折射波资料在北黄海盆地地震资料解释中的应用
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摘要
北黄海盆地地质构造复杂,在反射地震资料中,部分地区中、深层反射不清,造成地震资料解释的多解性。笔者分析了该区反射波与折射波时距曲线的区别和联系,充分挖掘反射地震资料的潜力,利用其中的折射波资料,分析盆地的折射波特点,计算出基底速度,弥补反射资料速度分析的不足;利用折射波速度,推断地质属性,划分地震层位,提高了北黄海盆地中、深层地震资料解释的精度,使地震资料解释更加合理。
Geological structure is complicated in the north yellow sea basin.In the reflection seismic data obtained from some areas,the deep reflection is unclear,leading to multiple solutions in seismic data interpretation.In this paper,the authors analyzed the difference and connection between travel time curves of the reflection wave and the refraction wave,made the most of the potential of seismic reflection data,used their refraction data,analyzed refractive characteristics of the basin,and calculated the velocity of the basement,to make up the weaknesses of the velocity analysis of the reflection data.The refractive wave velocity was used to infer geological attributes and divide seismic horizons.The results obtained improve the precision of the intermediate and deep horizon seismic data interpretation in the north yellow sea basin,and make the seismic data interpretation more reasonable.
Geological structure is complicated in the north yellow sea basin.In the reflection seismic data obtained from some areas,the deep reflection is unclear,leading to multiple solutions in seismic data interpretation.In this paper,the authors analyzed the difference and connection between travel time curves of the reflection wave and the refraction wave,made the most of the potential of seismic reflection data,used their refraction data,analyzed refractive characteristics of the basin,and calculated the velocity of the basement,to make up the weaknesses of the velocity analysis of the reflection data.The refractive wave velocity was used to infer geological attributes and divide seismic horizons.The results obtained improve the precision of the intermediate and deep horizon seismic data interpretation in the north yellow sea basin,and make the seismic data interpretation more reasonable.
引文
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[2]杨艳秋,戴春山,刘万洙.北黄海盆地基底结构特征[J].海洋地质动态,2003,19(5):25-26.
[3]田振兴,张训华,薛荣俊.北黄海盆地区域地质特征[J].海洋地质动态,2004,20(2):8-10.
[4]王衍棠,罗文造,舒虎.北黄海盆地地震主要采集参数模拟[J].物探与化探,2011,35(1):70-74.
[5]陆基孟.地震勘探原理[M].山东:石油大学出版社,2001,20-40.
[6]许崇宝,孙立新.反射波地震勘探中折射波资料的应用[J].中国煤田地质,2002,14(1):64-66.
[7]符溪,文鹏飞,陈洁,等.北黄海盆地反射地震勘探中折射波资料的应用[J].石油物探,2004,43(4):369-372.
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