复合曲流河道内的单河道识别
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摘要
随着油气田开发程度的深入,复合河道砂体尺度的研究难以满足生产需求,需要开展单河道砂体边界的识别。埕海一区明化镇组曲流河河道频繁地决口、改道和侧向迁移,复合河道砂体较为发育。依据单河道砂体接触部位地震波形及振幅发生变化的特点,首先利用边缘检测属性突出岩性变化引起的振幅响应,识别出单河道的边界;再利用倾角方位属性能够反映地震波形的细微变化,预测单河道的侧向迁移方向;借助上述方法识别研究区单河道的边界,并且精确预测了单河道点坝砂体的具体位置。预测结果与钻井吻合程度较高,有效地指导了井网关系调整及剩余油挖潜,也为类似地区的单河道识别与划分提供了一种新的方法。
With the oilfield development,the composite channel sand description is not enough for the oil production,so it is necessary to carry out the identification of single-channel sand boundaries.Composite channel sand bodies were well developed as the meandering river in District 1 of Chenghai encountered frequent breachs,diversions and lateral migrations.First we highlight amplitude response caused by lithology with the edge detection attribute based on characteristics of waveform and amplitude variations at single channel sand bodies,and identify single-channel boundaries.Then we use DipAzi attribute to find out slight changes of waveforms and predict the lateral migration direction of every single channel.Single-channel boundaries can be identified together with these two attributes,and accretion sand positions in a single channel can be accurately predicted.Our prediction matches very well with the later drilling,which is helpful for the remaining oil production in the study area and provides a new idea for the single channel recognition.
With the oilfield development,the composite channel sand description is not enough for the oil production,so it is necessary to carry out the identification of single-channel sand boundaries.Composite channel sand bodies were well developed as the meandering river in District 1 of Chenghai encountered frequent breachs,diversions and lateral migrations.First we highlight amplitude response caused by lithology with the edge detection attribute based on characteristics of waveform and amplitude variations at single channel sand bodies,and identify single-channel boundaries.Then we use DipAzi attribute to find out slight changes of waveforms and predict the lateral migration direction of every single channel.Single-channel boundaries can be identified together with these two attributes,and accretion sand positions in a single channel can be accurately predicted.Our prediction matches very well with the later drilling,which is helpful for the remaining oil production in the study area and provides a new idea for the single channel recognition.
引文
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[21]赵炜,辛维,毛中华,等.利用单井微地震波形能量反演震源机制[J].石油地球物理勘探,2018,53(5):945-953.ZHAO Wei,XIN Wei,MAO Zhonghua,et al.Inversion of focal mechanism using single well microseismic wave energy[J].Oil Geophysical Prospecting,2018,53(5):945-953.
[22]杨春,王赟,陈业全,等.双相介质薄砂层的地震反射特征分析[J].石油物探,2018,57(2):186-197.YANG Chun,WANG Yun,CHEN Yequan,et al.Characteristic analysis of seismic reflections from a thin sand reservoir in two-phase media[J].Geophysical Prospecting for Petroleum,2018,57(2):186-197.
[23]吴晓川,张功成,蒲仁海.琼东南盆地碟形侵入体的地震响应特征及油气意义[J].石油地球物理勘探,2018,53(3):528-537.WU Xiaochuan,ZHANG Gongcheng,PU Renhai.Seismic characteristics and hydrocarbon significance of saucer-shaped intrusions in Qiongdongnan Basin[J].Oil Geophysical Prospecting,2018,53(3):528-537.
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[2]朱石磊,杨瑞召,刘志斌,等.密集井网下随机地震反演方案及砂体预测[J].石油地球物理勘探,2018,53(2):361-368.ZHU Shilei,YANG Ruizhao,LIU Zhibin,et al.Stochastic seismic inversion scheme and sand body prediction in dense well pattern areas[J].Oil Geophysical Prospecting,2018,53(2):361-368.
