APPLICATION OF SONIC LOGGING IN AVERAGE VELOCITY FIELD
XIE Rui-jie;ZHU Guang-sheng QI Jia-fu et al
西南石油大学学报(自然科学版) . 2003, (1): 9 -11 .  DOI: 10.3863/j.issn.1000-2634.2003.01.003