长波长量约束剩余静校正技术研究与应用  

Research and application of long wavelength constrained residual static correction technology

作　　者：王豆豆 Wang Doudou(Sinopec Geophysical Research Institute Co.,Ltd,Nanjing 211103)

机构地区：[1]中石化石油物探技术研究院有限公司,江苏南京211103

出　　处：《石化技术》2024年第10期92-94,共3页Petrochemical Industry Technology

摘　　要：由于近地表条件的变化,在地震勘探中会带来静校正问题,静校正问题的存在严重影响成像质量还会引起假构造,因此解决静校正问题对地震勘探至关重要。在实际生产中通常采用层析静校正解决中长波长静校正问题,利用地表一致性剩余静校正解决中短波长静校正问题。但常规地表一致性剩余静校正处理技术在信噪比低、不满覆盖区域,会引入不可靠的长波长量,在成像剖面中引起假构造。长波长量约束剩余静校正技术是地表一致性的,能够在求解剩余静校正量时对长波长量进行约束,避免不合理的长波长量剩余静校正量被带入到炮点、检波点的剩余静校正量中,从而改善成像质量,避免出现假构造,在沙漠工区实际资料应用中取得比较好的效果。Due to changes in near surface conditions,static correction problems arise in seismic exploration.The existence of static correction problems seriously affects imaging quality and can also cause structures.Therefore,solving the problem of static correction is crucial for seismic exploration.In practical production,tomographic static correction is usually used to solve the problem of mid to long wavelength static correction,and residual static correction based on surface consistency is used to solve the problem of mid to short wavelength static correction.However,conventional surface consistency residual static correction techniques can introduce unreliable long wavelength quantities in areas with low signal-to-noise ratio and insufficient coverage,causing structures in imaging profiles.The long wavelength constrained residual static correction technique studied in this article is consistent with the surface,which can constrain the long wavelength when solving the residual static correction,avoiding unreasonable long wavelength residual static correction from being carried into the residual static correction of shot points and detection points,thereby improving imaging quality and avoiding structures.It has achieved good results in practical data applications in desert work areas.

关 键 词：地震勘探 地表一致性 长波长量约束 剩余静校正 

分 类 号：P631.4[天文地球—地质矿产勘探]