[3]朱丽红,杜庆龙,姜雪岩,等.陆相多层砂岩油藏特高含水期三大矛盾特征及对策[J].石油学报,2015,36(2):210-216.ZHU Lihong,DU Qinglong,JIANG Xueyan,et al.Characteristics and strategies of three major cinteadictions for continental facies multi-layered sandstone reservoir at ultra-high water cut stage[J].Acta Petrolei Sinica,2015,36(2):210-216.
[4]宁士华,肖斐,束宁凯.特高含水开发期曲流河储层构型深化研究及应用[J].断块油气田,2013,20(3):354-358.NING Shihua,XIAO Fei,SHU Ningkai.Deepening research and application of meandering river reservoir configuration at extra-high water cut development period[J].Fault-Block Oil&Gas Field,2013,20(3):354-358.
[5]王凤兰,白振强,朱伟.曲流河砂体内部构型及不同开发阶段剩余油分布研究[J].沉积学报,2011,29(3):512-519.WANG Fenglan,BAI Zhenqiang,ZHU Wei.Study on geological 3Dreservoir architecture modeling and distribution of remaining oil of different development stage in meandering reservoir[J].Acta Sedimentologica Sinica,2011,29(3):512-519.
[6]张秀丽,姜岩,郝兰英,等.密井网条件下随机地震反演及其在河道砂体预测中的应用[J].石油地球物理勘探,2014,49(5):955-963.ZHANG Xiuli,JIANG Yan,HAO Lanying,et al.Stochastic seismic inversion and channel sandbody prediction in dense well pattern areas[J].Oil Geophysical Prospecting,2014,49(5):955-963.
[7]张友,侯加根,曹彦清,等.基于构型单元的储层质量分布模式---以胜坨油田二区沙二段8砂组厚层河口坝砂体为例[J].石油与天然气地质,2015,36(5):862-872.ZHANG You,HOU Jiagen,CAO Yanqing,et al.Distribution patterns of reservoir quality based on configuration unit of mouth bar sandbody:A case study from the 8th sand group of the 2nd member of the Shahejie Formation in Shenger Block of Shengtuo Oilfield,East China[J].Oil&Gas Geology,2015,36(5):862-872.
[8]王晖,胡光义,范红军,等.边际油田河流相储集层表征关键技术[J].石油勘探与开发,2012,39(5):626-632.WANG Hui,HU Guangyi,FAN Hongjun,et al.Key technologies for the fluvial reservoir characterization of marginal oilfields[J].Petroleum Exploration and Development,2012,39(5):626-632.
[9]闵小刚,陈开远,范廷恩.井-震结合进行河流相储层非均质性表征---以渤海湾盆地黄河口凹陷渤中263油田为例[J].石油与天然气地质,2011,32(3):375-381.MIN Xiaogang,CHEN Kaiyuan,FAN Tingen.Heterogeneity characterization of fluvial facies reservoirs through integration of seismic and logging data:An example from Bozhong-263oilfield in the Huanghekou Sag,the Bohai Bay Basin[J].Oil&Gas Geology,2011,32(3):375-381.
[10]肖佃师,张飞飞,卢双舫,等.井震联合识别复合砂体中单一河道---以朝44区块扶余油层为例[J].石油地球物理勘探,2016,51(1):148-157.XIAO Dianshi,ZHANG Feifei,LU Shuangfang,et al.Single channel identification in compound sand bodies by well and seismic data integration:An example in area of Chao 44region,Fuyu Oilfield[J].Oil Geophysical Prospecting,2016,51(1):148-157.
[11]单敬福,张彬,赵忠军,等.复合辫状河道期次划分方法与沉积演化过程分析---以鄂尔多斯盆地苏里格气田西区苏X区块为例[J].沉积学报,2015,33(4):773-785.SHAN Jingfu,ZHANG Bin,ZHAO Zhongjun,et al.Single stage and sedimentary evolution process analysis of braided river:A case from Su X block of western Sulige Gas Field in Ordos Basin[J].Acta Sedimentologica Sinica,2015,33(4):773-785.
