THEDESIGNMETHODSFORSEISMICGEOMETRY INTHEPIEDMONTBELTOFWESTERNCHINA
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摘要: 山前复杂构造带是西部新区油气勘探的主攻领域之一,西部山前带由于其特殊的表层地震地质条件和深层复杂地质结构,造成静校正问题突出、地震波场复杂、地震资料信噪比低。针对这些难点提出了西部山前带观测系统设计方法,即基于真实地表的综合模型和叠前成像效果、结合CRP分析技术的观测系统设计技术,利用该技术在哈山西三维区块进行了观测系统优化设计,获得了较好的资料效果。Abstract: ThecomplicatedpiedmontbeltisthemainfieldforoilandgasexplorationinnewexplorationregionsofWestChina.The particularsurfacegeologicalconditionsandcomplicateddeepgeologicalstructuresoftheseregionscauseoutstandingproblemssuchas staticcorrection,complexseismicwavefieldandlowSNRseismicdata.Aimedatsolvingthesedifficulties,thispaperputsforwardthe designofseismicgeometryinwesternpiedmontbelt,whichisbasedonthecomprehensiverealsurfacemodelwithpre-stackimaging effectincombinationwiththedesigntechnologyfortheobservationsystemofCRPanalysistechnology.Thistechnologywasusedin Hashan3Dblockforoptimizationdesignoftheobservationsystem,withfairlygoodresultsobtained.
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Key words:
- piedmontbelt /
- designofseismicgeometry /
- prestackmigration /
- illuminationofseismicwaves
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