surface Bumper Jar

The DJ surface bumper jar has been proven to be a safe and effective tool in  releasing stuck tools in drilling operations throughout the years. It is generally  connected at the surface section of the drill string during operations which  require strong downward jarring impacts. The jarring force can be easily  adjusted with the adjustable device located above the rotary disc. The surface  bumper jar is easy to operate and is uniquely designed to support continuous  down jarring.

Generally when the surface jar makes a jarring operation, the strong down

jarring impact on the stuck tool can be clearly seen. Thus, the surface jar

is built to withstand heavy load and strong torque. In addition, it possesses

good sealing performance that can withstand mud circulation with high pump pressure.