Jarring apparatus
AssigneeRotojar Innovations Limited
InventorPeter Barnes Moyes
Life of this patent
Estimating the term…
Abstract
A jarring apparatus includes first and second jarring assemblies which are axially moveable relative to each other between first and second axial configurations, and a thrust assembly interposed between the first and second jarring assemblies to limit relative axial movement therebetween at the second axial configuration and permit axial loading in one axial direction to be transferred between the first and second jarring assemblies via the thrust assembly. The apparatus further includes a jarring mass axially moveable within the jarring apparatus in reverse first and second directions upon relative rotation between the first and second jarring assemblies.
Claims29
A jarring apparatus, comprising:
- first and second jarring assemblies configured to be axially moveable relative to each other between first and second axial configurations;
- a thrust assembly interposed between the first and second jarring assemblies configured to
- limit relative axial movement therebetween at the second axial configuration and
- permit axial loading in one axial direction to be transferred between the first and second jarring assemblies via the thrust assembly;
- and
- a jarring mass configured to be axially moveable within the jarring apparatus in a first axial direction and a second axial direction in response to relative rotation between the first and second jarring assemblies, the first axial direction being opposite the second axial direction,
- wherein respective loading faces on the first and second jarring assemblies define at least a portion of the thrust assembly, wherein the respective loading faces are axially engaged when the first and second jarring assemblies reach the second axial configuration.
A method for providing jarring, comprising:
- establishing relative axial movement between first and second jarring assemblies of a jarring apparatus from a first axial configuration towards a second axial configuration;
- limiting relative axial movement between the first and second jarring assemblies at the second axial configuration by a thrust assembly;
- establishing relative rotational movement between the first and second jarring assemblies to move a jarring mass in a first axial direction and a second axial direction, wherein the first axial direction is opposite the second axial direction;
- and
- axially engaging respective loading faces on the first and second jarring assemblies based on the first and second jarring assemblies reaching the second axial configuration.
A method for providing jarring, comprising:
- establishing relative axial movement between first and second jarring assemblies of a jarring apparatus from a first axial configuration towards a second axial configuration;
- limiting relative axial movement between the first and second jarring assemblies at the second axial configuration by a thrust assembly;
- and
- establishing relative rotational movement between the first and second jarring assemblies to move a jarring mass in reverse first and second directions;
- wherein the establishing relative axial movement between the first and second jarring assemblies from the first axial configuration towards the second axial configuration energises a force mechanism which functions to bias a jarring mass in a first axial direction.
Dependencies are inferred from the claim text.