论文部分内容阅读
海洋上首次采用地震法勘探石油和天然气的时候,炸药和各种有关的化学爆炸物是主要的地震能源。地震勘探法从陆地转向海洋环境的过程是不平坦的,人们早就已经注意到[1]初始爆炸以后伴有二次脉冲,它使整个地震记录发生混乱,以致无法介读。引起这些有害效应的机理是一个基本的机理,它直到今天仍然是一个主要的研究课题。初始爆炸所形成的气泡迅速膨胀,将水急速排出,这样形成的总动量使膨胀超越流体静力学的平衡点。到达某一点的时候,气泡所排出的水的动量变为零,气泡就开始受到压缩。
For the first time in the oceans, seismic methods for the exploration of oil and gas were used. Explosives and various related chemical explosives were the main sources of seismic energy. The process of seismic exploration from land to marine environment is uneven. It has long been observed [1] that secondary shocks accompany the initial explosion, which confound the entire seismic record and make it unreadable. The mechanism that causes these detrimental effects is a fundamental mechanism that until today remains a major research topic. The bubbles formed by the initial explosion swelled rapidly, draining the water rapidly, so that the total momentum thus formed expanded beyond the equilibrium point of the hydrostatics. When it reaches a certain point, the momentum of the water exiting the bubble becomes zero and the bubble begins to compress.