松辽盆地长岭地区中基性火山岩勘探地球物理技术进展

Progress in geophysical techniques for exploration of medium basic volcanic rocks in the Changling area of Songliao Basin

火山岩勘探面临火山喷发多期多源、岩性复杂、横向变化快、非均质性强、有效储层分布规律不明确等问题。以深层中基性火山岩为目标,总结从地震采集、地震处理、火山岩储层预测等地球物理技术的研究进展,介绍松辽盆地长岭地区在中基性火山岩勘探中的相关地球物理特色技术,包括宽方位观测系统设计、针对火山岩的去噪处理、叠前规则化改善空间采样技术、纹理属性识别火山机构、火山岩烃类检测和叠前同时反演预测火山岩有效储层等。探讨多种地球物理技术在松辽盆地长岭地区中基性火山岩勘探实践中的应用,为火山岩体识别、地质储层圈闭刻画及含油气性预测等提供了科学依据和实用手段。

Volcanic rock exploration faces problems such as multiple periods and sources of eruptions,complex lithology,rapid lateral changes,strong heterogeneity,and unclear distribution patterns of effective reservoirs.It is aimed to systematically sum-marize the research progress in geophysical techniques such as seismic acquisition,seismic processing,and volcanic reservoir prediction,targeting deep intermediate basic volcanic rocks.It introduces the relevant geophysical characteristic technologies in the exploration of intermediate basic volcanic rocks in the Changling area of Songliao Basin,including the design of a wide-angle observation system,denoising for volcanic rocks,prestack regularization to improve spatial sampling technology,texture attribute recognition of volcanic mechanisms Detection of volcanic rock hydrocarbons and simultaneous pre stack inversion to predict effective reservoirs of volcanic rocks.This article explores the application of various geophysical techniques in the exploration practice of basic volcanic rocks in the Changling area of Songliao Basin provides scientific basis and practical means for identi-fying volcanic rocks,delineating geological reservoirs,and predicting oil and gas potential.