三维地震勘探技术在多组系复杂构造区的应用
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摘要
勘探区位于川东高陡复杂地区,工区地表、地震地质条件复杂,地质构造受多期次多组系应力作用,虽经过了多次二维地震勘探,但仍然难以搞清各构造之间的相互接触关系及区内断层的断点位置和组合关系。在该地区进行的三维地震勘探施工中,通过优化野外采集施工方式、室内地震资料处理技术措施、三维可视化技术精细地震资料对比解释技术,提高了地震分辨率,查清了各构造特征及相互间的接触关系,从三维立体角度对断层进行了精细的刻画,获得了准确可靠的成果,由此发现了一个大的潜伏高部位带,为老油田进一步挖潜提供了丰富可靠的资料。这证明三维地震勘探是查清多组系复杂构造区各构造相互接触关系的最有效勘探手段。
Prospecting area is located in a high-steep complex area in east Sichuan.Surface and seismic geological condition are complex in work area.Because the geological structure was subjected to the stress action of multi-stage multi-formation systems,it is difficult to beat out the interrelationship among structures and breakpoint location and combination relation of fault although 2D seismic prospecting has been performed in this area for many times.The seismic resolution is improved and the various structural characteristics and their interrelationship are made sure through selecting the field acquisition operation mode,optimizing the seismic data processing technology and using the 3D visualization technology to conduct the comparison and interpretation of seismic data.The fault is finely described from a 3D angle to obtain an accurate and reliable result.In particular,a large concealment high zone is found to provide the rich and reliable information for further potential tapping,which proves that the method is the most accurate prospecting method to make sure the interrelationship among various structures in complex structure areas with multi-formation system.
Prospecting area is located in a high-steep complex area in east Sichuan.Surface and seismic geological condition are complex in work area.Because the geological structure was subjected to the stress action of multi-stage multi-formation systems,it is difficult to beat out the interrelationship among structures and breakpoint location and combination relation of fault although 2D seismic prospecting has been performed in this area for many times.The seismic resolution is improved and the various structural characteristics and their interrelationship are made sure through selecting the field acquisition operation mode,optimizing the seismic data processing technology and using the 3D visualization technology to conduct the comparison and interpretation of seismic data.The fault is finely described from a 3D angle to obtain an accurate and reliable result.In particular,a large concealment high zone is found to provide the rich and reliable information for further potential tapping,which proves that the method is the most accurate prospecting method to make sure the interrelationship among various structures in complex structure areas with multi-formation system.
引文
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[2]Sherif R E,Geldart L P.勘探地震学[M].初英,译.北京:石油工业出版社,1999:220-221.Sherif R E,Geldart L P.Prospecting seismology[M].Chu Ying,Translated.Beijing:Petroleum Industry Press,1999:220-221.
[3]余功铭,张永华,梁运基,等.复杂断裂构造带三维地震勘探技术及效果[J].新疆石油地质,2007,28(1):101-103,111.Yu Gongming,Zhang Yonghua,Liang Yunji,et al.Three dimensionalseismic prospecting technology and effect of complex fault belt[J].Xinjiang Petroleum Geology,2007,28(1):101-103,111.
[4]马在田.三维地震勘探方法[M].北京:石油工业出版社,1989:57-68.Ma Zaitian.Three dimensional seismic prospecting method[M].Beijing:Petroleum Industry Press,1989:57-58.
[5]刘伊可,常旭,王辉.三维复杂地形近地表速度估算及地震层析静校正[J].地球物理学报,2001,44(2):272-278.Liu Yike,Chang Xu,Wang Hui.Estimation of three dimensionalcomplex terrain near-surface velocity and seismic tomographic staticcorrections[J].Chinese Journal of Geophysics,2001,44(2):272-278.
[6]黄超.全三维地震解释方法在王14断块区构造研究中的应用[D].北京:中国石油大学,2006.Huang Chao.Application of full three dimensional seismicinterpretation to Wang14 Fault Block structure research[D].Beijing:China University of Petroleum,2006.
[7]赵雨晴,张永华,李琛,等.复杂断块圈闭识别与应用研究[J].断块油气田,2005,12(6):18-20.Zhao Yuqing,Zhang Yonghua,Li Chen,et al.Identification andapplication research of complex fault-block trap[J].Fault-Block Oil&Gas Field,2005,12(6):18-20.
[8]吴永平,王超.三维相干技术在三维精细构造解释中的应用[J].断块油气田,2008,15(2):27-29.Wu Yongping,Wang Chao.Application of 3D coherence cubetechnique in 3D seismic fine structural interpretation[J].Fault-BlockOil&Gas Field,2008,15(2):27-29.
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