankin I. Using AVO for Fracture Detection:Analytic Basis and Practical Solutions[J]. The Leading Edge,1997,16(10):1429-1434.
[5] Tsvankin I. Reflection Moveout and Parameter Estimation for Horizontal Transverse Isotropy[J]. Geophysics,1997,62(2):614-629.
[6] Gray D,Head K. Fracture Detection in Manderson Field:A 3-D AVAZ Case History[J]. The Leading Edge,2000,19(11):1214-1221.
[7] Bachrach R,Sengupta M,Salama A,et al. Reconstruction of the Layer Anisotropic Elastic Parameter and High Resolution Fracture Characterization from P-Wave Data:A Case Study Using Seismic Inversion and Bayesian Rock Physics Parameter Estimation[J]. Geophysical Prospecting,2009,57:253-262.
[8] 镇晶晶,刘洋. 裂缝介质岩石物理模型研究综述[J]. 地球物理学进展,2011,26(5):1708-1716. Zhen Jingjing,Liu Yang. Review over Physical Model of Fractured Rock Medium[J]. Progress in Geophysics,2011,26(5):1708-1716.
[9] Shaw R K,Sen M K. Use of AVOA Data to Estimate Fluid Indicator in a Vertically Fractured Medium[J]. Geophysics,2006,71(3):15-24.
[10] Alhussain M,Sen M K. Quantitative Estimation of Fracture Parameters After Removing Anisotropic Overburden Effect[J]. SEG Technical Program Expanded Abstracts,2013,83:2443-2447.
[11] Narhari S R,Dashti Q,Silva J,et al. Application of Prestack Orthotropic AVAZ Inversion for Fracture Characterization of a Deep Carbonate Reservoir in Northern Kuwait[J]. The Leading Edge,2015,34(2):257-265.
[12] 卢明辉,彭立才,杨慧珠,等. 小生境遗传算法AVOA反演[J]. 石油地球物理勘探, 2006, 41(4):447-450. Lu Minghui,Peng Licai,Yang Huizhu,et al. Application of Niche Genetic Algorithm(NGA) on AVOA Inversion[J]. Oil Geophysical Prospecting, 2006, 41(4):447-450.
[13] 马中高,张国保,孙成龙. 多方位速度和AVOA同步分析[J]. 石油地球物理勘探,2009,44(增刊1):135-137,144. Ma Zhonggao,Zhang Guobao,Sun Chenglong. Multi-Azimuthal Velocity and AVOA Synchronous Analysis[J]. Oil Geophysical Prospecting,2009,44(Sup. 1):135-137,144.
[14] 薛姣,顾汉明,蔡成国,等. 基于等效介质模型的裂缝参数AVOA反演[J]. 石油地球物理勘探,2016,51(6):1171-1179. Xue Jiao,Gu Hanming,Cai Chengguo,et al. Estimation of Fracture Parameters from P-Wave AVOA Data Based on Equivalent Media Theory[J]. Oil Geophysical Prospecting,2016,51(6):1171-1179.
[15] 赵才顺,万欢,张昊,等.纵波方位各向异性正演模拟及叠前裂缝检测应用研究:以鄂尔多斯盆地致密砂岩气区块为例[J].地球物理学进展,2019,34(1):257-265. Zhao Caishun,Wan Huan,Zhang Hao,et al. Research Application of the P-Wave Anisotropy Forward Modeling and Pre-Stack Fracture Detection:Take the Tight Sandstone Gas Block in Ordos Basin as an Example[J]. Progress in Geophysics,2019,34(1):257-265.
[16] 吴珊珊,高刚,桂志先,等. 基于Ruger近似式预测裂缝型储层的可行性研究[J]. 煤田地质与勘探,2020,48(1):1-8. Wu Shanshan,Gao Gang,Gui Zhixian,et al. Ruger Approximate Formula-Based Prediction of Fractured Reservoir[J]. Coal Geology & Exploration,2020,48(1):1-8.
