Quantitative analysis of source array effectiveness based on wave equation
Wang Ren-fu1, Xu Feng2, Liu Fu-lie2, Xie Jie3
1. Institute of Geology and Geophysical Research, Zhejiang University, Hangzhou, Zhejiang 310027, China;
2. Institute of Resources and Environment, Southwest Petroleum University, Chengdu, Sichuan 610500, China;
3. Zhuangxi Oil Production Plant of Shengli Oilfield, Sinopec, Dongying, Shandong 257237, China
Abstract：Recently there has been much success of seismic source array in complex mountain fronts in Western China.However mechanical characteristics of source array have not been researched extensively with just many source array experiments in the field.In this work,we analyze the energy-distribution of different source array and establish an evaluation function.The function represents ratio of energy which illuminate target layer to total shooting energy by finite-difference wave equation forward modeling.We also discuss the energy distribution of non-time delay source array in detail.With comparisons of shot gathers by different source arrays,we can draw a conclusion that the largest incident energy function value corresponds with the highest signal noise ratio.This may be a new method to evaluate quantitatively the effectiveness of source array and to optimize source arrays.
