| 地震勘探频率中近抛物线型衰减的物理解释 |
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| 引用本文： | 杨宝俊,张伯军,杨友发,余迪钧.地震勘探频率中近抛物线型衰减的物理解释[J].吉林大学学报(地球科学版),1990(3). |
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| 作者姓名： | 杨宝俊 张伯军 杨友发 余迪钧 |
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| 作者单位： | 长春地质学院
(杨宝俊，张伯军，杨友发)，大庆油田(余迪钧) |
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| 摘 要： | 几十年来,人们对地震波在真实介质中传播发生的衰减进行了理论与实践两方面研究。文中综述了前人工作,包括机制与测试工作,同时给以评论,指出对于传播距离与频率之间关系研究不够,并且对实测结果作物理解释较少。作者用VSP技术进行了不同距离上衰减与频率之间关系的研究,提出了反射补偿的具体方法,采用了多项式拟合技术,得到了近抛物线型衰减的结果。然后,利用波前压力与振动的固有频率思想对测试结果进行了讨论,得出一些有益的结论。
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| 关 键 词： | 衰减机制 反射损失补偿 近抛物线型衰减 地震勘探 |
PHYSICAL INTERPRETATION OF SEISMIC WAVE'S ATTENUATION WITH NEAR PARABOLA'S MODEL IN SEISMIC SURVEY FREQUENCY'S RANGE |
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| Yang Baojun Zhang Bojun Yang Youfa Yu Dijun.PHYSICAL INTERPRETATION OF SEISMIC WAVE''''S ATTENUATION WITH NEAR PARABOLA''''S MODEL IN SEISMIC SURVEY FREQUENCY''''S RANGE[J].Journal of Jilin Unviersity:Earth Science Edition,1990(3). |
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| Authors: | Yang Baojun Zhang Bojun Yang Youfa Yu Dijun |
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| Institution: | Yang Baojun Zhang Bojun Yang Youfa Yu Dijun(Changchun University of Earth Science) (Daqin9 OH Field) |
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| Abstract: | Attenuation of seismic wave's propagating through the earth is studied in both theory and practice for tens years. This paper summarized the previous works which contains both attenuation mechanisms and measurements,and pointed out two defects of the works.First,the relation between propagating distance and frequence is studied seldom. Second, it's not sufficient to interprete physically about the field measurements. We have studied the relations between the distance and the frequency by VSP technique.The writers advanced a method of reflection attenuation compensation, used polynomial fitting technigue.and got an attenuation modern of near parabolic kind after computations.Then the results of the measur-ments and computations.were discussed using both front pressure and inherent frequency of vibration,and some interesting results were got. |
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| Keywords: | seismic survey attenuation mechanism reflection attenuation compensation |
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