Lithologic Reservoirs ›› 2024, Vol. 36 ›› Issue (5): 111-121.doi: 10.12108/yxyqc.20240511

• PETROLEUM EXPLORATION • Previous Articles     Next Articles

Lithofacies classification of tight sandstone based on Bayesian Facies-AVO attributes：A case study of the first member of Jurassic Shaximiao Formation in central Sichuan Basin

CHEN Kang1, DAI Juncheng1, WEI Wei1, LIU Weifang2, YAN Yuanyuan1, XI Cheng1, LYU Yan1, YANG Guangguang1   

  1. 1. Research Institute of Exploration and Development, PetroChina Southwest Oil & Gas Field Company, Chengdu 610041, China;
    2. GeoSoftware Technology Services(Beijing)Co., Ltd., Beijing 100004, China
  • Received:2024-02-01 Revised:2024-04-10 Online:2024-09-01 Published:2024-09-04

PDF (PC)

194

Abstract: In seismic exploration，high-velocity or low-velocity tight sandstone reservoirs are often characterized by complex seismic response and strong heterogeneity，and it is difficult to establish a low-frequency model in inversion. With the constraints of AVO intercept and gradient attribute based on Bayesian classification and porosity， the lithofacies of the tight sandstone of Jurassic Shaximiao Formation in central Sichuan Basin was classified. The results show that：（1）Based on elastic wave theory，AVO analysis reflects the underground lithologies and pore fluid properties according to the variation of amplitude with offset. In the application process，AVO forward modeling was carried out based on the relevant parameter combination of different lithologies and fluids，AVO characteristics of known lithologies and fluid properties were obtained and compared with actual seismic records，and then a seismic response model for lithologies and oil and gas identification was established.（2）The crossplot analysis of porosity，intercept and gradient attributes established by model and actual data was used to clarify the internal relationship between the three，determine the classification criteria of lithofacies，fit the probability density function of different lithofacies，and divide the lithofacies of different porosity intervals，to realize the semi-quantitative prediction of porosity.（3）In the application of tight sandstone of the first member of Jurassic Shaximiao Formation in central Sichuan Basin，the lithofacies predicted by probability distribution based on Bayesian classification is up to 93.75% consistent with the actual drilling results，which verifies the feasibility and effectiveness of the method.

Key words: tight sandstone, lithofacies prediction, porosity, AVO attributes, Bayesian classification, Shaximiao Formation, Jurassic, Sichuan Basin

CLC Number: 

