论文部分内容阅读
序言地震勘探方法已经沿用了五十多年,它在寻找油气田方面有着良好的效果。但是,为了适应钻井困难地区以及表层激发条件较差地区的需要,从五十年代开始逐渐发展了重锤、气爆、气枪等非炸药震源,这些地面震源都是脉冲式的,即重锤每落下一次或者气体爆炸一次,均产生一个短脉冲,向地下传播。这种类型的脉冲震源,其能量是无法与爆炸震源相比的。所以,传播深度较浅,未能解决深部油气藏的勘探问题,故使用不是很广泛的。五十年代初期,人们根据雷达和火炮控制系统的原理,制造出一种新型的震源系统,称为可控震源系统,也称连续振动系统。这种震源和脉冲震源不一样,它产生的是
Foreword Seismic exploration methods have been in use for more than fifty years and have had good results in the search for oil and gas fields. However, in order to meet the needs of difficult drilling areas and areas with poor excitation conditions, non-explosive sources such as heavy hammer, gas explosion and air gun have been gradually developed since the 1950s. These ground sources are pulsed, that is, Once dropped or once the gas explosion, have a short pulse, spread to the ground. This type of pulsed source can not be compared to an explosive source. Therefore, the shallow depth of transmission can not solve the exploration problem of deep reservoirs, so the use is not very extensive. In the early 1950s, people created a new source system called a vibroseis system, also known as a continuous vibration system, based on the principles of radar and artillery control systems. This source is different from the pulse source, what it produces is