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

作　　者：卢占武[1] 李文辉[1] 陈明春 叶天生 李井元 李洪强[4] LU Zhanwu;LI Wenhui;CHEN Mingchun;YE Tiansheng;LI Jingyuan;LI Hongqiang(SinoProbe Laboratory of Ministry of Natural Resources,Institute of Geology,Chinese Academy of Geological Sciences,Beijing 100037,China;School of Geophysics,Chengdu University of Technology,Chengdu 610059,Sichuan,China;Sinopec Geophysical Corporation Nanfang Branch,Chengdu 610200,Sichuan,China;Chinese Academy of Geological Sciences,Beijing 100037,China)

机构地区：[1]自然资源部深地科学与探测技术实验室,中国地质科学院地质研究所,北京100037 [2]成都理工大学地球物理学院,四川成都610059 [3]中石化石油工程地球物理有限公司南方分公司,四川成都610200 [4]中国地质科学院,北京100037

出　　处：《矿产勘查》2024年第5期803-810,共8页Mineral Exploration

基　　金：国家自然科学基金项目(42274135);第二次青藏高原综合科学考察研究专项(2019QZKK0701)联合资助。

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。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,acquisi-tion parameters,processing and interpretation techniques,which has played a key role in the strategic investiga-tion 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,overly-ing 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 qual-ity 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.

关 键 词：羌塘盆地 内部结构 反射地震勘探 技术建议 

分 类 号：TE132[石油与天然气工程—油气勘探]