Abstract：Due to multi-stage superposition, small thickness, and complex and varied seismic reflection structures of bioclastic beaches in Maokou Formation of Langzhong area, northern Sichuan Basin, conventional seismic interpretation and prediction methods are not suitable for the identification of bioclastic beaches and the fine characterization of their internal structures. Therefore, with the facies-sequence combination of a single well as the basis, drilling and seismic data are combined to finely calibrate and divide the development stages of bioclastic beaches and determine the seismic reflection characteristics of bioclastic beaches at different stages. The main factors affecting the internal reflection characteristics of bioclastic beaches are analyzed by forward modeling. The global automatic scanning interpretation technique based on sequence stratigraphy is used to accurately depict the internal reflection structure of bioclastic beaches. The seismic attributes that can characterize the distribution characteristics of the bioclastic beaches are selected and combined with the seismic facies to determine the development zone of bioclastic beaches. The sedimentary evolution of clastic beaches at different stages is analyzed in combination with isochronous stratigraphic slicing properties, and the spatial distribution of multi-stage bioclastic beaches is intuitively displayed. The results show that three stages of bioclastic beaches are mainly deve-loped, manifested with "superposed, oblique, cluttered, and weak-amplitude" reflection characteristics. Horizontally, they are distributed in the NW-SE direction;vertically, they are deposited by coating and aggradation from the northeast to the southwest direction in the study area. Dolomite reservoirs are mainly developed in the stage-Ⅲ bioclastic beach. The above results are consistent with the actual drilling results and can provide a basis for future oil and gas exploration.
郭旭升,胡东风.川东北礁滩天然气勘探新进展及关键技术[J].天然气工业,2011,31(10):6-11.GUO Xusheng,HU Dongfeng.Newest progress and key techniques in gas exploration of reef-bank reservoirs in the northeastern Sichuan Basin[J].Natural Gas Industry,2011,31(10):6-11.
[2]
何永壵,王英民,许翠霞,等.生物礁、滩、灰泥丘沉积特征及地震识别[J].石油地球物理勘探,2014,49(5):971-984.HE Yongyao,WANG Yingmin,XU Cuixia,et al.Sedi-mentary characteristics of reef,shoal and lime mud mound,and their seismic identification[J].Oil Geophysical Prospecting,2014,49(5):971-984.
[3]
王超,陆永潮,杜学斌,等.南海西部深水区台缘生物礁发育模式与成因背景[J].石油地球物理勘探,2015,50(6):1179-1189.WANG Chao,LU Yongchao,DU Xuebin,et al.Deve-lopmental pattern and genetic background of carbo-nate platform margin reef complexes in deep-water area in Western South China Sea[J].Oil Geophysical Prospecting,2015,50(6):1179-1189.
[4]
胡伟光,蒲勇,赵卓男,等.川东北元坝地区长兴组生物礁的识别[J].石油物探,2010,49(1):46-53.HU Weiguang,PU Yong,ZHAO Zhuonan,et al.Identification of reef reservoir of Changxing formation in Yuanba area of Northeastern Sichuan Basin[J].Geo-physical Prospecting for Petroleum,2010,49(1):46-53.
[5]
王高峰,刘宏,刘南,等.川西北剑阁地区上二叠统长兴组生物礁储层的地球物理特征及正演模拟[J].石油物探,2016,55(6):831-839.WANG Gaofeng,LIU Hong,LIU Nan,et al.Seismic forward modeling on the reef reservoir of Upper Permian Changxing formation in Jian'ge area,northwest Sichuan Basin[J].Geophysical Prospecting for Petroleum,2016,55(6):831-839.
[6]
王明筏,肖伟,秦绪乾,等.古地貌对礁滩储层的控制作用——以四川盆地元坝地区二叠系长兴组为例[J].天然气勘探与开发,2018,41(2):22-28.WANG Mingfa,XIAO Wei,QIN Xuqian,et al.Effect of palaeogeomorphology on reef-shoal reservoirs:A case study on Permian Changxing Formation,Yuanba area,Sichuan Basin[J].Natural Gas Exploration and Development,2018,41(2):22-28.
[7]
肖秋红,李雷涛,屈大鹏,等.YB地区长兴组礁滩地震相精细刻画[J].石油物探,2012,51(1):98-103.XIAO Qiuhong,LI Leitao,QU Dapeng,et al.Fine des-cription on the seismic facies of reef-beach reservoir in Changxing formation,YB area[J].Geophysical Prospecting for Petroleum,2012,51(1):98-103.
