川西坳陷中、浅层气藏储层识别技术

doi:10.11743/ogg20060619

Abstract

Abstract:

The non-marine shallow-middle gas reservoirs(with depth ranging from 500 m to 3000 m)in western Sichuan depression are near-normal to tight sandstone of distal facies.These reservoirs are mainly distributed in the Jurassic and Cretaceous formations where large-to medium-sized gas fields,such as Xinchang,Luodai,Xindu,Majing,and etc,are harbored.The shallow-middle reservoirs in western Sichuan depression feature in well-developed reservoirs,favorable transportation conditions,ideal matching of reservoir distribution and structure configuration,and good sealing.Sedimentary micro-facies reservoirs are mainly composed of delta front sill-like sand,delta front distributary channel sand,estuarine sand bar,and sublacustrine fan sand.The reservoirs typically show low wave impedance and large wave impedance difference with surrounding rocks.The seismogeological conditions are rather unfavorable in western Sichuan depression,where the surface is covered by unconsolidated pebble and sandy soil beds with thickness ranging from several meters to 200 meters,resulting in severe high frequency attenuation and strong interference waves,such as surface wave,acoustic wave and refraction wave,and low S/N ratio.Therefore,a successful gas reservoir recognition in the study area involves the application of high-precision 3D seismic data acquisition in areas covered by unconsolidated pebble layers,3D seismic processing with gas bearing seismic responses preserved,reservoir seismic attributes extraction and analysis based on forward modeling,and reservoir spatial delineation and multi-disciplinary integrated evaluation.The exploration and production of the shallow-middle gas reservoirs in the study area show that seismic exploration plays an important role in delineation of reservoir distribution,description of the spatial geometry of the reservoirs,inverse modeling of the reservoir parameters,study of sedimentary facies and heterogeneity,determining prolific gas-bearing zone,and recognition of gas-bearing properties.

Key words: tight sand, seismic response, seismic attribute, reservoir spatial delineation, heterogeneity, reservoir recognition, distal gas reservoir, western Sichuan depression

CLC Number:

TE112.2

Tang Jianming, Yang Jun2, Zhang Shaonan. Recognition of shallow-middle gas reservoirs in western Sichuan depression[J]. Oil & Gas Geology, 2006, 27(6): 879-894.

