| 摘要 |
A downhole vibration tool for connection with a pipe string, including a housing, an unbalanced turbine assembly contained within the housing, an inlet for introducing a fluid into the unbalanced turbine assembly, and an outlet for discharging the fluid from the unbalanced turbine assembly. The unbalanced turbine assembly includes a sleeve and at least one annular turbine which is located in an annular bore defined between the housing and the sleeve. |