  • TE122.1
[1] 杨雨, 谢继容, 曹正林, 等. 四川盆地天府气田沙溪庙组大型致密砂岩气藏形成条件及勘探开发关键技术[J]. 石油学报, 2023, 44(6):917-932. YANG Yu, XIE Jirong, CAO Zhenglin, et al. Forming conditions and key technologies for exploration and development of large tight sandstone gas reservoirs in Shaximiao Formation, Tianfu gas field of Sichuan Basin[J]. Acta Petrolei Sinica, 2023, 44(6):917-932.
[2] 邹才能, 陶士振, 袁选俊, 等. 连续型油气藏形成条件与分布特征[J]. 石油学报, 2009, 30(3):324-331. ZOU Caineng, TAO Shizhen, YUAN Xuanjun, et al. The formation conditions and distribution characteristics of continuous petroleum accumulations[J]. Acta Petrolei Sinica, 2009, 30(3):324-331.
[3] 叶泰然, 刘兴艳, 苏锦义. 地震分频解释技术在川西陆相砂岩储层预测中的应用[J]. 天然气工业, 2007, 27(增刊1):454-456. YE Tairan, LIU Xingyan, SU Jinyi. Application of seismic frequency division interpretation technology in continental sandstone reservoir prediction in western Sichuan[J]. Natural Gas Industry, 2007, 27(Suppl 1):454-456.
[4] 付菊, 伍玲, 李刚, 等. 川西坳陷中段合兴场-丰谷地区沙溪庙组沉积相研究[J]. 岩性油气藏, 2014, 26(1):75-79. FU Ju, WU Ling, LI Gang, et al. Sedimentary facies of Shaximiao Formation in Hexingchang-Fenggu area at the middle part of western Sichuan Depression[J]. Lithologic Reservoirs, 2014, 26(1):75-79.
[5] 邓浩阳, 司马立强, 吴玟, 等. 致密砂岩储层孔隙结构分形研究与渗透率计算:以川西坳陷蓬莱镇组、沙溪庙组储层为例[J]. 岩性油气藏, 2018, 30(6):76-82. DENG Haoyang, SIMA Liqiang, WU Wen, et al. Fractal characteristics of pore structure and permeability calculation for tight sandstone reservoirs:A case of Penglaizhen Formation and Shaximiao Formation in western Sichuan Depression[J]. Lithologic Reservoirs, 2018, 30(6):76-82.
[6] ILKHCHI R K, HARAMI R M, REZAEE R, et al. Seismic inversion and attributes analysis for porosity evaluation of the tight gas sandstones of the Whicher Range field in the Perth Basin, western Australia[J]. Journal of Natural Gas Science and Engineering, 2014, 21:1073-1083.
[7] DURRANI M Z A, RAHMAN S A, TALIB M, et al. Rock physics assisted pre-stack AVA simultaneous inversion for lithofacies and porosity prediction of deeply buried mixed sedimentary reservoirs in Potwar Basin, Onshore Pakistan[J]. Journal of Applied Geophysics, 2022, 205(10):104766.
[8] ILKHCHI R K, KADKHODAIE A, REZAEE R, et al. Unraveling the reservoir heterogeneity of the tight gas sandstones using the porosity conditioned facies modeling in the Whicher Range field, Perth Basin, western Australia[J]. Journal of Petroleum Science and Engineering, 2019, 176:97-115.
[9] GULIYEV E, DAVIS T L. Interpretation of Vp/Vs velocity ratio for improved tight gas sandstone reservoir characterization, Rulison field, Colorado[R]. San Antonio, Texas:2007 SEG Annual Meeting, 2007.
[10] RUMON M, DAVIS T. Shear wave time-lapse seismic monitoring of a tight gas sandstone reservoir, Rulison Field, Colorado[R]. New Orleans, Louisiana:2006 SEG Annual Meeting, 2006.
[11] WONG J, STEWART R R. Crosswell seismic imaging of a tight-gas reservoir[G]. SEG Technical Program Expanded Abstracts, 2007:3124.
[12] 刘桓, 苏勤, 曾华会, 等. 近地表Q补偿技术在川中地区致密气勘探中的应用[J]. 岩性油气藏, 2021, 33(3):104-112. LIU Huan, SU Qin, ZENG Huahui, et al. Application of nearsurface Q compensation technology in tight gas exploration in central Sichuan Basin[J]. Lithologic Reservoirs, 2021, 33(3):104-112.
[13] 赵邦六, 张宇生, 曾忠, 等. 川中地区侏罗系沙溪庙组致密气处理和解释关键技术与应用[J]. 石油地球物理勘探, 2021, 56(6):1370-1380. ZHAO Bangliu, ZHANG Yusheng, ZENG Zhong, et al. Key technology and application of processing and interpretation of tight gas in Jurassic Shaximiao Formation in Central Sichuan Basin[J]. Oil Geophysical Prospecting, 2021, 56(6):1370-1380.
[14] 李勇根, 徐胜峰. 地震岩石物理和正演模拟技术在致密砂岩储层预测中的应用研究[J]. 石油天然气学报, 2008, 30(6):61-65. LI Yonggen, XU Shengfeng. Application of seismic rock physics and forward simulation in predicting tight sandstone reservoirs[J]. Journal of Oil and Gas Technology, 2008, 30(6):61-65.