[8]
殷积峰,李军,谢芬,等.波形分类技术在川东生物礁气藏预测中的应用[J].石油物探,2007,46(1):53-57.YIN Jifeng,LI Jun,XIE Fen,et al.Application of waveform classification technique in predicting reef gas pool in east Sichuan basin[J].Geophysical Prospecting for Petroleum,2007,46(1):53-57.
[9]
龙胜祥,游瑜春,刘国萍,等.元坝气田长兴组超深层缓坡型礁滩相储层精细刻画[J].石油与天然气地质,2015,36(6):994-1000.LONG Shengxiang,YOU Yuchun,LIU Guoping,et al.Fine characterization of ultra-deep reef-shoal reservoirs of ramp-type in Changxing Formation in Yuanba gas field,Sichuan Basin[J].Oil & Gas Geology,2015,36(6):994-1000.
[10]
蔡涵鹏,贺振华,黄德济.礁滩相油气储层预测方法研究[J].石油地球物理勘探,2008,43(6):685-688,716.CAI Hanpeng,HE Zhenhua and HUANG Deji.Study on method for prediction of coral shoal facies oil/gas reservoir[J].Oil Geophysical Prospecting,2008,43(6):685-688,716.
[11]
刘国萍,游瑜春,冯琼.基于频谱成像技术的元坝长兴组生物礁储层连通性研究[J].石油物探,2017,56(5):746-754.LIU Guoping,YOU Yuchun and FENG Qiong.Research on reservoir connectivity based on spectral i-maging technology for the Changxing reef in the Yuanba area[J].Geophysical Prospecting for Petroleum,2017,56(5):746-754.
[12]
纪学武,张延庆,臧殿光,等.四川龙岗西区碳酸盐岩礁、滩体识别技术[J].石油地球物理勘探,2012,47(2):309-314.JI Xuewu,ZHANG Yanqing,ZANG Dianguang,et al.Carbonate reef-shoal reservoir identification in western Longgang,Sichuan Basin[J].Oil Geophysical Prospecting,2012,47(2):309-314.
[13]
李金磊,陈祖庆,王良军,等.相控技术在低勘探区生屑滩相储层预测中的应用[J].岩性油气藏,2017,29(3):110-117.LI Jinlei,CHEN Zuqing,WANG Liangjun,et al.Application of facies-controlled technique to bioclastic shoal reservoir prediction in less well zones[J].Lithologic Reservoirs,2017,29(3):110-117.
[14]
陈汉军,吴亚军.川北阆中-南部地区茅口组礁滩相储层预测[J].天然气工业,2008,28(11):22-25.CHEN Hanjun,WU Yajun.Prediction on reef flat facies reservoir in the Maokou Formation,Nanbu area of Langzhong in north Sichuan Basin[J].Natural Gas Industry,2008,28(11):22-25.
[15]
杨占龙,沙雪梅,魏立花,等.地震隐性层序界面识别、高频层序格架建立与岩性圈闭勘探——以吐哈盆地西缘侏罗系-白垩系为例[J].岩性油气藏,2019,31(6):1-13.YANG Zhanlong,SHA Xuemei,WEI Lihua,et al.Seismic subtle sequence boundary identification,high-frequency sequence framework establishment and lithologic trap exploration:a case study of Jurassic to Cretaceous in the western margin of Turpan-Kumul Basin[J].Lithologic Reservoirs,2019,31(6):1-13.
[16]
Zhong G F,Li Y L,Liu D J.Seismic sequence strati-graphy and sedimentary evaluation of carbonate reservoirs in the Sinan Dengying Formation,Middle Sichuan Basin,Southwest China[J].Interpretation,2013,1(1):SA21-SA34.
[17]
郭娟娟,许学龙,黄林军,等.火山岩岩相多方法逐级识别技术[J].石油地球物理勘探,2018,53(1):169-177.GUO Juanjuan,XU Xuelong,HUANG Linjun,et al.Volcanic rock lithofacies identification step-by-step with multi-methods[J].Oil Geophysical Prospecting,2018,53(1):169-177.
[18]
刘小洪,刘畅,李宁辛,等.差异型碳酸盐岩缓坡特征及沉积格局——以川西地区中二叠统栖霞组-茅口组为例[J].西安科技大学学报,2017,37(2):242-250.LIU Xiaohong,LIU Chang,LI Ningxin,et al.Depositional characters and framework of differential carbonate ramp in Qixia and Maokou formation,the Middle Permian of western Sichuan Basin[J].Journal of Xi'an University of Science and Technology,2017,37(2):242-250.
