Abstract: The research of technology of plug removal injection increase with eccentricity separate layer water injection hydraulic sound wave was developed according to the state and the problem of old Oilfield development. The technology principle and characteristic, the main technique parameters, and the field test were introduced. The structure and working law of the main matching tool PXSB-115-25/120 was narrated. Field application showed that this technology had some advantages such as simpleness technique, little investment, longer efficiency period.