[15] 汪关妹, 张万福, 张宏伟, 等. 致密砂岩气地震预测关键技术及效果[J]. 石油地球物理勘探, 2020, 55(增刊1):72-79. WANG Guanmei, ZHANG Wanfu, ZHANG Hongwei, et al. Key technology and effect of prediction of tight sandstone gas based on seismic data[J]. Oil Geophysical Prospecting, 2020, 55(Suppl 1):72-79.
[16] 曹卿荣, 李佩, 孙凯, 等. 应用地震属性分析技术刻画河道砂体[J]. 岩性油气藏, 2007, 19(2):93-96. CAO Qingrong, LI Pei, SUN Kai, et al. Using seismic attributes to identify channel sand body[J]. Lithologic Reservoirs, 2007, 19(2):93-96.
[17] 董宁, 刘振峰, 周小鹰, 等. 鄂尔多斯盆地致密碎屑岩储层地震识别及预测[J]. 石油与天然气地质, 2008, 29(5):668-675. DONG Ning, LIU Zhenfeng, ZHOU Xiaoying, et al. Seismic detection and prediction of tight gas reservoirs in the Ordos Basin[J]. Oil & Gas Geology, 2008, 29(5):668-675.
[18] 武恒志, 叶泰然, 赵迪, 等. 川西坳陷陆相致密气藏河道砂岩储层精细刻画技术及其应用[J]. 石油与天然气地质, 2015, 36(2):230-239. WU Hengzhi, YE Tairan, ZHAO Di, et al. Fine characterization technique and its application to channel sandstone in continental tight gas reservoirs of western Sichuan Depression[J]. Oil & Gas Geology, 2015, 36(2):230-239.
[19] 朱讯, 肖富森, 洪海涛, 等. 四川盆地中部地区致密河道砂岩气藏高产井地震模式及井轨迹设计[J]. 天然气勘探与开发, 2020, 43(3):86-93. ZHU Xun, XIAO Fusen, HONG Haitao, et al. Seismic model and wellbore trajectory design for high-yield wells of tight channel sandstone gas reservoirs, central Sichuan Basin[J]. Natural Gas Exploration and Development, 2020, 43(3):86-93.
[20] 郝会民, 徐礼贵, 张宇生. 非常规油气地震勘探技术及应用新进展[R]. 北京:中国油气论坛2011-非常规油气勘探开发技术专题研讨会, 2011. HAO Huimin, XU Ligui, ZHANG Yusheng. New progress in unconventional oil and gas seismic exploration technology and its application[R]. Beijing:China Oil and Gas Forum 2011-Special Symposium on Unconventional Oil and Gas Exploration and Development Technology, 2011.
[21] 严谨, 史云清. 中国致密气开发技术进展及展望[J]. 矿山工程, 2021, 9(1):36-45. YAN Jin, SHI Yunqing. Development and prospect of tight gas in China[J]. Mine Engineering, 2021, 9(1):36-45.
[22] HILTERMAN F J.地震振幅解释[M]. 孙夕平, 赵良武, 译.北京:石油工业出版社, 2006. HILTERMAN F J. Seismic Amplitude Interpretaion[M]. SUN Xiping, ZHAO Liangwu, translate. Bejing:Petroleum Industry Press, 2006.
[23] RUTHERFORD S R, WILLIAMS R H. Amplitude-versus-offset variations in gas sand[J]. Geophysics, 1989, 54(6):680-688.
[24] CASTAGNA J P, SWAN H W. Principles of AVO crossplotting[J]. The Leading Edge, 1997, 16(4):337-342.
[25] CASTAGNA J P, SWAN H W, FOSTER D J. Framework for AVO gradient and intercept interpretation[J]. Geophysics, 1998, 63(3):948-956.
[26] ROSS C P, KINMAN D L. Nonbright-spot AVO:Two examples[J]. Geophysics, 1995, 60(5):1398-1408.
[27] AVSETH P, MUKERJI T, MAVKO G. Quantitative seismic interpretation:Applying rock physics tools to reduce interpretation risk[M]. New York:Cambridge University Press, 2005.
[28] BULAND A, OMRE H. Bayesian linearized AVO inversion[J]. Geophysics, 2003, 68(1):185-198.
[29] CIZEK V. Discrete Hilbert Transform[J]. IEEE Transactions on Audio and Electroacoustics, 1970, 18(4):340-343.
[30] 夏红敏, 王尚旭, 李生杰. 含气地层的AVO响应分析:以苏4井为例[J]. 石油物探, 2006, 45(4):357-361. XIA Hongmin, WANG Shangxu, LI Shengjie. AVO analysis on gas-bearing layer[J]. Geophysical Prospecting for Petroleum, 2006, 45(4):357-361.
[31] 潘仁芳, 陈思路, 张利萍, 等. 含气砂岩AVO正演的半定量分析[J]. 石油地球物理勘探, 2013, 48(1):103-108. PAN Renfang, CHEN Silu, ZHANG Liping, et al. Semiquantitative analysis of gas bearing sand by AVO forward modeling[J]. Oil Geophysical Prospecting, 2013, 48(1):103-108.
[32] 王迪, 张益明, 刘志斌, 等. AVO定量解释模版在LX地区致密气"甜点"预测中的应用[J]. 石油物探, 2020, 59(6):936-948. WANG Di, ZHANG Yiming, LIU Zhibin, et al. Application of an AVO template to identify sweet spots in a tight sandstone reservoir in the LX area[J]. Geophysical Prospecting for Petroleum, 2020, 59(6):936-948.
[33] FOSTER D J, KEYS R G, LANE F D. Interpretation of AVO anomalies[J]. Geophysics, 2010, 75(5):75A3-75A13.
[1] YU Qixiang, LUO Yu, DUAN Tiejun, LI Yong, SONG Zaichao, WEI Qingliang. Reservoir forming conditions and exploration prospect of Jurassic coalbed methane encircling Dongdaohaizi sag，Junggar Basin [J]. Lithologic Reservoirs, 2024, 36(6): 45-55.
