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高陡复杂构造区三维地震精细刻画技术在储气库建设中的应用
Application of 3D seismic fine description technology in the construction of gas storage in high steep and complex structural area
徐敏 巫芙蓉 王兰英 雷开强 王征 司阳涛 唐绪磊 朱亚东
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作者单位:东方西南物探研究院
中文关键字:储气库;偏移速度;断层识别;时深转换;构造轴线
英文关键字:gas storage;migration velocity; recognizing fault; Time depth conversion;structural axes
中文摘要:地下储气库用于随时调节供应量和消费量间的平衡、协调供求关系的变化和战略储备等。川东XGS储气库是西南地区首座大型地下储气库,目前存在构造高陡、断裂系统发育,陡倾角准确入靶困难。利用三维高精度地震处理解释技术,充分结合井位信息优化偏移速度场,提高偏移归位精度,减少与钻井深度误差;通过三维地震精细解释,采用钻井地质恢复技术合理解释构造形态;采用变速成图技术优化时深转换速度模型,使地震预测深度更加接近实钻深度。成果高点轴线更加接近真实位置。该技术实施和应用,为我国其它地区油气库的建设积累了经验,更加有效支撑后期注采井和监测井实施,对XGS储气库的注采井钻探和注采起强有力的技术支撑作用。
英文摘要:Underground gas storage is used to adjust the balance between accommdate and consumption at all time, coordinate the variation of supply and demand and strategic reserve. XGS gas storage in East Sichuan is the first large-scale underground gas storage in Southwest China, XGS gas storage in East Sichuan is the first large-scale underground gas storage in Southwest China. At present, it is difficult for geophysicists to have high and steep structures, developed fault systems and accurate steep dip angles.Using 3D high-precision seismic processing and interpretation technology, fully combining well location information to optimize migration velocity field, improve high migration accuracy, and reduce the error with drilling depth; using 3D seismic fine interpretation, using drilling geological recovery technology to reasonably explain the structure shape; using variable velocity mapping technology to optimize time depth conversion speed model, so that the seismic prediction depth is closer to the actual drilling depth. The axis of structural high point is closer to the real position. The implementation and application of this technology has accumulated experience for the construction of oil and gas reservoirs in other areas of China, more effectively supports the implementation of injection production wells and monitoring wells in the later period, and plays a strong technical support role in the drilling and injection production wells of XGS gas reservoir.
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国内统一连续出版物号:CN51-1159/TE |国内发行代码: |国际标准出版物号:ISSN1673-3177 |国际发行代码:
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