[12]胡光义,陈飞,范廷恩,等.渤海海域S油田新近系明化镇组河流相复合砂体叠置样式分析[J].沉积学报,2014,32(3):586-592.HU Guangyi,CHEN Fei,FAN Tingen,et al.Analysis of fluvial facies compound sandbody architecture of the Neogene Minghuazhen Formation of S Oilfield in the Bohai Bay[J].Acta Sedimentologica Sinica,2014,32(3):586-592.
[13]李占东,王殿举,张海翔,等.松辽盆地南部东南隆起区白垩系泉头组典型河流相沉积特征[J].石油与天然气地质,2015,36(4):621-629.LI Zhandong,WANG Dianju,ZHANG Haixiang,et al.Sedimentary characteristics of typical fluvial facies in the Cretaceous Quantou Formation in southeast uplift of southern Songliao Basin[J].Oil&Gas Geology,2015,36(4):621-629.
[14]李军,宋新民,薛培华,等.扶余油田杨大城子组曲流河相油藏单砂体层次细分及成因[J].石油与天然气地质,2010,31(1):119-125.LI Jun,SONG Xinmin,XUE Peihua,et al.Hierarchical subdivision and origin of single sandbody in the reservoirs of meandering river facies in the Yangdachengzi Formation of Fuyu Oilfield[J].Oil&Gas Geology,2010,31(1):119-125.
[15]王越,陈世悦.曲流河砂体构型及非均质性特征---以山西保德扒楼沟剖面二叠系曲流河砂体为例[J].石油勘探与开发,2016,43(2):209-218.WANG Yue,CHEN Shiyue.Meandering river sand body architecture and heterogeneity:A case study of Permian meandering river outcrop in Palougou,Baode,Shanxi province[J].Petroleum Exploration and Development,2016,43(2):209-218.
[16]夏竹,李中超,贾瑞忠,等.井震联合薄储层沉积微相表征实例研究[J].石油地球物理勘探,2016,51(5):1002-1011.XIA Zhu,LI Zhongchao,JIA Ruizhong,et al.Thin reservoir sedimentary microfacies characterization based on well logging and seismic data:A case study[J].Oil Geophysical Prospecting,2016,51(5):1002-1011.
[17]李建雄,谷跃民,党虎强,等.高密度井网开发区井震联合储层预测方法---以SL盆地JN2区块为例[J].石油地球物理勘探,2011,46(3):457-462.LI Jianxiong,GU Yuemin,DANG Huqiang,et al.Well seismic and surface seismic joint prediction for reservoir rock in a development area with denser producers:Case study of Block JN2in SL Basin[J].Oil Geophysical Prospecting,2011,46(3):457-462.
[18]王永莉,周赏,高晓理,等.灵活运用振幅属性预测储层[J].石油地球物理勘探,2012,47(增刊1):78-83.WANG Yongli,ZHOU Shang,GAO Xiaoli,et al.Reservoir prediction by amplitude attributes[J].Oil Geophysical Prospecting,2012,47(S1):78-83.
[19]陈恭洋,陈玲,朱洁琼,等.地震属性分析在河流相储层预测中的应用[J].西南石油大学学报(自然科学版),2012,34(3):1-8.CHEN Gongyang,CHEN Ling,ZHU Jieqiong,et al.Application of seismic attributes analysis fluvial reservoir to prediction[J].Journal of Southwest Petroleum University:Science&Technology Edition,2012,34(3):1-8.
[20]李伟,岳大力,胡光义,等.分频段地震属性优选及砂体预测方法---秦皇岛32-6油田北区实例[J].石油地球物理勘探,2017,52(1):121-130.LI Wei,YUE Dali,HU Guangyi,et al.Frequency-segmented seismic attribute optimization and sandbody distribution prediction:An example in North Block,Qinhuangdao 32-6Oilfield[J].Oil Geophysical Prospecting,2017,52(1):121-130.
[21]赵炜,辛维,毛中华,等.利用单井微地震波形能量反演震源机制[J].石油地球物理勘探,2018,53(5):945-953.ZHAO Wei,XIN Wei,MAO Zhonghua,et al.Inversion of focal mechanism using single well microseismic wave energy[J].Oil Geophysical Prospecting,2018,53(5):945-953.
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