摘要
Under the background of"the Chinese continental scientific drilling project location and drilling test"in China,the article reviews and summarizes the great achievements and problems of drilling engineering of Russia СГ-3 ultra deep well. Based on the rethinking on the experience and lessons,some issues are discussed,which should be paid attention in future ultra-deep scientific drilling project in China,such as scientific target and engineering management,scientific location selection,well deviation control and new drilling achievements,the related conclusion are presented.