川东北毛坝场构造飞仙关组三段裂缝预测
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摘要
对川东北毛坝地区的钻井资料进行研究发现,该区飞仙关组三段含气裂缝储层横向上呈不均匀分布,井位设计论证困难较大。通过对该区三维地震资料进行研究,得知该区断层发育,并对飞仙关组三段的裂缝发育有较大影响。飞三段岩性组合也使其容易产生裂缝。对此,首先利用井资料进行岩石物理正演模型研究,得到了飞仙关组三段裂缝含气储层的AVO响应特征;其次基于地震波在地下介质中传播所表现的各向异性,从叠前地震属性随方位角变化关系分析入手,表征和描述了研究区飞仙关组三段裂缝储层的分布特征,以此预测飞仙关组三段裂缝型储层发育情况。裂缝储层预测结果与钻井结果对应较好。
The well-drilling data from Maoba area in northeastern Sichuan Basin reveal that the gas-bearing fractured reservoirs in the third member of Feixianguan Formation are horizontally irregularly distributed,which leads to great difficulty in deployment of wells.3-D seismic data also imply that either the development of faults or the lithologic association has great influences on the development of fractures in the third member of Feixianguan Formation.A fracture predication method has been proposed.Firstly,the AVO responses of the reservoirs are obtained from rock physical modeling using well data.Secondly,the fractured reservoirs in the third member of Feixianguan Formation are characterized based on the analysis of the anisotropy of seismic waves and the variations of prestack seismic attributes with azimuths.The predicted result matches well with the drilling data.
The well-drilling data from Maoba area in northeastern Sichuan Basin reveal that the gas-bearing fractured reservoirs in the third member of Feixianguan Formation are horizontally irregularly distributed,which leads to great difficulty in deployment of wells.3-D seismic data also imply that either the development of faults or the lithologic association has great influences on the development of fractures in the third member of Feixianguan Formation.A fracture predication method has been proposed.Firstly,the AVO responses of the reservoirs are obtained from rock physical modeling using well data.Secondly,the fractured reservoirs in the third member of Feixianguan Formation are characterized based on the analysis of the anisotropy of seismic waves and the variations of prestack seismic attributes with azimuths.The predicted result matches well with the drilling data.
引文
1马永生,蔡勋育,李国雄,等.四川盆地普光大型气藏基本特征及成藏富集规律[J].地质学报,2005,79(6):858～865
2马永生,傅强,郭彤楼,等.川东北地区普光气田长兴—飞仙关气藏成藏模式与成藏过程[J].石油实验地质,2005,27(5):455～461
3贺振华,胡光岷,黄德济.致密储层裂缝发育带的地震识别及相应策略[J].石油地球物理勘探,2005,40(2):190～197
4季玉新.用地震资料检测裂缝性油气藏的方法[J].勘探地球物理进展,2002,25(5):28～35
5黄绪德,郭正吾.致密砂岩裂缝气藏的地震预测[J].石油物探,2000,39(2):2～13
6胡宗全,廖红伟,刘人和.分砂层地质曲率分析在裂缝预测中的应用[J].石油实验地质,2002,24(5):450～454
7陶洪辉,秦国伟,徐文波,等.地层主曲率在研究储层裂缝发育中的应用[J].新疆石油天然气,2005,1(2):22～23
8王学军,陈汉林,王玉芹,等.拟合曲率综合预测裂缝方法建立及其在陆西凹陷中的应用[J].浙江大学学报,2002,29(6):712～719
9刘书强,胡前泽.叠前裂缝检测技术浅谈[J].吐哈油气,2008,13(1):68～70
10Hudson J A.Wave speeds and attenuations of elastic waves in material containing cracks[J].Geophys J,1981,64:133～150
11Liu E,Li X Y.Seismic detection of fluid saturation in a-ligned fractures[J].Expanded Abstracts of70thAnnual International SEG Meeting,2000,2373～2375
12Shen F,Toksoz N.Scattering characteristics in heterogene-ous fractured reservoirs from waveform estimation[J].Geo-physical Journal International,2000,140:251～265
13Thomsen L.Elastic anisotropy due to aligned cracks in porous rock[J].Geophysical Prospecting,1995,43:805～829
14Shen F,Sierra J,Toksoz N.Offset-dependent attributes(AVO and FVO)applied to fracture detection[J].Ex-panded Abstracts of69thAnnual International SEG Meet-ing,1999,776～779
15曹均,贺振华,黄德济,等.裂缝储层地震波特征响应的物理模型实验研究[J].勘探地球物理进展,2003,26(2):88～92
16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):350～357
17曲寿利,季玉新,王鑫,等.全方位P波属性裂缝检测方法[J].石油地球物理勘探,2001,36(4):390～397
18李佳阳,夏宁,秦启荣.成像测井评价致密碎屑岩储层的裂缝与含气性[J].测井技术,2007,31(1):17～20
19张景和,孙宗欣.地应力、裂缝测井技术在石油勘探开发中的应用[M].北京:石油工业出版社,2001.35～40
2马永生,傅强,郭彤楼,等.川东北地区普光气田长兴—飞仙关气藏成藏模式与成藏过程[J].石油实验地质,2005,27(5):455～461
3贺振华,胡光岷,黄德济.致密储层裂缝发育带的地震识别及相应策略[J].石油地球物理勘探,2005,40(2):190～197
4季玉新.用地震资料检测裂缝性油气藏的方法[J].勘探地球物理进展,2002,25(5):28～35
5黄绪德,郭正吾.致密砂岩裂缝气藏的地震预测[J].石油物探,2000,39(2):2～13
6胡宗全,廖红伟,刘人和.分砂层地质曲率分析在裂缝预测中的应用[J].石油实验地质,2002,24(5):450～454
7陶洪辉,秦国伟,徐文波,等.地层主曲率在研究储层裂缝发育中的应用[J].新疆石油天然气,2005,1(2):22～23
8王学军,陈汉林,王玉芹,等.拟合曲率综合预测裂缝方法建立及其在陆西凹陷中的应用[J].浙江大学学报,2002,29(6):712～719
9刘书强,胡前泽.叠前裂缝检测技术浅谈[J].吐哈油气,2008,13(1):68～70
10Hudson J A.Wave speeds and attenuations of elastic waves in material containing cracks[J].Geophys J,1981,64:133～150
11Liu E,Li X Y.Seismic detection of fluid saturation in a-ligned fractures[J].Expanded Abstracts of70thAnnual International SEG Meeting,2000,2373～2375
12Shen F,Toksoz N.Scattering characteristics in heterogene-ous fractured reservoirs from waveform estimation[J].Geo-physical Journal International,2000,140:251～265
13Thomsen L.Elastic anisotropy due to aligned cracks in porous rock[J].Geophysical Prospecting,1995,43:805～829
14Shen F,Sierra J,Toksoz N.Offset-dependent attributes(AVO and FVO)applied to fracture detection[J].Ex-panded Abstracts of69thAnnual International SEG Meet-ing,1999,776～779
15曹均,贺振华,黄德济,等.裂缝储层地震波特征响应的物理模型实验研究[J].勘探地球物理进展,2003,26(2):88～92
16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):350～357
17曲寿利,季玉新,王鑫,等.全方位P波属性裂缝检测方法[J].石油地球物理勘探,2001,36(4):390～397
18李佳阳,夏宁,秦启荣.成像测井评价致密碎屑岩储层的裂缝与含气性[J].测井技术,2007,31(1):17～20
19张景和,孙宗欣.地应力、裂缝测井技术在石油勘探开发中的应用[M].北京:石油工业出版社,2001.35～40
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