近道约束层析反演静校正技术在塔里木盆地复杂地区的应用

Application of Static Correction of Near-trace Constrained Tomographic Inversion in Complex Area of Tarim Basin

塔里木盆地地表起伏剧烈,近地表速度横向变化较大,静校正问题十分突出。阐述了近道约束层析反演静校正技术的基本原理,给出了该技术在塔里木盆地近地表结构复杂地区的应用结果,对比了层析反演时有、无近道约束条件下的近地表建模精度和静校正效果。应用结果表明,近道约束层析反演静校正技术在解决塔里木盆地复杂地区的静校正问题时具有明显的技术优势。

Static correction problem was serious in Tarim Basin with acute and rugged topography and sharp lateral variations of near surface velocity.The basic principles of static correction technique of near-trace constrained tomography were described.The application result in complex near-surface areas of Tarim Basin was provided.The effect of correction and near surface modeling accuracy by tomography inversion with and without near-trace constrained conditions was contrasted.Study result indicates that the near-trace constrained tomographic inversion static correction technology has a obvious technological advantage for solving the static correction problem in complex areas of Tarim Basin.