叠前深度偏移技术在奎屯南构造成像中的应用
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摘要
奎屯南背斜位于准噶尔盆地南缘第三排构造带。由于山前带地质条件复杂,地层速度横向变化大,常规处理地震资料难以可靠落实该构造。叠前深度偏移处理能够克服常规处理技术的缺陷,是落实复杂地质构造的重要手段。利用叠前深度偏移技术,可靠落实了奎屯南背斜构造,钻探结果表明效果显著。通过本次处理与研究,获得叠前深度偏移处理技术的有效性、处理解释一体化的必要性及引起准噶尔盆地南缘速度异常、地震勘探难度大的几个因素等结论。
Kuitun-nan anticline lies in the third row structural zone in the southern margin of Junggar basin.It is difficult to credibly prove the structure by the general processing seismic data due to the complex geologic condition and the large difference of transverse stratum velocity in the piedmont.Prestack depth migration is an important technique to prove the structure because it has overcome limitations of general processing.By using prestack depth migration,the structure of Kuitun-nan anticline has been proved effectively because the drilling has shown a good effect.As a result of this work,the validity of prestack depth migration,the need of incorporate processing and explaining along with some factors that caused exceptional velocity and difficult seismic exploration in the southern margin of Junggar basin are educed.
Kuitun-nan anticline lies in the third row structural zone in the southern margin of Junggar basin.It is difficult to credibly prove the structure by the general processing seismic data due to the complex geologic condition and the large difference of transverse stratum velocity in the piedmont.Prestack depth migration is an important technique to prove the structure because it has overcome limitations of general processing.By using prestack depth migration,the structure of Kuitun-nan anticline has been proved effectively because the drilling has shown a good effect.As a result of this work,the validity of prestack depth migration,the need of incorporate processing and explaining along with some factors that caused exceptional velocity and difficult seismic exploration in the southern margin of Junggar basin are educed.
引文
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[10]方伍宝,周腾,赵改善.叠前深度偏移技术在某地区的应用[J].石油物探,1999,38(1):1-8.
[11]范旭.准噶尔盆地南缘复杂山地地震资料处理技术和效果[J].石油物探,2002,38(增刊):314-318.
[2]沈财余,冷传波,杨长春.地震资料叠前深度偏移在CD地区的应用[J].石油地球物理勘探,1997,32(4):463-471.
[3]董臣强,谭明友,张明振,等.Kirchhoff积分法叠前深度偏移技术在孤岛地区的应用[J].石油地球物理勘探,2002,37(2):180-184.
[4]赵改善.叠前深度偏移成像技术[J].石油物探译丛,1998,21(4):1-9.
[5]孙自明,何治亮,牟泽辉.准噶尔盆地南缘构造特征及有利勘探方向[J].石油与天然气地质,2004,25(2):216-221.
[6]R J Vcrstceg.叠前深度偏移对速度模型的灵敏性[J].石油物探译丛,1994,17(1):27-35.
[7]方伍宝,周腾,袁联生,等.叠前深度偏移在复杂地区的应用[J].石油物探,2003,42(1):69-71.
[8]王有新,史政军,李少英.深度偏移的发展与应用概况[J].石油地球物理勘探,1994,29(4):527-531.
[9]杨勤勇,徐丽萍.地震勘探技术新进展[J].勘探地球物理进展,2002,25(1):5-10.
[10]方伍宝,周腾,赵改善.叠前深度偏移技术在某地区的应用[J].石油物探,1999,38(1):1-8.
[11]范旭.准噶尔盆地南缘复杂山地地震资料处理技术和效果[J].石油物探,2002,38(增刊):314-318.
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