宽方位地震技术与隐蔽油气藏勘探
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摘要
宽方位地震技术即是横向接收单元尺寸与纵向接收单元尺寸之比大于0.5时的三维地震采集、处理技术。由于宽方位地震技术的方位角分布全、炮检距从小到大分布均匀,因此,宽方位地震资料中蕴含着更为丰富的信息,有助于识别微幅构造、小断层和高角度裂缝。介绍了济阳坳陷罗42地区、商741地区和准噶尔盆地中部Ⅰ区块庄1井区宽方位地震采集处理技术,并对比分析了利用宽方位地震资料预测泥页岩裂缝油气藏和火成岩裂缝系统发育带以及在庄1井区描述砂体的效果。分析认为,宽方位地震技术在研究具有各向异性特点、非均质性强的地质目标体时效果明显,但对于地质目标体为砂岩体和各向异性特点不突出的储层预测,宽方位地震资料在对砂岩体的识别能力和对物性参数的反演精度等方面并无明显优势。
Wide azimuth seismic is a kind of 3-D seismic data acquisition-processing technique with the ratio between transverse and longitudinal receiver unit larger than 0.5.Wide azimuth seismic is characterized by whole distribution of azimuth angle and even distribution of offset.Thus wide azimuth seismic data contains more information,which is helpful for identifying micro-relief structure,small faults and high-angle fractures.We introduced the wide azimuth seismic acquisition and processing examples in Luo42 area and Shang741 area of Jiyang Depression,and Zhuang1 well area in central Junggar Basin.Moreover,wide azimuth seismic data was applied for predicting shale fractured reservoir and igneous rock fracture development belt,as well as characterizing the sand bodies in Zhuang1 well area.Results indicate that wide azimuth seismic is effective for the geologic bodies with anisotropy and strong heterogeneity,but there is no advantage for identifying sand bodies and inversing physical properties by using wide azimuth seismic data when the geologic target of reservoir prediction is sand bodies and the reservoirs without strong anisotropy.
Wide azimuth seismic is a kind of 3-D seismic data acquisition-processing technique with the ratio between transverse and longitudinal receiver unit larger than 0.5.Wide azimuth seismic is characterized by whole distribution of azimuth angle and even distribution of offset.Thus wide azimuth seismic data contains more information,which is helpful for identifying micro-relief structure,small faults and high-angle fractures.We introduced the wide azimuth seismic acquisition and processing examples in Luo42 area and Shang741 area of Jiyang Depression,and Zhuang1 well area in central Junggar Basin.Moreover,wide azimuth seismic data was applied for predicting shale fractured reservoir and igneous rock fracture development belt,as well as characterizing the sand bodies in Zhuang1 well area.Results indicate that wide azimuth seismic is effective for the geologic bodies with anisotropy and strong heterogeneity,but there is no advantage for identifying sand bodies and inversing physical properties by using wide azimuth seismic data when the geologic target of reservoir prediction is sand bodies and the reservoirs without strong anisotropy.
