卢占武,李文辉,陈明春,叶天生,李井元,李洪强.羌塘盆地内部结构与反射地震勘探技术分析[J].矿产勘查,2024,15(5):803-810 |
羌塘盆地内部结构与反射地震勘探技术分析 |
Internal structure and technology analysis of reflection seismic exploration in the Qiangtang basin |
投稿时间:2024-03-17 修订日期:2024-04-02 |
DOI:10.20008/j.kckc.202405011 |
中文关键词: 羌塘盆地 内部结构 反射地震勘探 技术建议 |
英文关键词: the Qiangtang basin internal structure reflection seismic exploration technology suggestion |
基金项目:本文受国家自然科学基金项目(42274135) 和第二次青藏高原综合科学考察研究专项(2019QZKK0701)联合资助。 |
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中文摘要: |
位于青藏高原腹地的羌塘盆地海相地层保存较为完整,是中国最大的中生代海相含油气盆地。羌塘盆地的油气地震勘探经历了近30年的历程,在仪器设备、采集技术、数据处理和解释等方面均取得了长足进步,对羌塘盆地油气资源战略调查起到了关键作用。本文总结了羌塘盆地反射地震勘探的历程和数据采集参数,根据笔者团队多年积累的资料,揭示出羌塘盆地基底及上覆地层的结构,分析了有利圈闭构造及其对油气的影响,并根据实际情况,进一步分析了影响羌塘盆地油气地震勘探数据质量的主要因素。建议从改善激发、接收条件,优化观测系统,开展针对性处理等多个方面综合考虑,提高反射地震资料品质,获得高质量的地震剖面。 |
英文摘要: |
The Qiangtang basin is a well preserved marine stratigraphic basin in the Qinghai-Tibet Plateau, and is also the largest Mesozoic marine oil-bearing basin in China. The seismic exploration of oil and gas in the Qiangtang basin has g experienced nearly 30 years, and has made great progress in instrument equipment, acquisition parameters, processing and interpretation techniques, which has played a key role in the strategic investigation of oil and gas resources in the Qiangtang basin. This paper summarizes the history and data acquisition parameters of reflection seismic exploration in Qiangtang basin, and expounds the basement characteristics, overlying strata structure, trap structure and its influence on oil and gas in Qiangtang basin according to the data accumulated by the project team for many years. According to the actual situation, the main factors restricting the quality of oil and gas seismic exploration data in Qiangtang basin are further analyzed. It is suggested that the quality of reflected seismic data should be improved and high-quality imaging profiles can be obtained by improving excitation and reception conditions, optimizing observation system and carrying out targeted processing. |
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