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US 12,692,962 B1Granted
Spring collar shoulder
AssigneeSchlumberger Technology Corporation
InventorsEdward George Parkin, Keith Lathan
Life of this patent
Estimating the term…
Abstract
A spring shoulder kit includes an expanding shoulder and a retaining sleeve. The expanding shoulder includes a wedge outwardly radially extending from a radially flexible finger. The retaining sleeve is slidably insertable into the expanding shoulder to block inward radial movement of the wedge.
Claims19
A spring shoulder kit comprising:
- an expanding shoulder insertable into an inner wall of a collar disposed in a wellbore, the expanding shoulder including:
- a ring;
- a finger axially extending from and flexibly pivotable relative to the ring, the finger having a first end;
- and
- a wedge outwardly radially extending from the finger at the first end, the wedge being configured to matingly radially outwardly snap into a groove defined in the inner wall of the collar;
- and
- a retaining sleeve slidably insertable into the expanding shoulder along the finger to block inward radial movement of the wedge,
- wherein the spring shoulder kit is configured to support an axial load of an internal assembly in the collar disposed in the wellbore, and the spring shoulder kit is configured to be positioned completely inside the collar between opposite axial ends of the collar, and
- wherein the retaining sleeve comprises a cylindrical wall extending axially from an annular flange, an inner diameter of the retaining sleeve is constant along an entire axial length of the retaining sleeve, an outer diameter of the retaining sleeve is larger along the annular flange than the cylindrical wall, the annular flange is configured to axially abut a first axial end of the expanding shoulder, the cylindrical wall is configured to extend inside of the expanding shoulder from the first axial end to an internal shoulder of the expanding shoulder, and the internal shoulder is disposed at an internal chamfer extending to a second axial end of the expanding shoulder.
6 more elements
A collar assembly comprising:
- a collar configured to be disposed in a wellbore, the collar including an inner wall defining a groove;
- and
- a spring shoulder kit selectively removably placeable within the collar disposed in the wellbore, the spring shoulder kit including:
- an expanding shoulder insertable into the inner wall of the collar disposed in the wellbore, the expanding shoulder including:
- a ring;
- a finger axially extending from and flexibly pivotable relative to the ring, the finger having a first end;
- and
- a wedge outwardly radially extending from the finger at the first end, the wedge being configured to matingly radially outwardly snap into the groove defined in the inner wall of the collar;
- and
- a retaining sleeve slidably insertable into the expanding shoulder along the finger to block inward radial movement of the wedge,
- wherein the spring shoulder kit is configured to support an axial load of an internal assembly in the collar disposed in the wellbore, and the spring shoulder kit is configured to be positioned completely inside the collar between opposite axial ends of the collar, and
- wherein the retaining sleeve comprises a cylindrical wall extending axially from an annular flange, an inner diameter of the retaining sleeve is constant along an entire axial length of the retaining sleeve, an outer diameter of the retaining sleeve is larger along the annular flange than the cylindrical wall, the annular flange is configured to axially abut a first axial end of the expanding shoulder, the cylindrical wall is configured to extend inside of the expanding shoulder from the first axial end to an internal shoulder of the expanding shoulder, and the internal shoulder is disposed at an internal chamfer extending to a second axial end of the expanding shoulder.
9 more elements
A method comprising:
- axially inserting an expanding shoulder of a spring shoulder kit into an inner wall of a collar disposed in a wellbore until a wedge of the expanding shoulder radially outwardly snaps via a radially flexible finger into an internal groove defined in the inner wall of the collar;
- and
- inserting a retaining sleeve of the spring shoulder kit into the expanding shoulder until the retaining sleeve contacts an internal shoulder of the expanding shoulder to outwardly radially hold the wedge in the internal groove, wherein the retaining sleeve has a radially outwardly extending flange slidably insertable along the inner wall of the collar, wherein the spring shoulder kit is configured to support an axial load of an internal assembly in the collar disposed in the wellbore, and the spring shoulder kit is configured to be positioned completely inside the collar between opposite axial ends of the collar.
Dependencies are inferred from the claim text.