- 责任者：Wang Lijun (Zhanjiang Branch of CNOOC Ltd ; Zhanjiang 524057 ; China) ; Li Qiang
- 刊名：Journal of Geology
- 出版年：2012
- 卷期：36(2)
- 关键词：地震波测井 ; seismic logging ; 地震勘探 ; seismic exploration ; 琼东南盆地 ; Qiongdongnan Basin
- 页码：p.142-146
- 图表：illus., 7 refs.
- 分类号：1600
- issnNo：ISSN1674-3636
- isbnNo：CN32-1796/P
Qiongdongnan Basin is an important research object for deep-water exploration in the South China Sea. The Basin was currently less drilled and explorated, but it had a wide exploration prospect. Time-depth conversion had been the focus of research in Qiongdongnan Basin. Velocity, as an important bridge of transforming the results of exploration from time to depth, played a decisive role in the exploration of geological structure and design of drill hole. The average velocity changed largely on the horizon in Qiongdong- nan Basin and there was a large deviation between seismic velocity and well velocity. According to statistical analysis, it was found that there were three types of deviation between seismic velocity and well velocity. Based on their morphological characteristics, they were named as track deviation, bell deviation and scissors deviation. The suitable correction methods of different types of well-seismic deviation were researched in the text, and were applied to the prediction of the time-depth relationship of Well YL1 which was located in Qiongdongnan Basin, and the result was proved accurate through drilling of the well.oft-com:office:office" />