摘要
柯东断裂构造带地形以山地为主,地表起伏,表层为巨厚黄土塬,结构复杂,纵、横向速度变化大,严重影响了地震资料的成像,静校正问题在该区尤为重要。在分析该区近地表结构特点和地震资料品质的基础上,对目前处理软件中不同静校正方法的基本原理、适用条件进行了归纳和分析。认为,折射波静校正技术具有较强的适应能力,同时配套使用初至波剩余静校正、反射波剩余静校正和综合全局寻优剩余静校正等技术,总结、探索出了一套适合黄土塬地区资料的综合静校正方法。
Kedong fracture tectonic belt is not only dominantly composed of mountainous regions but also covered by complicated surface. With very huge losse plateau, the surface is featured by complex structure, and large variation of both vertical and lateral velocity, severely affecting seismic-data image. So, static correction is very important for this belt. We summed up the principle and applicable condition of different static correction technologies for current-used processing software after fully analyzing the features of near- surface structures and seismic- data quality. Results show that a technology of refraction- wave static correction possesses a stronger applicability; meanwhile, other three technologies of residual static correction, including first break wave, reflection wave,and combination optimization, may be also used to this area. Finally, a set of synthetic static correction technologies suitable to losse plateau regions was gained.
出处
《天然气技术与经济》
2015年第5期21-23,36,共4页
Natural Gas Technology and Economy
关键词
柯东断裂构造带
静校正
初至波
反射波
综合全局寻优
Kedong fracture tectonic belt,static correction,first break wave,reflection wave,combination optimization