[2] ZHANG Tianze, WANG Hongjun, ZHANG Liangjie, ZHANG Wenqi, XIE Mingxian, LEI Ming, GUO Qiang, ZHANG Xuerui. Application of ray-path elastic impedance inversion in carbonate gas reservoir prediction of the right bank of Amu Darya River [J]. Lithologic Reservoirs, 2024, 36(6): 56-65.
[3] GOU Honguang, LIN Tong, FANG Qiang, ZHANG Hua, LI Shan, CHENG Yi, You Fan. Stratigraphic division of astronomical cycle in early-middle Jurassic Shuixigou Group in the Shengbei subsag of Tuha Basin [J]. Lithologic Reservoirs, 2024, 36(6): 89-97.
[4] ZHANG Peijun, XIE Mingxian, LUO Min, ZHANG Liangjie, CHEN Renjin, ZHANG Wenqi, YUE Xingfu, LEI Ming. Analysis of deformation mechanism of ultra thick gypsum salt rock and its significance for oil and gas reservoir formation：A case study of the Jurassic gypsum salt layers in theAgayry region，eastern right bank of theAmu Darya River [J]. Lithologic Reservoirs, 2024, 36(6): 36-44.
[5] XIAO Boya. Characteristics and favorable zone distribution of tuff reservoirt of Cretaceous in A’nan sag，Erlian Basin [J]. Lithologic Reservoirs, 2024, 36(6): 135-148.
[6] QIAO Tong, LIU Chenglin, YANG Haibo, WANG Yifeng, LI Jian, TIAN Jixian, HAN Yang, ZHANG Jingkun. Characteristics and genetic mechanism of condensate oil and gas of the Jurassic Sangonghe Formation in western well Pen-1 sag，Junggar Basin [J]. Lithologic Reservoirs, 2024, 36(6): 169-180.
[7] YAN Xueying, SANG Qin, JIANG Yuqiang, FANG Rui, ZHOU Yadong, LIU Xue, LI Shun, YUAN Yongliang. Main controlling factors for the high yield of tight oil in the Jurassic Da’anzhai Section in the western area of Gongshanmiao, Sichuan Basin [J]. Lithologic Reservoirs, 2024, 36(6): 98-109.
[8] LI Daoqing, CHEN Yongbo, YANG Dong, LI Xiao, SU Hang, ZHOU Junfeng, QIU Tingcong, SHI Xiaoqian. Intelligent comprehensive prediction technology of coalbed methane “sweet spot”reservoir of Jurassic Xishanyao Formation in Baijiahai uplift，Junggar Basin [J]. Lithologic Reservoirs, 2024, 36(6): 23-35.
[9] QIU Yuchao, LI Yading, WEN Long, LUO Bing, YAO Jun, XU Qiang, WEN Huaguo, TAN Xiucheng. Structural characteristics and hydrocarbon accumulation model of Cambrian Xixiangchi Formation in eastern Sichuan Basin [J]. Lithologic Reservoirs, 2024, 36(5): 122-132.
[10] YANG Xuefeng, ZHAO Shengxian, LIU Yong, LIU Shaojun, XIA Ziqiang, XU Fei, FAN Cunhui, LI Yutong. Main controlling factors of shale gas enrichment of Ordovician Wufeng Formation-Silurian Longmaxi Formation in Ningxi area，Sichuan Basin [J]. Lithologic Reservoirs, 2024, 36(5): 99-110.
[11] KONG Lingfeng, XU Jiafang, LIU Ding. Pore structure characteristics and dehydration evolution of lignite reservoirs of Jurassic Xishanyao Formation in Santanghu Basin [J]. Lithologic Reservoirs, 2024, 36(5): 15-24.
[12] ZHOU Gang, YANG Dailin, SUN Yiting, YAN Wei, ZHANG Ya, WEN Huaguo, HE Yuan, LIU Sibing. Sedimentary filling process and petroleum geological significance of Cambrian Canglangpu Formation in Sichuan Basin and adjacent areas [J]. Lithologic Reservoirs, 2024, 36(5): 25-34.
[13] ZHANG Xiaoli, WANG Xiaojuan, ZHANG Hang, CHEN Qin, GUAN Xu, ZHAO Zhengwang, WANG Changyong, TAN Yaojie. Reservoir characteristics and main controlling factors of Jurassic Shaximiao Formation in Wubaochang area，northeastern Sichuan Basin [J]. Lithologic Reservoirs, 2024, 36(5): 87-98.
[14] HE Wenyuan, CHEN Keyang. Prediction method for lithologic reservoirs in Doshan slope zone of South Turgai Basin，Kazakhstan [J]. Lithologic Reservoirs, 2024, 36(4): 1-11.
[15] BAO Hanyong, ZHAO Shuai, ZHANG Li, LIU Haotian. Exploration achievements and prospects for shale gas of Middle-Upper Permian in Hongxing area，eastern Sichuan Basin [J]. Lithologic Reservoirs, 2024, 36(4): 12-24.
Viewed
Full text


