地震资料处理中自动增益控制方法对振幅的影响
|
摘要
自动增益控制方法(AGC)是地震资料处理中常用的一个模块。通过构建模型和两套处理流程,对炮集、CDP道集和叠后数据使用该模块后可能给振幅带来的影响进行了分析,进而讨论了该模块对AVO属性分析、岩性和流体识别等振幅解释技术产生的影响。研究认为,AGC方法对岩性异常处的振幅变化会带来严重失真,最终将导致解释错误。因此,在以振幅解释为目的的处理流程中,叠前和叠后禁止使用AGC方法。
Automatic gain control(AGC) is a modulus commonly used in seismic data processing.The paper,through building model and two processing flowcharts,analyzed shot gather,CDP gather and the influence of the use of the modulus after data stacking on amplitude,then discussed the influence of the modulus on amplitude interpretation technology such as AVO attribute analysis,identification of lithology and fluid.In the study,it was considered that AGC would bring sever falsification of the amplitude at lithologic anormaly,inducing misinterpretation.In the processing flowchart with amplitude interpretation as objective,it is forbidden to utilize AGC before and after stacking.
Automatic gain control(AGC) is a modulus commonly used in seismic data processing.The paper,through building model and two processing flowcharts,analyzed shot gather,CDP gather and the influence of the use of the modulus after data stacking on amplitude,then discussed the influence of the modulus on amplitude interpretation technology such as AVO attribute analysis,identification of lithology and fluid.In the study,it was considered that AGC would bring sever falsification of the amplitude at lithologic anormaly,inducing misinterpretation.In the processing flowchart with amplitude interpretation as objective,it is forbidden to utilize AGC before and after stacking.
引文
[1]GREAVES R J.Coal prospect evaluation using high-resolution reflection seismology:a case study[J].The Leading Edge,1984,3(10):44-47.
[2]李红梅,石林光,杨玉龙.叠前地震属性处理及综合解释技术[J].石油物探,2004,43(增刊):45-47.
[3]张宪旭,马劲风,程建远.深部煤层的AVO属性分析[J].煤炭学报,2009,34(9):1180-1183.
[4]郭树详.地震资料保幅处理的讨论[J].油气地球物理,2009,7(1):1-7.
[5]周能丰,李青.振幅补偿与保幅处理探讨[J].小型油气藏,2005,10(7):23-25.
[6]王正和,崔永福,向东.井控处理中的真振幅恢复与Q补偿方法及应用[J].物探与化探,2008,32(4):434-437.
[7]张宝金,成谷,王云专,等.去噪强度、去噪效率与振幅保真[J].石油地球物理勘探,2002,37(1):1-5.
[8]HILTERMAN F J.Seismic amplitude interpretation,Seismic Amplitude Interpretation[M].2001Distinguished Instructor Se-ries No.4.[S.I.]:Soc.of Expl.Geophsys,2001.
[9]王西文,赵帮六.地震资料相对保真处理方法研究[J].石油物探,2009,48(4):320-331.
[10]王雪秋,孙建国.地震勘探中的数据保真问题综述[J].海相油气地质,2002,7(1):55-58.
[11]PENG S,CHEN H,YANG R,et al.Factors facilitating or limit-ing the use of AVO for coal-bed methane[J].Geophysics,2006,71(4):49-56.
[12]LAWRENCE M G.Advances in seismic reflection profiling for US coal exploration[J].The Leading Edge,1991,10(12):24-29.
[13]FORREST M.Bright ideas still needed persistence[J].AAPG Explorer,2000,21(5):20-21.
[2]李红梅,石林光,杨玉龙.叠前地震属性处理及综合解释技术[J].石油物探,2004,43(增刊):45-47.
[3]张宪旭,马劲风,程建远.深部煤层的AVO属性分析[J].煤炭学报,2009,34(9):1180-1183.
[4]郭树详.地震资料保幅处理的讨论[J].油气地球物理,2009,7(1):1-7.
[5]周能丰,李青.振幅补偿与保幅处理探讨[J].小型油气藏,2005,10(7):23-25.
[6]王正和,崔永福,向东.井控处理中的真振幅恢复与Q补偿方法及应用[J].物探与化探,2008,32(4):434-437.
[7]张宝金,成谷,王云专,等.去噪强度、去噪效率与振幅保真[J].石油地球物理勘探,2002,37(1):1-5.
[8]HILTERMAN F J.Seismic amplitude interpretation,Seismic Amplitude Interpretation[M].2001Distinguished Instructor Se-ries No.4.[S.I.]:Soc.of Expl.Geophsys,2001.
[9]王西文,赵帮六.地震资料相对保真处理方法研究[J].石油物探,2009,48(4):320-331.
[10]王雪秋,孙建国.地震勘探中的数据保真问题综述[J].海相油气地质,2002,7(1):55-58.
[11]PENG S,CHEN H,YANG R,et al.Factors facilitating or limit-ing the use of AVO for coal-bed methane[J].Geophysics,2006,71(4):49-56.
[12]LAWRENCE M G.Advances in seismic reflection profiling for US coal exploration[J].The Leading Edge,1991,10(12):24-29.
[13]FORREST M.Bright ideas still needed persistence[J].AAPG Explorer,2000,21(5):20-21.
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心