【摘要】 江汉盆地牌洲地区海相地层油气勘探存在两个问题:(1)井深设计未考虑激发岩性的影响,导致激发一致性差、能量弱,深层的海相地层资料品质差;(2)深层海相地层资料的信噪比和分辨率低。针对这两个问题,通过试验分析提出采用针对激发岩性进行组合激发和增加检波器串联个数以提高深层反射能量和分辨率;采用高覆盖、长排列以提高资料的信噪比,并获得了较好的应用效果。更多还原

【Abstract】 In exploring oil and gas on marine beds of Paizhou Area in Jianghan Basin,there exist two problems.One is weak shooting consistency,energy and quality of marine bed strata data from deep reservoirs caused by neglecting the influence of shooting rock-type in designing well depth.The other is low signal-to-noise ratio and sharpness of separation of deep marine bed strata data.Aiming at the problems above,by experiments and analysis,the authors propose a method to increase the reflectance and sharpness of separation of deep marine beds by array shooting and geophone cascade adding in shooting rock-type.Also they propose a method to increase the signal-to-noise ratio of data by means of high fold and long pattern.These two methods bring about better effects.更多还原