The least traveltime ray tracing method can greatly reduce the amount of calculation for tomographic inversion and increase the accuracy for ray tracing . the important method to do the cross well seismic reflection image is xsp - cdp algorithm 研究的最小旅行時射線追蹤法可大大減少層析反演的計算工作量并提高射線追蹤的精度;井間地震反射成像主要采用xsp - cdp方法。
In seismic prospecting , static correction is always cared by prospector and not resolved finally , especially for complicated - surface area . static correction influences on the reflection image and can lead to fault seismic interpretation and finally lead to dry - well . so it is very important and necessary for us to research 在地震勘探中,靜校正問題一直受到地震勘探工作者的特別關注,始終是注重解決而未能徹底解決的問題,特別是在復雜地表地區(qū)的地震勘探中;靜校正問題的存在,直接影響地震反射波的成像,致使地震剖面出現(xiàn)假構造,給解釋人員帶來錯誤的認識。
This paper analyses and explains several interferential images arising from autocollimation , and lays more emphasis on the analysis of the convex with identical property to a spherical reflector , introduces the relatios between reflection images and autocollimation images , and expounds how to form to judgment about interferential images 摘要對自準值法測量時出現(xiàn)的幾個干擾像進行分析、解釋,著重分析了凸透鏡也具有球面反射鏡的性質,導出反射像和自準值法成像的關系,及若何判斷干擾像。