References

[1] 王国亮,周文英,唐立章,等.川西坳陷中段天然气资源评价[A].见:杨克明,徐进,编.天然气成藏理论与勘探开发方法技术[C].北京:地质出版社,2004.91～97 Wang Guoliang,Zhou Wenying,Tang Lizhang,et al.Resouce evaluation of middle member in West Sichuan depression[A].In:Yang Keming,Xu Jin,eds.Reservoir formation theory and exploration and production technology on natural gas[C].Beijing:Geology Publishing House,2004.91-97
[2] 冉隆辉,谢姚祥,王兰生.从四川盆地解读中国南方海相碳酸盐岩油气勘探[J].石油与天然气地质,2006,27(3):289～294 Ran Longhui,Xie Yaoxiang,Wang Lansheng.Understanding exploration of marine carbonate reservoirs in South China through Sichuan basin[J].Oil & Gas Geology,2006,27(3):289-294
[3] 郭正吾.四川盆地西部致密碎屑岩含气领域勘探理论与实践[A].见:杨克明,徐进,编.天然气成藏理论与勘探开发方法技术[C].北京:地质出版社,2004.17～21 Guo Zhengwu.Exploratory theory and practice of gas-bearing field tight clastic in West Sichuan basin[A].In:Yang Keming,Xu Jin,eds.Reservoir formation theory and exploration and production technology on natural gas[C].Beijing:Geology Publishing House,2004.17-21
[4] 曹烈,安凤山,王信.川西坳陷须家河组气藏与古构造关系[J].石油与天然气地质,2005,26(2):224～229 Cao Lie,An Fengshan,Wang Xin.Relationship between palaeostructure and gas reservoirs in Xujiahe formation in Western Sichuan depression[J].Oil & Gas Geology,2005,26(2):224-229
[5] 李书兵.川西坳陷远源气藏成藏主控因素分析[A].见:杨克明徐进,编.天然气成藏理论与勘探开发方法技术[C].北京:地质出版社,2004.42～52 Li Shubing.Analysis on the main factors controlling the far-source gas reservoir formation in West Sichuan depression[A].In:Yang Keming,Xu Jin,eds.Reservoir formation theory and exploration and production technology on natural gas[C].Beijing:Geology Publishing House,2004.42-52
[6] 叶军.川西坳陷天然气富集规律[A].见:杨克明徐进,编.天然气成藏理论与勘探开发方法技术[C].北京:地质出版社,2004.85～90 Ye Jun.Accumulation rule of natural gas in West Sichuan depression[A].In:Yang Keming,Xu Jin,eds.Reservoir formation theory and exploration and production technology on natural gas[C].Beijing:Geology Publishing House,2004.85-90
[7] 朱彤,叶军.川西坳陷致密碎屑岩气藏类型划分及特征[J].石油实验地质,2004,26(6):537～541,546 Zhu Tong,Ye Jun.Types and characteristics of tight clastic rock gas pools in the West Sichuan depression[J].Petroleum Geology & Experiment,2004,26(6):537-541,546
[8] 叶军,陈昭国.川西新场大型气田地质特征与预测关键技术[J].石油与天然气地质,2006,27(3):384～391 Ye Jun,Chen Zhaoguo.Geological characteristics of large Xinchang gas field in Western Sichuan depression and key prediction technologies[J].Oil & Gas Geology,2006,27(3):384-391
[9] 李庆忠.走向精确勘探的道路[M].北京:石油工业出版社,1993.12～30 Li Qingzhong.The way to obtain a better resolution in seismic prospecting[M].Beijing:Petroleum Industry Press,1993.12-30
[10] Knapp R W.Vertical resolution of thick beds,thin beds,and bed cyclothems[J].Geophysics,1990,55(9):1 183-1 190
[11] Kallweit R S,Wood L C.The limits of resolution of zero-phase wavelets[J].Geophysics,1982,47(7):1 035-1 046
[12] Ricker N.Wavelet contraction,wavelet expression,and the control of seismic resolution[J].Geophysics,1953,18(6):769-792
[13] Widess M B.How thin is a thin bed[J].Geophysics,1973,38(6):1 176-1 180
[14] Gochioco L M.Tuning effect and interference reflections from thin beds and coal seams[J].Geophysics,1991,56(8):1 288-1 295
[15] Sheriff R E.Limitations on resolution of seismic reflection and geologic detail derivable from them[J].AAPG Memoir 26,1977:3-14
[16] Guangming Z,Qingchun L.Using the wavelet transform to detect singularities of the thin bed seismic signals[J].SEG Expanded Abstracts,2000:50-54
[17] 云美厚.地震分辨率[J].勘探地球物理进展,2005,28(1):12～18 Yun Meihou.On seismic resolution[J].Progress in Exploration Geophysics,2005,28(1):12-18
[18] 云美厚,丁伟,王新红.地震水平分辨力研究与应用[J].勘探地球物理进展,2005,28(2):102～107 Yun Meihou,Ding Wei,Wang Xinhong.Study and application of seismic horizontal resolution[J].Progress in Exploration Geophysics,2005,28(2):102-107
[19] 李显贵,绍吉华,张涛.波阻抗模型正演技术在砂岩储层预测中的应用[J].石油物探,2004,43(6):584～586 Li Xiangui,Shao Jihua,Zhang Tao.Using forward impedance mo-deling to trace the sandstone reservoir[J].Geophysical Prospecting for Petroleum,2004,43(6):584-586
[20] Greg P,James G,John L.Interpretational applications of spectral decomposition in reservoir characterization[J].The Leading Edge,1999,18(3):353-360
[21] Lynn P,Rich B,Greg P.Interpretation of incised valleys using new 3-D seismic techniques:a case history using spectral decomposition and coherency[J].The Leading Edge,1998,17(9):1 294-1 298
[22] 蔡刚,吕锡敏,苏明军,等.频谱分解技术在准噶尔盆地油气勘探中的作用[J].天然气工业,2006,26(4):35～37 Cai Gang,L Ximing,Su Mingjun,et al.Application of spectrum decomposition technique in exploration in Junggar basin[J].Na-tural Gas Industry,2006,26(4):35-37
[23] 刘雯林.油藏描述原理与方法技术[M].北京:石油工业出版社,1995.7～147 Liu Wenlin.Theory and technology on reservoir characterization[M].Beijing:Petroleum Industry Press,1995.7-147
[24] 冉建斌,李建雄,刘亚村.基于三维地震资料的油藏描述技术和方法[J].石油地球物理勘探,2004,39(1):102～112 Ran Jianbin,Li Jianxiong,Liu Yacun.3-D seismic-data-based reservoir description technology and methods[J].Oil Geophysical Prospecting,2004,39(1):102-112
[25] 谢用量,唐建明,杨振武.地震地层反演在川西致密砂岩气藏描述中的应用[J].石油地球物理勘探,2004,35(2):228～235 Xie Yongliang,Tang Jianming,Yang Zhenwu.Application of seismic strata inversion in tight sandstone reservoir characterization in Western Sichuan depression[J].Oil Geophysical Prospecting,2004,35(2):228-235

Recognition of shallow-middle gas reservoirs in western Sichuan depression

PDF (PC)