[17] 李博南,刘财,郭智奇. 基于等效介质模型和频变AVO反演的裂缝储层参数估算方法[J]. 吉林大学学报(地球科学版),2017,47(1):234-244. Li Bonan,Liu Cai,Guo Zhiqi. Estimation of Fractured Reservoir Parameters Based on Equivalent Media Model and Frequncy-Dependent AVO Inversion[J]. Journal of Jilin University (Earth Science Edition),2017,47(1):234-244.
[18] 罗腾,冯晅,郭智奇,等. 基于模拟退火粒子群优化算法的裂缝型储层各向异性参数地震反演[J]. 吉林大学学报(地球科学版),2019,49(5):1466-1476. Luo Teng,Feng Xuan,Guo Zhiqi,et al. Seismic Inversion of Anisotropy Parameters of Fractured Reservoirs by Simulated Annealing and Particle Swarm Optimization[J]. Journal of Jilin University (Earth Science Edition),2019,49(5):1466-1476.
[19] 曲寿利,季玉新,王鑫,等. 全方位P波属性裂缝检测方法[J]. 石油地球物理勘探,2001,36(4):390-397. Qu Shouli,Ji Yuxin,Wang Xin, et al. Seismic Method for Using Full-Azimuth P Wave Attribution to Detect Fracture[J]. Oil Geophysical Prospecting,2001,36(4):390-397.
[20] 赵思为,贺振华, 熊晓军,等. 方位P波裂缝检测技术在川东北裂缝型储层中的应用[J]. 石油地球物理勘探,2010,45(2):260-264. Zhao Siwei,He Zhenhua,Xiong Xiaojun, et al. Application of Azimuthal P-Wave Fracture Detection Technique in Fracture Reservoir in Northeast Sichuan China[J]. Oil Geophysical Prospecting,2010,45(2):260-264.
[21] 王洪求,杨午阳,谢春辉,等. 不同地震属性的方位各向异性分析及裂缝预测[J]. 石油地球物理勘探,2014,49(5):925-931. Wang Hongqiu,Yang Wuyang,Xie Chunhui, et al. Azimuthal Anisotropy Analysis of Different Seismic Attributes and Fracture Prediction[J]. Oil Geophysical Prospecting,2014,49(5):925-931.
[22] Schoenberg M. Elastic Wave Behavior Across Linear Slip Interface[J]. J Acoust Soc Amer,1980,68(4):1516-1521.
[23] Hsu C J,Schoenberg M. Elastic Waves Through a Simulated Fractured Medium[J]. Geophysics,1993,58(7):964-977.
[24] Ruger A. Variation of P-Wave Reflectivity with Offset and Azimuth in Anisotropic Media[J]. Geophysics,1998,63(3):935-947.
[25] Hudson J A. Overall Properties of a Cracked Solid[J]. Mathematical Proceedings of the Cambridge Philosophical Society,1980,88(1):371-384.
[26] Schoenberg M. Elastic Wave Behavior Across Linear Slip Interfaces[J]. Journal of the Acoustical Society of America,1980,68(5):1516-1521.
[27] Bakulin A,Grechka V,Tsvankin I. Estimation of Fracture Parameters from Reflection Seismic Data:Part 1:HTI Model due to a Single Fracture Set[J]. Geophysics,2000,65(6):1788-1802.
[28] 马永生,傅强,郭彤楼,等. 川东北地区普光气田长兴-飞仙关气藏成藏模式与成藏过程[J].石油实验地质,2005,27(5):455-461. Ma Yongsheng,Fu Qiang,Guo Tonglou,et al. Pool Forming Pattern and Process of the Upper Permian-Lower Triassic, the Puguang Gas Field, Northeast Sichuan Basin, China[J]. Petroleum Geology & Experiment,2005,27(5):455-461.
[29] 刘微,曾云贤,杨雨. 飞仙关组鲕滩储层常规地震相识别技术探索[J]. 西南石油大学学报,2007,29(2):30-33. Liu Wei,Zeng Yunxian,Yang Yu. Probe of Traditional Seismic Facies Identification Technology of Oolite Reservoir, Feixianguan Formation[J]. Journal of Southwest Petroleum University,2007,29(2):30-33.
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