引文
[1]王焕弟,牛滨华,任敦占,等.隐蔽油气藏勘探现状与对策分析[J].石油地球物理勘探,2004,39(6):739-741Wang H D,Niu B H,Ren D Z,et al.Present condi-tions of subtle traps exploration and analyses of a-dapted measures[J].Oil Geophysical Prospecting,2004,39(6):739-741
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[7]凌云研究小组.宽方位角地震勘探应用研究[J].石油地球物理勘探,2003,38(4):350-357Ling Yun Study Group.Application and study onwide-azimuth seismic exploration[J].Oil Geophysi-cal Prospecting,2003,38(4):350-357
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[9]凌云,高军,孙德胜,等.宽/窄方位角勘探实例分析与评价(一)[J].石油地球物理勘探,2005,40(3):305-307Ling Y,Gao J,Sun D S,et al.Analysis and apprecia-tion of wide/narrow azimuth exploration cases(Ⅰ)[J].Oil Geophysical Prospecting,2005,40(3):305-307
[10]凌云,吴琳,陈波,等.宽/窄方位角勘探实例分析与评价(二)[J].石油地球物理勘探,2005,40(4):305-307Ling Y,Wu L,Chen B,et al.Analysis and apprecia-tion of wide/narrow azimuth exploration cases(II)[J].Oil Geophysical Prospecting,2005,40(4):305-307
[11]彭文利,仲伟军,杨迪生,等.准噶尔盆地宽方位角地震应用效果分析[J].新疆地质,2005,23(2):173-179Peng W L,Zhong W J,Yang D S,et al.The applica-tion of the wide azimuth angle 3-D seismic explora-tion in junggarbasin,Xinjiang,China[J].XinjiangGeology,2005,23(2):173-179
[12]张春广,丛培泓,田军,等.宽方位角地震资料解释技术及应用[J].天然气工业,2007,27(增刊A):152-154Zhang C G,Cong P H,Tian J,et al.Application ofthe wide azimuth seismic interpretation technology[J].Gas Industry,2007,27(S1):152-154
[13]李全胜,张峰.吐哈胜北地区宽方位角地震资料应用[J].吐哈油气,2005,10(4):320-325Li Q S,Zhang F.Application of the wide azimuthseismic data in Shengbei of Tuha[J].TuhaOil&Gas,2005,10(4):320-325
[14]Thomsen L.Understanding seismic anisotropy in en-ploration and exploitation[J].Expanded Abstracts of72nd Annual Internat SEG Mtg,2002,2-43
[15]Sigernes L,Morton A,Tjaland E.Seismic fault ima-ging[J].Expanded Abstracts of 72nd Annual InternatSEG Mtg,2002,516-519
[16]张军华,朱焕,郑旭刚,等.宽方位角地震勘探技术评述[J].石油地球物理勘探,2007,42(5):603-609Zhang J H,Zhu H,Zheng X G,et al.Summary ofwide-azimuth seismic exploration technique[J].OilGeophysical Prospecting,2007,42(5):603-609
[17]吴安楚.宽方位三维地震采集设计技术及应用[J].油气地质与采收率,2009,16(3):65-67Wu A C.Acquisition design technique with wide azi-muth seismic and its application[J].Petroleum Geol-ogy and Recovery Efficiency,2009,16(3):65-67
[18]田梦,张梅生,万传彪,等.宽方位角地震勘探与常规地震勘探对比研究[J].大庆石油地质与开发,2007,26(6):138-141Tian M,Zhang M S,Wan C B,et al.Contrast re-search between wide azimuth seismic exploration andconvention seismic exploration[J].PetroleumGeology&Oilfield Development in Daqing,2007,26(6):138-141
[2]陈冬霞,庞雄奇,邱楠生,等.砂岩透镜体成藏机理[J].地球科学(中国地质大学学报),2004,29(4):483-485Chen D X,Pang X Q,Qiu N S,et al.Accumulationand filling mechanism of lenticular sandbody reser-voirs[J].Earth Science(Journal of China Universityof Geosciences),2004,29(4):483-485
[3]陈冬霞,庞雄奇,姜振学.透镜体油气成藏机理研究现状与发展趋势[J].地球科学进展,2002,17(6):871-875Chen D X,Pang X Q,Jiang Z X.The actuality anddeveloping trend in study on the accumulationalmechanism of the lens reservoir[J].Advance inEarth Sciences,2002,17(6):871-875
