VSP和声波测井资料在岩性解释中的联合应用

Joint application of VSP and sonic logging data in lithologic interpretation

中国石化石油勘探开发研究院南京石油物探研究所 江苏南京210014

Institute of Geophysical Prospecting,Research Institute of Petroleum Exploration and Development of SINOPEC, Nanjing 210014,China

地层速度变化与地层岩性变化密切相关,在对VSP测井、声波测井的速度进行精度分析后,阐明了在进行岩性解释时,2种速度单一的使用是不完整、不合理的,声波使用前需进行校正。应用实例表明,多井地区 2种测井资料的交互速度分析,得到了区内储层的速度—岩性的变化特征,是一种实用有效的方法,可以提高岩性解释的精度.

Variations of formation velocity are closely related to the changes of formation lithology. Precision a nalysis of velocities from VSP and sonic logging data shows that the using of these two kinds of velocities individually in lithologic interpretation is insufficient and unreasonable. Before being used, the sonic wave data must be corrected. Practice has proven that interactive velocity analysis of these logging data is an effective method in areas with several wells, yielding an accurate distribution of velocity lithological variation. Therefore, the precision of lithologic interpretation can be improved