三江盆地地震地质条件及采集技术研究
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摘要
位于中国东北境内的三江盆地,环境与气候十分恶劣,勘探程度低,地震地质条件复杂,以往采集的地震资料品质较差。为整体了解盆地结构,进一步评价盆地含油气情况,在分析三江盆地地震地质条件和以往资料存在的问题的基础上,针对多类型的表层结构、强屏蔽界面、低信噪比资料、复杂构造成像等方面的问题,进行了理论论证和地震采集技术研究。发现:①首先须做好低、降速带的调查及激发井深、岩性、药量的试验,以保证药柱在高速层顶面以下激发;②该区进行地震采集时,炮检距不宜过大;③须使地震波有足够的高频成分,以获取散射波。通过研究,解决了地震勘探采集中的难点,提高了地震资料单炮记录的品质,获得了浅、中、深地层成像清晰的地震剖面,取得了明显的地质效果。
With the extremely bad environment and climate, Sanjiang basin is located in the Northeast of China. The quality of former acquisition data was poor due to the complex seismic and geologic condition. In order to obtain an overall understanding on basin structure and appraise the petroleum prospect, after analyzing the seismic geologic condition and the problems in former data, theoretic proof and acquisition technique are studied in terms of multi-aspect surface structure, strong shield in- terface, low signal-to-noise ratio data and complex structure image. After resolving the difficulty in seismic acquisition by research, the quality of single record is enhanced. The seismic section with clear image from the shallow, medium and deep strata has been obtained.
With the extremely bad environment and climate, Sanjiang basin is located in the Northeast of China. The quality of former acquisition data was poor due to the complex seismic and geologic condition. In order to obtain an overall understanding on basin structure and appraise the petroleum prospect, after analyzing the seismic geologic condition and the problems in former data, theoretic proof and acquisition technique are studied in terms of multi-aspect surface structure, strong shield in- terface, low signal-to-noise ratio data and complex structure image. After resolving the difficulty in seismic acquisition by research, the quality of single record is enhanced. The seismic section with clear image from the shallow, medium and deep strata has been obtained.
引文
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8王建花,李庆忠,邱睿．浅层强反射面的能量屏蔽作用[J]．石油地球物理勘探,2003,38(6):589-596,602
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10裴正林,牟永光．火成岩区地震波传播规律研究[J]．石油物探,2004,43(5):433-437
2邹艳荣,蔡玉兰．东北三江盆地演化分析[J]．中国煤田地质,1997,9(1):19-21
3丁秋红,张勤运,高玉华．那丹哈达地区中三叠统一中侏罗统[J]．中国地质科学院沈阳地质矿产研究所集刊,1997,5(6):269-286
4张庆龙,水谷伸治郎,小岛智等．黑龙江省那丹哈达地体构造初探[J]．地质论评,1989,35(1):68-71
5水谷伸治郎,邵济安,张庆龙．那丹哈达地体与东亚大陆边缘中生代构造的关系[J]．地质学报,1989,63(3): 204-216
6马小刚,王东坡,薛林福等．三江盆地绥滨坳陷构造特征及其与油气的关系[J]．长春科技大学学报,2000,30 (1):46-49,60
7陆基孟．地震勘探原理[M]．山东东营:石油大学出版社,1993．1-242
8王建花,李庆忠,邱睿．浅层强反射面的能量屏蔽作用[J]．石油地球物理勘探,2003,38(6):589-596,602
9徐丽萍,杨勤勇．多波多分量地震技术发展与展望[J]．勘探地球物理进展,2002,25(3):47-52
10裴正林,牟永光．火成岩区地震波传播规律研究[J]．石油物探,2004,43(5):433-437
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