J-A MECHANICAL LINER HANGER
J-A mechanical liner hanger is designed with single cone and single row slips structure, manufactured with a J-slot on the main body. Set by picking up right-hand rotation.
1. Large bypass area for liner hanger because of flow slot on the cone.
2. A J-slot guides the guiding pin for hanger setting. The liner hanger can be set easily by picking up the drill string, using right hand rotation to achieve 1/2 turn at the hanger position and lowering the drill string. J-slot designment avoids setting in advance.
3. The liner hanger system without cylinder and setting ball, set by the friction between bow spring and the wall of upper casing, which is suitable for a liner string with several hydraulically activated tools.
4. Setting tool can be easily released just by slacking off certain weight and using right hand rotation.
5. Retrievable pack-off bushing can be retrieved with setting tool, avoid drilling-out.
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