Non basepipe-welded accessory attachment
AssigneeSchlumberger Technology Corporation
InventorsMichael D. Langlais, Tage Thorkildsen
Life of this patent
Estimating the term…
Abstract
A gripping apparatus is provided having a stop collar with an accessory hardware coupled or otherwise attached thereto so as to not weld the accessory hardware directly to a production tubular. The gripping apparatus is adapted to grippingly engage the production tubular for downhole hydrocarbon recovery applications, and the accessory hardware can be a bracket or ring configured to support alternate path shunt tubes. The stop collar can also include centralizer blades coupled directly thereto, instead of welding the centralizer blades to the production tubular.
Claims23
A gripping assembly, comprising:
- an annular main body having a central portion defining opposing first and second tapered surfaces;
- a lead ring threadably coupled to the main body;
- a packer ring threadably coupled to the main body;
- a first lock ring slidably disposed between the lead ring and the first tapered surface, wherein an end of the lead ring abuts an end of the first lock ring;
- a second lock ring slidably disposed between the packer ring and the second tapered surface, wherein tightening the lead ring to the main body and tightening the packer ring to the main body forces the first and second lock rings into gripping engagement between the opposing first and second tapered surfaces and an outer surface of a production tubular, thereby preventing axial movement of the gripping assembly along the production tubular;
- and
- an accessory hardware coupled to the packer ring.
A gripping apparatus, comprising:
- an annular main body having a central portion defining opposing first and second tapered surfaces;
- a lead ring threaded to the main body;
- a packer ring threaded to the main body;
- a first lock ring slidably disposed between the lead ring and the first tapered surface, wherein an end of the lead ring abuts an end of the first lock ring, and a second lock ring slidably disposed between the packer ring and the second tapered surface, wherein tightening the lead ring to the main body and tightening the packer ring to the main body forces the first and second lock rings into gripping engagement between the opposing first and second tapered surfaces and an outer surface of a production tubular, thereby preventing axial movement of the gripping assembly along the production tubular;
- and
- one or more centralizer blades coupled to an outer surface of the annular main body and extending radially therefrom.
A gripping apparatus, comprising:
- an annular main body having a central portion defining opposing first and second tapered surfaces, the annular main body further comprising an accessory hardware component;
- a lead ring threaded to the main body;
- a packer ring threaded to the main body;
- and
- a first split lock ring slidably disposed between the lead ring and the first tapered surface, wherein an end of the lead ring abuts an end of the first split lock ring, and a second split lock ring slidably disposed between the packer ring and the second tapered surface, and wherein tightening the lead ring to the main body and tightening the packer ring to the main body forces the first and second split lock rings into gripping engagement between the opposing first and second tapered surfaces and an outer surface of a production tubular, thereby preventing axial movement of the gripping assembly along the production tubular.
Dependencies are inferred from the claim text.