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US 8,505,624 B2Granted
Integral pull-through centralizer
AssigneeHalliburton Energy Services, Inc.
InventorIain Levie
Life of this patent
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Abstract
A centralizer comprises a first body portion, a second body portion, a plurality of bow springs connecting the first body portion to the second body portion, and a window disposed in the first body portion. The centralizer may also have a wellbore tubular disposed longitudinally within the first body portion, the second body portion, and the plurality of bow springs, and an upset disposed on the surface of the wellbore tubular and within the window.
Claims20
A centralizer system comprising:
- a centralizer comprising:
- a first body portion;
- a second body portion;
- a plurality of bow springs connecting the first body portion to the second body portion;
- and
- a window disposed in the first body portion;
- a wellbore tubular disposed longitudinally within the first body portion, the second body portion, and the plurality of bow springs;
- and
- an upset disposed on the surface of the wellbore tubular and within the window, wherein the width of the window is greater than the width of the upset and is configured to allow rotational movement of the centralizer about the wellbore tubular with respect to the upset.
6 more elements
A method comprising:
- providing a centralizer disposed about a wellbore tubular comprising an upset disposed on a surface of the wellbore tubular, wherein the centralizer comprises:
- a first body portion;
- a second body portion;
- a plurality of bow springs connecting the first body portion to the second body portion, wherein the plurality of bow springs is rotatably coupled to the first body portion while being axially constrained with respect to the first body portion;
- and
- a window disposed in the first body portion;
- wherein the upset is disposed within the window;
- placing wellbore tubular in a wellbore disposed in a subterranean formation.
5 more elements
Dependencies are inferred from the claim text.