Abstract

Cited
  Shared   
  Discussed   
[1] PANG Xiongqi,CHEN Dongxia, ZHANG Jun. Concept and categorize of subtle reservoir and problems in its application[J]. Lithologic Reservoirs, 2007, 19(1): 1 -8 .
[2] WEI Qinlian, ZHENG Rongcai, XIAO Ling,WANG Chengyu, NIU Xiaobing. Influencing factors and characteristics of Chang 6 reservoir in Wuqi area, Ordos Basin[J]. Lithologic Reservoirs, 2007, 19(4): 45 -50 .
[3] YANG Qiulian, LI Aiqin, SUN Yanni, CUI Panfeng. Classification method for extra-low permeability reservoirs[J]. Lithologic Reservoirs, 2007, 19(4): 51 -56 .
[4] ZHANG Jie, ZHAO Yuhua. Seismic sequence of Triassic Yanchang Formation in Ordos Basin[J]. Lithologic Reservoirs, 2007, 19(4): 71 -74 .
[5] LEI Bianjun, ZHANG Ji,WANG Caili,WANG Xiaorong, LI Shilin, LIU Bin. Control of high r esolution sequence str atigr aphy on microfacies and reservoir s: A case from the upper Ma 5 member in Tong 5 wellblock, Jingbian Gas Field[J]. Lithologic Reservoirs, 2008, 20(1): 1 -7 .
[6] YANG Jie，WEI Pingsheng， LI Xiangbo. Basic concept, content and research method of petroleum seismogeology[J]. Lithologic Reservoirs, 2010, 22(1): 1 -6 .
[7] YANG Zhanlong,ZHANG Zhenggang,CHEN Qilin,GUO Jingyi,SHA Xuemei,LIU Wensu. Using multi-parameters analysis of seismic information to evaluate lithologic traps in continental basins[J]. Lithologic Reservoirs, 2007, 19(4): 57 -63 .
[8] KUANG Hongwei, GAO Zhenzhong, WANG Zhengyun, WANG Xiaoguang. A type of specific subtle reservoir : Analysis on the origin of diagenetic trapped reservoirs and its significance for exploration in Xia 9 wellblock of Junggar Basin[J]. Lithologic Reservoirs, 2008, 20(1): 8 -14 .
[9] LI Guojun, ZHENG Rongcai, TANG Yulin, WANG Yang, TANG Kai. Sequence-based lithofacies and paleogeography of Lower Triassic Feixianguan Formation in northeastern Sichuan Basin[J]. Lithologic Reservoirs, 2007, 19(4): 64 -70 .
[10] DAI Liming, LI Jianping, ZHOU Xinhuai, CUI Zhongguo, CHENG Jianchun. Depositional system of the Neogene shallow water delta in Bohai Sea area[J]. Lithologic Reservoirs, 2007, 19(4): 75 -81 .
TRENDMD:

Copyright © 2018 Lithologic Reservoirs

Support by Beijing Magtech support@magtech.com.cn