地震沉积学在复杂斜坡带岩性勘探中的应用研究  

Application of seismic sedimentology in lithologic exploration of complex slope zones

作　　者：俞伟哲 Yu Weizhe(Shanghai Branch of CNOOC Ltd.,Shanghai 200335)

机构地区：[1]中海石油(中国)有限公司上海分公司,上海200335

出　　处：《石化技术》2024年第6期242-244,共3页Petrochemical Industry Technology

摘　　要：西湖凹陷西部斜坡带平湖组发育岩性气藏,主力气藏区埋深大、岩性组合复杂,砂泥岩识别难度大。同时,地震资料分辨率不足,导致岩性体厚度吻合度差、边界识别难度大。基于地震沉积学思想,在识别岩性基础上,应用分频技术刻画不同厚度岩性体;在此基础上应用分频地层切片匹配古地貌,刻画岩性体展布范围。通过地震沉积学的研究应用,在研究区有效识别了岩性体发育模式并取得勘探发现。The Pinghu Formation in the western slope zone of the Xihu Depression has developed lithological gas reservoirs,with the main gas reservoir area being deeply buried and complex lithological combinations,making it difficult to identify sand and mudstone.At the same time,the insufficient resolution of seismic data leads to poor consistency in the thickness of lithological bodies and difficulty in identifying boundaries.Based on seismic sedimentology,on the basis of identifying lithology,frequency division technology is applied to characterize lithological bodies with different thicknesses;On this basis,frequency division stratigraphic slices are applied to match ancient landforms and characterize the distribution range of lithological bodies.Through the research and application of seismic sedimentology,the development patterns of lithological bodies have been effectively identified in the study area and exploration discoveries have been made.

关 键 词：西湖凹陷 复杂斜坡 岩性勘探 地震沉积 

分 类 号：P618.13[天文地球—矿床学] P631.4[天文地球—地质学]