尚店北地区火成岩地震勘探方法

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摘要尚店北地区广泛发育多套火成岩,寻找火成岩油气藏是当今-个新的勘探领域。但由于火成岩的地震波阻抗与围岩的差异较大,使得它对地震波的能量下传有很强的屏蔽和吸收作用,造成以往火成岩层间和下伏地层的资料为弱反射或空白,严重制约了对火成岩油气藏的认识。为了查清火成岩内幕发育情况,此次尚店北三维采集在观测系统设计、激发、接收等环节上,采取了诸多有针对性的措施,并取得了明显的效果。

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关键词 ：地震勘探, 火成岩, 观测系统, 屏蔽, 吸收, 激发, 接收

Abstract：Multiple sets of igneous rock are developed in Shangdianbei area and looking for igneous-rock reservoir is a new exploration region currently. But large difference of seismic impedance between igneous rock and its surroundings resulted in strong shield and absorption of down-transmitting seismic energy, made the data of interbed of igneous rock and underlying strata be weak reflection or blank, seriously restricting the knowledge of igneous-rock reservoir. In order to identify the developing scenario of interior of igneous rock, the purposeful measures were adopted in the links of geometry design, shooting and receiving etc in this 3D acquisition operation of Shangdianbei area, achieving better results.

Key words： seismic exploration igneous rock geometry shield absorption shooting receiving

收稿日期: 2008-02-26

P631.4

引用本文:

邱燕, 赵国勇, 田根海, 高建, 张怀榜. 尚店北地区火成岩地震勘探方法[J]. 石油地球物理勘探, 2008, 43(增刊2): 59-62. Qiu Yan, Zhao Guo-yong, Tian Gen-hai, Gao Jian, Zhang Huai-bang. Method of seismic exploration for igneous rock in Shangdianbei area. OGP, 2008, 43(增刊2): 59-62.

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http://www.ogp-cn.com/CN/ 或 http://www.ogp-cn.com/CN/Y2008/V43/I增刊2/59