Wireline Hydraulic Jar
Hydraulic Jars are used for jarring when difficulty is face to obtain good jarring action with Mechanical Jars, particularly due to deviated wells or wells with highly viscous fluids. These jars provide only up stroke and are run between stem and Mechanical Jar. The hydraulic jar is applicable to the wireline operation at the deeper underground position, work based on the principle of liquid damp and gap throttle delay, so as to obtain the reliable upward jarring force.
The hydraulic jar is generally used with long-chain alkyl silicone oil, with smaller viscosity. The viscosity of the hydraulic oil shall be selected according to the underground temperature.
Note: More sizes available on request.
