【摘要】 伊犁盆地北部山前构造带地表地质条件复杂,激发和接收条件差,造成干扰波发育,原始地震资料信噪比低,难以见到有效反射,偏移成像难度大,导致了地层分布不清,构造难以准确落实,制约了油气勘探的进程。为此,开展了地震勘探宽线组合采集技术攻关,主要包括组合检波器参数设计、组合基距的设计、覆盖次数设计、宽线组合观测系统设计等,形成了一套适合伊犁盆地北部山前构造带地震采集技术,提高了北部山前构造带地震资料的信噪比,准确落实了地层构造,取得了较好的应用效果。更多还原

【Abstract】 In the northern piedmont structure of the Yili Basin,the near-surface condition and the geology structure were complicated,the excitation and receiving conditions were very poor,thus the interference wave there was well developed,the signal-to-noise ratio of the original seismic data was very low,it was difficult to see the effective reflection,it was hard for migration imaging,the unclear distribution of strata was induced,the structure was difficult to be accurately identified,and the process of oil and gas exploration was restricted.Therefore the technology of wide-line combination of seismic exploration acquisition was researched,mainly including the parameter design of combination geophone,the design of array length,the design of coverage number and the design of wide line observation system.By using of these techniques in practice a set of suitable seismic acquisition technologies are established in the northern Piedmont structure of Yili Basin,the signal-to-noise ratio of seismic data is improved,and better application result is achieved.更多还原