聚能炸药在杭锦旗地震采集中的应用
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摘要
鄂北杭锦旗地区上古生界蕴含丰富的天然气资源,气藏类型以构造-岩性气藏为主,目前主要的勘探手段为地震岩性勘探,要求地震资料必须具有很好的一致性;但复杂的表层结构使得地震资料品质在不同激发条件下呈现出较大的差异性,给后续岩性处理、解释工作带来困难。为了解决这一问题,以改善激发效果为目的,从增加向下的激发能量入手,将聚能炸药引入杭锦旗地震激发,利用其定向爆轰特性,有效提高了丘陵沙漠区的地震资料品质,改善了杭锦旗地区地震资料的一致性,促进了杭锦旗地区的岩性勘探工作。
The upper Paleozoic of Erdos basin north Hangjinqi area contains rich natural gas resources. The main reservoir types are structural lithologic gas reservoir. At present the main exploration means is the seismic lithological exploration. It requires the seismic data must have good consistency. But the complicated surface structure makes that the quality of seismic data showed a great difference in different excitation conditions. This situation caused difficulties to follow-up lithologic processing and interpretation. In order to solve this problem and to improve excitation effect,shaped charge explosives is used to excitation of Hangjinqi area. It can increase the the downward excitation energy using directional detonation characteristics of shaped charge explosives. This method improved the quality of seismic data in desert area effectively,improved the consistency of seismic data in Hangjinqi area,and facilitated the lithological exploration work in Hangjinqi area.
引文
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