3D3C技术在川西裂缝性储层预测中的应用
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摘要
川西深层须家河组油气成藏地质条件十分复杂,气藏具有超深、超低孔渗、超高压、超致密等特征,为典型的裂缝性气藏,裂缝预测是该气藏地震勘探面临的最大难题。近年来,以宽方位、大偏移、三维三分量(3D3C)地震资料为主,多学科协同,充分利用三维三分量的纵波信息和转换波信息,从地史成因裂缝预测、P波地震属性裂缝预测、P波方位各向异性检测、横波分裂裂缝检测等多方面开展研究工作,较好解决了须家河组超致密储层裂缝预测问题。
For the deep Xujiahe Formation in western Sichuan Basin,its reservoir-forming geological conditions are very complicated.In addition,it is an extra-deep,extra-low porosity and permeability,extra-high pressure,extra tight and a typical fractured gas reservoir.So,fracture prediction becomes the most difficult problem of seismic exploration in this reservoir.Recently,with the wide-azimuth,large-deviation and three-dimensional and three component(3D3C) seismic data as the soul,some researches,which the 3D3C P-wave and converted-wave data was made full use,have been carried out for the reservoir prediction caused by geological history and P-wave seismic attribute and the detection of both P-wave azimuth anisotropy and S-wave splitting fracture by means of multidisciplinary coordination.
For the deep Xujiahe Formation in western Sichuan Basin,its reservoir-forming geological conditions are very complicated.In addition,it is an extra-deep,extra-low porosity and permeability,extra-high pressure,extra tight and a typical fractured gas reservoir.So,fracture prediction becomes the most difficult problem of seismic exploration in this reservoir.Recently,with the wide-azimuth,large-deviation and three-dimensional and three component(3D3C) seismic data as the soul,some researches,which the 3D3C P-wave and converted-wave data was made full use,have been carried out for the reservoir prediction caused by geological history and P-wave seismic attribute and the detection of both P-wave azimuth anisotropy and S-wave splitting fracture by means of multidisciplinary coordination.
引文
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4甘其刚,高志平.宽方位AVA裂缝检测技术应用研究[J].天然气工业,2005 25(5):42-43.
5甘其刚,杨振武,彭大均.振幅随方位角变化裂缝检测技术及其应用[J].石油物探,2004 43(4):373-376.
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9王秀玲,季玉新.垦71地区多分量地震资料解释方法研究进展[J].油气地球物理,2007,5(1):35-38.
2何志国,熊亮,杨凯歌.川西凹陷中段新场构造须二气藏主控因素分析[J].天然气勘探与开发,2006.(29)4.
3张守仁,万天丰,陈建平.川西坳陷孝泉-新场地区须家河组二段-四段构造应力场模拟及裂缝发育带预测[J].石油与天然气地质,2004 25(1):70-74.
4甘其刚,高志平.宽方位AVA裂缝检测技术应用研究[J].天然气工业,2005 25(5):42-43.
5甘其刚,杨振武,彭大均.振幅随方位角变化裂缝检测技术及其应用[J].石油物探,2004 43(4):373-376.
6叶泰然,刘兴艳,郑荣才.基于天然裂缝网络的二维裂缝度预测技术及应用研究[J].石油物探,2004,43(5):446-449.
7杨振武,李显贵,王安志.新场、东泰、合兴场三维地震相干及应用[J].石油地球物理勘探,2000,35(3):339-345.
8张明,甘利灯,李陵高.三分量地震技术在四川广安地区的应用[J].新疆石油地质,2007,28(4):504-506.
9王秀玲,季玉新.垦71地区多分量地震资料解释方法研究进展[J].油气地球物理,2007,5(1):35-38.
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