苏北盆地火成岩对地震资料品质的影响及对策

苏北盆地火成岩发育区地震资料品质一直以来不能满足勘探的需要。近年来江苏油田加强了在火成岩发育区的方法设计、野外试验以及处理技术研究。在观测系统设计上，通过对火成岩发育范围的识别，根据模型正演及采集参数分析，针对火成岩的分布范围合理设计采集方案。在野外采集中，通过详细的近地表结构调查、采集试验及严格施工，确保采集质量。在高精度三维实施区块中，火成岩发育区的地震资料品质有较大提高。

rocks in Subei Basin on seismic data quality and its countermeasures

Up to now, quality of seismic data cannot meet requirements of exploration in igneous rock area in Subei Basin. In recent years, method design, field test, and processing technology have been strengthened with implementation of high- precision 3D exploration in Jiangsu Oilfield. On the observation system design, a reasonable acquisition scheme based on distribution features of igneous rocks was designed according to identification of igneous rock growth range, for- ward modeling, and analysis of acquisition parameters. In field acquisition, quality of raw seismic data can be guaranteed by detailed near - surface structure investigation, acquisition test, and strict construction. The seismic data quality of igneous rocks has been improved remarkably in high- precision 3D exploration blocks.