中国南方海相地层下组合地震采集方法研究

中国南方海相地层“下组合”油气勘探领域广泛，但地震地质条件异常复杂。通过近几年的勘探实践，形成了一套实用的野外地震资料采集技术——基于饱和激发概念的激发方法、多检波器组合接收技术、小道距高覆盖次数变观观测技术、浅层反射法与微测井相结合的表层结构调查方法、盒子波调查干扰波技术、针对目标的观测系统设计技术、试验方法与试验资料量化分析技术和复杂山地测量技术、SPS实时监控技术、适应不同地表的钻井成井技术、闷井方法、精细表层结构调查方法、综合静校正技术等。应用这些方法技术，在黔中-川东南三叠系-震旦系碳酸盐岩裸露区获得了可用于构造解释的高品质地震剖面；改善了米苍-大巴山中央造山带推覆构造南沿的地震资料品质，发现和落实了一批构造和岩性圈闭；在江南隆起前震旦系变质岩出露区得到了高品质的地震剖面；提高了中下扬子平原水网地区地震资料的品质。

Research on seismic acquisition methods for lower assemblage of marine strata in south China.

Petroleum exploration is a broad domain in lower assemblage of marine strata in south China. A series of acquisition techniques have been developed through recent years' exploring practice, such as flexible geometry with small trace interval and high coverage, investigation of surface structure combining shallow reflection technique with microlog, box-wave technique in interference wave investigation, technique of geometry designing focusing on target, study on testing method and quantitative analysis of testing data, surveying technique in complex mountain area, SPS real-time monitoring system,etc. The available seismic sections with high quality for structure interpretation have been obtained in the exposed area of Triassic-Sinian carbonate from the middle of Guizhou to southeast Sichuan. The quality of seismic data acquired from the south side of nappe structure in Micang-Daba mountain central orogenic belt is well improved. Several structural and lithologic traps have been confirmed. Seismic sections with high quality are obtained in pre-Sinian outcrop of metamorphic rocks in Jiangnan uplift, the quality of seismic data has been improved in plain waterway net area of the middle-lower Yangtze region.