Knowledge

Cited

Abstract

Cite this article

share this article

References

Related Articles 15

Recommended Articles

Metrics

[1]	Hui PAN, Yuqiang JIANG, Xun ZHU, Haibo DENG, Linke SONG, Zhanlei WANG, Miao LI, Yadong ZHOU, Linjie FENG, Yongliang YUAN, Meng WANG. Evaluation of geological sweet spots in fluvial tight sandstone gas： A case study of the first submember of the second member of the Jurassic Shaximiao Formation， central Sichuan Basin [J]. Oil & Gas Geology, 2024, 45(2): 471-485.
[2]	Jiangjun CAO, Jiping WANG, Daofeng ZHANG, Long WANG, Xiaotian LI, Ya LI, Yuanyuan ZHANG, Hui XIA, Zhanhai YU. Effects of diagenetic evolution on gas-bearing properties of deep tight sandstone reservoirs： A case study of reservoirs in the 1^st member of the Permian Shanxi Formation in the Qingyang gas field， southwestern Ordos Basin [J]. Oil & Gas Geology, 2024, 45(1): 169-184.
[3]	Shuangjian LI, Zhi LI, Lei ZHANG, Yingqiang LI, Xianwu MENG, Haijun WANG. Hydrocarbon accumulation conditions and exploration targets of the Triassic subsalt ultra-deep sequences in the western Sichuan Depression， Sichuan Basin [J]. Oil & Gas Geology, 2023, 44(6): 1555-1567.
[4]	Jianhui ZENG, Yaxiong ZHANG, Zaizhen ZHANG, Juncheng QIAO, Maoyun WANG, Dongxia CHEN, Jingli YAO, Jingchen DING, Liang XIONG, Yazhou LIU, Weibo ZHAO, Kebo REN. Complex gas-water contacts in tight sandstone gas reservoirs： Distribution pattern and dominant factors controlling their formation and distribution [J]. Oil & Gas Geology, 2023, 44(5): 1067-1083.
[5]	He LIU, Siwei MENG, Suling WANG, Kangxing DONG, Liu YANG, Jiaping TAO, Lihao LIANG. Mechanical characteristics and fracture propagation mechanisms of the Gulong shale [J]. Oil & Gas Geology, 2023, 44(4): 820-828.
[6]	Yong DENG, Caiwei FAN, Desheng HU, Weijun HE, Jianxin ZHANG. Heterogeneity of shale oil reservoirs in the E₂l^2（1） in Weixinan Sag， Beibu Gulf Basin [J]. Oil & Gas Geology, 2023, 44(4): 923-936.
[7]	Hongbo WANG, Cunfei MA, Zheng CAO, Zhipeng LI, Changcheng HAN, Wenming JI, Yi YANG. Differential diagenesis and reservoir physical property responses of tight sandstone based on lithofacies： A case study on the Lower Jurassic Sangonghe Formation in Moxizhuang area， Junggar Basin [J]. Oil & Gas Geology, 2023, 44(4): 976-992.
[8]	Hongqi YUAN, Xinyu DENG, Huiyao DU, Yinghua YU, Fengming XU. Characterizing the heterogeneity of tight sandstone in outcropped Permian Shanxi Formation， Liujiang Basin [J]. Oil & Gas Geology, 2023, 44(2): 468-479.
[9]	Qian DING, Jingbin WANG, Leilei YANG, Dongya ZHU, Wenbin JIANG, Zhiliang HE. Exploring the mineral dissolution-precipitation processes in fracture-fluid-rock systems based on simulation experiments [J]. Oil & Gas Geology, 2023, 44(1): 164-177.
[10]	Wenhao Li, Shuangfang Lu, Min Wang, Nengwu Zhou, Zehu Cheng. Quantitative characterization of micro heterogeneity of tight reservoirs by large-view FE-SEM splicing technology [J]. Oil & Gas Geology, 2022, 43(6): 1497-1504.
[11]	Fanchi Nan, Liangbiao Lin, Yu Yu, Zhaobing Chen, Shangchao Mu, Hongbo Wang, Guanhua Ji, Junmin Ma. Application of backward elimination procedure in evaluation of microscopic reservoir heterogeneity in Chang 6 Member， Ordos Basin [J]. Oil & Gas Geology, 2022, 43(5): 1155-1166.
[12]	Chenglin Liu, Xinju Liu, Hongjun Zhang, Liyong Fan, Xiya Yang, Qibiao Zang, Bo Dai, Yue Meng, Hongliang Huo, Fang Wang. Application of an integrated geology-reservoir engineering approach to shale oil development in Ansai area， Ordos Basin [J]. Oil & Gas Geology, 2022, 43(5): 1238-1248.
[13]	Ziliang Liu, Minghe Zhang, Sibing Liu, Junjie Wang, Jingyu Hao, Yicai Chen, Yue Zhou. Reservoir characteristics and controlling factors of the Carboniferous Simen Formation at the southern margin of Xuefeng Mountain， Guangxi Zhuang Autonomous Region， China [J]. Oil & Gas Geology, 2022, 43(4): 902-916.
[14]	Guangyuan Sun, Zhelin Wang, Peigang Liu, Zhiqiang Zhang. Dissolved micro-pores in alkali feldspar and their contribution to improved properties of tight sandstone reservoirs： A case study from Triassic Chang-6³ sub-member， Huaqing area， Ordos Basin [J]. Oil & Gas Geology, 2022, 43(3): 658-669.
[15]	Liang Xu, Wei Yang, Zhenxue Jiang, Dongxia Chen, Yaohua Wang, Jiankang Lu, Mingzhu Zhao, Lan Li. Evolution and genesis of organic pores in Triassic Xujiahe Formation shale， Western Sichuan Depression， Sichuan Basin [J]. Oil & Gas Geology, 2022, 43(2): 325-340.