石油地球物理勘探2025，Vol.60Issue(3)：689-699,11.DOI:10.13810/j.cnki.issn.1000-7210.20240093
"四定法"多次波识别体系的建立与应用
Establishment and application of multiple wave recognition system based on"four determination"method
摘要
Abstract
In the middle and deep oil and gas exploration in the Junggar Basin,the imaging quality of seismic data is seriously affected by multiple waves caused by strong impedance interface.Because of the small diffe-rence between multiple waves and primary waves and the unclear periodic characteristics of multiple waves due to multi-source superposition,it is difficult to distinguish between primary waves and multiple waves during data processing.Thus,accurate recognition of multiple waves is a prerequisite for multiple wave suppression.In this paper,the reflection coefficient,vertical seismic profile(VSP)calibration,and forward modeling results are first analyzed to determine the source of multiple waves.Then,the plane zone of multiple wave development is de-termined by making clear the characteristics of source plane distribution through well-seismic combination.Fur-thermore,the longitudinal segments affected by multiple waves are determined by precise calibration using syn-thetic recording,VSP,and other methods.At last,the differences in frequency and energy between multiple waves and primary waves are identified using data volumes of different frequency bands,and the seismic re-sponse characteristics of multiple waves are determined.On this basis,a multiple wave recognition system based on the"four determination"method is established.The practical application results in Fuzhong and Mahu areas of the Junggar Basin show that the formation structure and occurrence of the new data have high coin-cidence rates with well drilling,and the relationship between sand pinchout and overlaying is clear.The multi-wave recognition system can effectively identify the development characteristics of different multiple waves,pro-viding an important basis for multiple wave suppression and greatly improving data fidelity.关键词
多次波/正演模拟/平面区带/地震响应/资料保真度Key words
multiple waves/forward modeling/plane zone/seismic response/data fidelity分类
天文与地球科学引用本文复制引用
林煜,苗金鹏,刘啸虎,刘超威,朱峰,康晓宁.."四定法"多次波识别体系的建立与应用[J].石油地球物理勘探,2025,60(3):689-699,11.基金项目
本项研究受中国石油集团油气和新能源分公司项目"风险勘探领域和目标研究、工程技术攻关及现场试验―新区新领域综合研究"(2023YQX10111)资助. （2023YQX10111）