[4]李丕龙,张善文,宋国奇,等.断陷盆地隐蔽油气藏形成机制[J].石油实验地质,2004,26(1):3-10Li P L,Zhang S W,Song G Q,et al.Forming mecha-nism of subtle oil pools in fault basins—taking theJiyang Depression of the Bohaiwan basin as an ex-ample[J].Petroleum Geology&Experiment,2004,26(1):3-10
[5]喻建,宋江海,向惠.鄂尔多斯盆地中生界隐蔽性油气藏成藏规律[J].天然气工业,2004,24(12):35-37Yu J,Song J H,Xiang H.Subtle reservoir formationlaw of mesozoic in E'erduosi Basin[J].Natural GasIndustry,2004,24(12):35-37
[6]雷德文,吕焕通,黄永平,等.准噶尔盆地腹部二次三维地震勘探主要技术与效果[J].新疆石油地质,2005,26(5):510-512Lei D W,Lv H T,Huang Y P,et al.Results andtechnologies of second-time 3Dseismic prospectingin Hinterland of Junggar Basin[J].Xinjiang Petrole-um Geology,2005,26(5):510-512
[7]凌云研究小组.宽方位角地震勘探应用研究[J].石油地球物理勘探,2003,38(4):350-357Ling Yun Study Group.Application and study onwide-azimuth seismic exploration[J].Oil Geophysi-cal Prospecting,2003,38(4):350-357
[8]李庆忠.对宽方位角三维采集不要盲从——到底什么叫“全三维采集”[J].石油地球物理勘探,2001,36(1):122-124Li Q Z.Don't follow blindly wide azimuth 3-D acqui-sition——what on earth is“full 3-D acquisition”[J].Oil Geophysical Prospecting,2001,36(1):122-124
[9]凌云,高军,孙德胜,等.宽/窄方位角勘探实例分析与评价(一)[J].石油地球物理勘探,2005,40(3):305-307Ling Y,Gao J,Sun D S,et al.Analysis and apprecia-tion of wide/narrow azimuth exploration cases(Ⅰ)[J].Oil Geophysical Prospecting,2005,40(3):305-307
[10]凌云,吴琳,陈波,等.宽/窄方位角勘探实例分析与评价(二)[J].石油地球物理勘探,2005,40(4):305-307Ling Y,Wu L,Chen B,et al.Analysis and apprecia-tion of wide/narrow azimuth exploration cases(II)[J].Oil Geophysical Prospecting,2005,40(4):305-307
[11]彭文利,仲伟军,杨迪生,等.准噶尔盆地宽方位角地震应用效果分析[J].新疆地质,2005,23(2):173-179Peng W L,Zhong W J,Yang D S,et al.The applica-tion of the wide azimuth angle 3-D seismic explora-tion in junggarbasin,Xinjiang,China[J].XinjiangGeology,2005,23(2):173-179
[12]张春广,丛培泓,田军,等.宽方位角地震资料解释技术及应用[J].天然气工业,2007,27(增刊A):152-154Zhang C G,Cong P H,Tian J,et al.Application ofthe wide azimuth seismic interpretation technology[J].Gas Industry,2007,27(S1):152-154
[13]李全胜,张峰.吐哈胜北地区宽方位角地震资料应用[J].吐哈油气,2005,10(4):320-325Li Q S,Zhang F.Application of the wide azimuthseismic data in Shengbei of Tuha[J].TuhaOil&Gas,2005,10(4):320-325
[14]Thomsen L.Understanding seismic anisotropy in en-ploration and exploitation[J].Expanded Abstracts of72nd Annual Internat SEG Mtg,2002,2-43
[15]Sigernes L,Morton A,Tjaland E.Seismic fault ima-ging[J].Expanded Abstracts of 72nd Annual InternatSEG Mtg,2002,516-519
[16]张军华,朱焕,郑旭刚,等.宽方位角地震勘探技术评述[J].石油地球物理勘探,2007,42(5):603-609Zhang J H,Zhu H,Zheng X G,et al.Summary ofwide-azimuth seismic exploration technique[J].OilGeophysical Prospecting,2007,42(5):603-609
[17]吴安楚.宽方位三维地震采集设计技术及应用[J].油气地质与采收率,2009,16(3):65-67Wu A C.Acquisition design technique with wide azi-muth seismic and its application[J].Petroleum Geol-ogy and Recovery Efficiency,2009,16(3):65-67
[18]田梦,张梅生,万传彪,等.宽方位角地震勘探与常规地震勘探对比研究[J].大庆石油地质与开发,2007,26(6):138-141Tian M,Zhang M S,Wan C B,et al.Contrast re-search between wide azimuth seismic exploration andconvention seismic exploration[J].PetroleumGeology&Oilfield Development in Daqing,2007,26(6):138-141
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