[19]
郝毅,姚倩颖,田瀚,等.四川盆地二叠系茅口组沉积特征及储层主控因素[J].海相油气地质,2020,25(3):202-209.HAO Yi,YAO Qianying,TIAN Han,et al.Sedimentary characteristics and reservoir-controlling factors of the Permian Maokou Formation in Sichuan Basin[J].Marine Origin Petroleum Geology,2020,25(3):202-209.
[20]
李蓉,胡昊,石国山,等.川东北阆中地区二叠系茅口组白云岩化成因[J].新疆石油地质,2020,41(2):127-132.LI Rong,HU Hao,SHI Guoshan,et al.Genesis of dolomitization of Permian Maokou formation in Langzhong area,Northeastern Sichuan Basin[J].Xinjiang Petroleum Geology,2020,41(2):127-132.
[21]
苏建龙,蒲勇,缪志伟,等.元坝地区灯影组四段丘滩体相控储层预测[J].石油物探,2020,59(4):607-615.SU Jianlong,PU Yong,MIAO Zhiwei,et al.Facies-controlled reservoir prediction for the bioherm beach of the fourth member of Dengying formation in the Yuanba area,China[J].Geophysical Prospecting for Petroleum,2020,59(4):607-615.
[22]
胡明毅,胡忠贵,魏国齐,等.四川盆地茅口组层序岩相古地理特征及储集层预测[J].石油勘探与开发,2012,39(1):45-55.HU Mingyi,HU Zhonggui,WEI Guoqi,et al.Sequence lithofacies paleogeography and reservoir prediction of the Maokou Formation in Sichuan Basin[J].Petroleum Exploration and Development,2012,39(1):45-55.
[23]
黄诚,傅恒,房晓璐,等.生物礁内部地震反射特征的地质解读及以体系域为单元的层序地层学认识——以珠江口盆地生物礁为例[J].海相油气地质,2011,16(2):47-52.HUANG Cheng,FU Heng,FANG Xiaolu,et al.The geological interpretation of seismic reflection characteristics within reefs and the understanding of sequence stratigraphy with system tract as a unit:A case of organic reef reservoirs in Pearl River Mouth Basin[J].Marine Origin Petroleum Geology,2011,16(2):47-52.
[24]
李劲松,于豪,李文科,等.高石梯-磨溪地区寒武系储层主控因素的地震地层学解释[J].石油地球物理勘探,2019,54(1):208-216.LI Jinsong,YU Hao,LI Wenke,et al.Seismic stratigraphy interpretation of main control factors of Cambrian reservoirs in Gaoshiti-Moxi Area[J].Oil Geophysical Prospecting,2019,54(1):208-216.
[25]
钱荣钧.对地震切片解释中一些问题的分析[J].石油地球物理勘探,2007,42(4):482-487.QIAN Rongjun.Analysis of some issues in interpretation of seismic slices[J].Oil Geophysical Prospecting,2007,42(4):482-487.
[26]
刘化清,倪长宽,陈启林,等.地层切片的合理性及影响因素[J].天然气地球科学,2014,25(11):1821-1829.LIU Huaqing,NI Changkuan,CHEN Qilin,et al.Rationality and influencing factors of strata slicing[J].Natural Gas Geoscience,2014,25(11):1821-1829.
杨占龙.地震地貌切片解释技术及应用[J].石油地球物理勘探,2020,55(3):669-677.YANG Zhanlong.Interpretation technique of seismic geomorphological slice and its application[J].Oil Geo-physical Prospecting,2020,55(3):669-677.
[29]
张军华,刘杨,林承焰,等.甜点地震属性理论诠释及应用[J].石油地球物理勘探,2018,53(2):355-360.ZHANG Junhua,LIU Yang,LIN Chengyan,et al.Theoretical annotation and application of sweetness[J].Oil Geophysical Prospecting,2018,53(2):355-360.
[30]
刘曾勤,王英民,白广臣,等.甜点及其融合属性在深水储层研究中的应用[J].石油地球物理勘探,2010,45(增刊1):158-162.LIU Zengqin,WANG Yingmin,BAI Guangchen,et al.Application of sweetness and its fusion attribute in the research of deep-water reservoir[J].Oil Geophysical Prospecting,2010,45(S1):158-162.
