复杂地表条件下不同震源的特性分析及运用

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英文篇名：Analysis on characters of different sources in complex surface conditions and application. 中文刊名：石油地球物理勘探 英文刊名：Oil Geophysical Prospecting 作者：马红树 英文作者：Ma Hong-shu1. 1.Department of International Market ; Geophysical Exploration and Development Company ; Shengli Petroleum Administration ; Dongying City ; Shandong Province ; 257100 ; China 中文关键词：炸药震源 ; 可控震源 ; 信号 ; 记录 ; 参数分析 英文关键词：dynamite source ; vibroseis ; signal ; record ; parameter analysis 出版日期：2008-12-31 机构：胜利石油管理局地球物理勘探开发公司国际市场部; 年：2008 期：S2 出版单位：石油地球物理勘探

摘要

本文对同一地区不同地表条件下炸药和可控震源两种震源的激发因素及产生的地震记录进行了分析和比较,指出在山前带或砾石区可选择可控震源激发,而在沙漠区或农田区可选择炸药震源激发;在选择好激发岩性的基础上,力求在高速层顶面以下3～5m激发是获得较好的炸药震源记录的关键,而震动台次、驱动幅度、扫描长度、扫描频率等参数的正确选取同样是获得良好的可控震源记录的保障。炸药震源和可控震源的联合运用是复杂地表条件下获得高品质地震记录的有效途径。
The paper carried out analysis and comparison of shooting factors of two different sources and seismic records produced in different surface conditions, and pointed out that the vibroseis is selected in foreland and gravel zones and dynamite source is selected as shooting source in desert area or farmland; on the basis of well-selected shooting lithology, we should make our effort to shoot in 3-5m under the top of high-velocity layer, which can get better records by dynamite source, and correct selection of parameters of vibroseis such as the number of vibrator, driving amplitude, sweeping length and frequency is also the guarantee that can acquire good records of vibroseis. Joint application of dynamite source and vibroseis is effective way to acquire high-quality seismic data in complex surface conditions.

引文

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