基于地震子波衰减谱的碳酸盐岩烃类检测方法
详细信息 本馆镜像全文    |  推荐本文 | | 获取馆网全文
摘要
针对碳酸盐岩储层,根据含油气地层对地震波高频成分吸收增强、吸收系数增大的原理,提出了基于地震子波衰减谱的烃类检测技术。该技术在对地震资料进行去噪的基础上,应用复倒谱匹配法分别求取目的层上、下沿层时窗内的地震子波谱,进而求取上下时窗地震子波衰减谱。通过衰减谱进行碳酸盐岩储层烃类检测。在Y2井区碳酸盐岩储层的实际应用中,与基于目的层的烃类检测技术相比较,该技术敏感性较高,能够有效地预测碳酸盐岩储层的油气分布,对井位部署和油气增储上产具有指导作用。
Moving through hydrocarbon formations,seismic wave may result in energy attenuation and high frequency loss for the sake of imperfect elasticity.A new hydrocarbon detection technique was presented based on a theory of this energy attenuation and high frequency loss.A wavelet spectrum of each trace from a horizon consistent time window both above and below the zone of interest was estimated by cepstrum matching after reducing noise of seismic data.Then attenuation spectrum of windows above and below the zone of interest was estimated by the wavelet spectrum.This attenuation spectrum can be used to detect hydrocarbons in carbonate reservoirs.This technique was applied to carbonate reservoirs in the Y2 well region.Compared with the hydrocarbon detection based on seismic data of interest beds,this hydrocarbon detection technique has more sensitivity and accuracy in hydrocarbon detection of carbonate reservoirs,which helps to geometrically arrange wells and increase the production and revise of hydrocarbons.
引文
[1]Goodway W,Chen T,Downton J.Improved AVO fluid detectionand lithology discrimination using Lame petrophysical parame-ters from P and S inversion:SEG International Exposition and67th Annual Meeting,Dallas,1997[C].Tulsa:Society of Explo-ration Geophysicists,1997.
    [2]Russell B H,Hedlin K.Fluid-property discrimination with AVO:a Biot-Gassman perspective[J].Geophysics,2003,68(1):29-39.
    [3]高建虎,雍学善.利用地震子波进行油气检测[J].天然气地球科学,2004,15(1):47-50.Gao Jianhu,Yong Xuesha.Appling the wavelet to detect hydro-carbon[J].Natural Gas Geoscience,2004,15(1):47-50.
    [4]刘洋.利用地震资料估算孔隙度和饱和度的一种新方法[J].石油学报,2005,26(2):61-64.Liu Yang.A new approach to estimation of porosity and saturationwith seismic data[J].Acta Petrolei Sinica,2005,26(2):61-64.
    [5]金龙,陈小宏,姜香云.利用地震资料定量反演孔隙度和饱和度的新方法[J].石油学报,2006,27(4):63-66Jin Long,Chen Xiaohong,Jiang Xiangyun.Simultaneous inver-sion of porosity and saturation using seismic data[J].Acta Petro-lei Sinica,2006,27(4):63-66.
    [6]张宏,郑浚茂,杨道庆,等.塔中卡塔克区块古岩溶储层地震预测技术[J].石油学报,2008,29(1):69-74.Zhang Hong,Zheng Junmao,Yang Daoqing,et al.Prediction ofpaleokarst reservoir in the southeastern slope of Tazhong area inTarim Basin using seismic techniques[J].Acta Petrolei Sinica,2008,29(1):69-74.
    [7]裴健翔,于俊峰,王立锋.莺歌海盆地中深层天然气勘探的关键问题及对策[J].石油学报,2011,32(4):573-579.Pei Jianxiang,Yu Junfeng.Wang Lifeng,et al.Key challenges andstrategies for the success of natural gas exploration in mid-deep stra-ta of the Yinggehai Basin[J].Acta Petrolei Sinica,2011,32(4):573-579.
    [8]李鲲鹏,刘业新,李衍达.用小波变换和多项式拟合提高地震资料分辨率[J].清华大学学报:自然科学版,1997,37(3):60-63.Li Kunpeng,Liu Yexin,Li Yanda.Improving seismic section res-olution by wavelet transform and polynomial fitting[J].Journalof Tsinghua University:Science and Technology,1997,37(3):60-63.
    [9]陆文凯,李衍达.用二维复倒谱提高地震资料的分辨率[J].石油地球物理勘探,1998,33(增刊1):129-133.Lu Wenkai,Li Yanda.Applying 2D cepstral to improve resolutionof seismic data[J].Oil Geophysical Prospecting,1998,33(S1):129-133.
    [10]张华,陈小宏,杨海燕.地震信号去噪的最优小波基选取方法[J].石油地球物理勘探,2011,46(1):70-75.Zhang Hua,Chen Xiaohong,Yang Haiyan.Optimistic waveletbasis selection in seismic signal noise elimination[J].Oil Geo-physical Prospecting,2011,46(1):70-75.
    [11]杨培杰,印兴耀.地震子波提取方法综述[J].石油地球物理勘探,2008,43(1):123-128.Yang Peijie,Yin Xingyao.Summary of seismic wavelet pick-up[J].Oil Geophysical Prospecting,2008,43(1):123-128.
    [12]Leinbach J.Wiener spiking deconvolution and minimum phasewavelets[J].The Leading Edge,1995,14:189-192.
    [13]林承焰,张宪国,董春梅.地震沉积学及其初步应用[J].石油学报,2007,28(2):69-72.Lin Chengyan,Zhang Xianguo,Dong Chunmei.Concept of seis-mic sedimentology and its preliminary application[J].Acta Pe-trolei Sinica,2007,28(2):69-72.
    [14]Dilay A,Eastwood J.Spectral analysis applied to seismic monitoringof thermal recovery[J].The Leading Edge,1995,14:1117-1122.
    [15]黄捍东,曹学虎,罗群.地震沉积学在生物礁滩预测中的应用——以川东褶皱带建南—龙驹坝地区为例[J].石油学报,2011,32(4):629-636.Huang Handong,Cao Xuehu,Luo Qun.An application of seismicsedimentology in predicting organic reefs and banks:a case studyon the Jiannan-Longjuba region of the eastern Sichuan fold belt[J].Acta Petrolei Sinica,2011,32(4):629-636.
    [16]王任一,梅廉夫.利用独立分量分析技术对油气富集区进行地震识别[J].石油学报,2008,29(4):544-548.Wang Renyi,Mei Lianfu.Seismic identification of oil-gas accumu-lation area using independent component analysis technique[J].Acta Petrolei Sinica,2008,29(4):544-548.
    [17]王建功,王天琦,张顺,等.松辽坳陷盆地水侵期湖底扇沉积特征及地球物理响应[J].石油学报,2009,30(3):361-366.Wang Jiangong,Wang Tianqi,Zhang Shun,et al.Sedimentarycharacteristics and geophysical response of sublacustrine fan dur-ing transgress period in Songliao Basin[J].Acta Petrolei Sinica,2009,30(3):361-366.

版权所有:© 2021 中国地质图书馆 中国地质调查局地学文献中心