Shock absorber stand
AssigneeSaudi Arabian Oil Company
InventorFathalla Shalouf
Life of this patent
Estimating the term…
Abstract
A shock stand absorber includes a resilient layer disposed on a planar frame structure and a plurality of vertical supports positioned to support the planar frame structure from below. Each of the vertical supports includes a resilient member between a first vertical support member and a second vertical support member in a telescoping arrangement. The resilient member is deformable in response to a telescoping movement between the first vertical support member and the second vertical support member. A plurality of connecting webs are formed between the vertical supports. The plurality of vertical supports are longitudinally aligned with a plurality of points on one or more paths defined on the bottom side of the planar frame structure.
Claims19
An apparatus comprising;
- a planar frame structure having a top side and a bottom side;
- a resilient layer disposed on the top side;
- a plurality of vertical supports positioned to support the planar frame structure from below, each of the vertical supports having a first vertical support member and a second vertical support member in a telescoping arrangement and a resilient member positioned between the first vertical support member and the second vertical support member, the first vertical support member coupled to the bottom side of the planar frame structure, the resilient member deformable in response to a telescoping movement between the first vertical support member and the second vertical support member;
- and
- a plurality of connecting webs formed between the vertical supports,
- wherein an inner diameter of the second vertical support member is larger than an outer diameter of the first vertical support member by a clearance.
A system of an oil rig, the system comprising;
- a mast with a target point and a contact side;
- an external drive coupled to the mast;
- an apparatus comprising:
- a planar frame structure having a top side and a bottom side;
- a resilient layer disposed on the top side;
- a plurality of vertical supports positioned to support the planar frame structure from below, each of the vertical supports having a first vertical support member and a second vertical support member in a telescoping arrangement and a resilient member positioned between the first vertical support member and the second vertical support member, the first vertical support member coupled to the bottom side of the planar frame structure, the resilient member deformable in response to a telescoping movement between the first vertical support member and the second vertical support member;
- and
- a plurality of connecting webs formed between the vertical supports;
- wherein the apparatus is disposed near the mast to prevent the mast from falling onto a ground.
A method comprising:
- determining a location on a floor of a rig site corresponding to a target point of a mast pivotally coupled to a substructure at the rig site when the mast is oriented horizontally relative to the floor;
- positioning a shock absorber stand at the location;
- pivoting the mast to raise or lower the mast relative to the floor;
- and
- absorbing a shock resulting from a collision of the mast with the shock absorber stand during pivoting of the mast, the absorbing by a resilient layer of the shock absorber stand positioned to contact the mast during the collision and by a plurality of resilient members positioned in a plurality of telescoping vertical supports of the shock absorber stand.
Dependencies are inferred from the claim text.