Casing friction reduction methods and tool
AssigneeSaudi Arabian Oil Company
InventorsAbdulaziz Al-Qasim, Mohammed Al-Arfaj, Mohammad Saud Al-Badran, Sunil Kokal
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Abstract
Systems and methods for reducing friction between a casing string and a bore of a subterranean well when moving the casing string within the bore of a subterranean well include a roller bearing assembly. The roller bearing assembly has a bearing body and a plurality of spherical bearings spaced around an outer diameter of the bearing body. The bearing body is secured in line with the casing string.
Claims19
A system for reducing friction between a casing string and a bore of a subterranean well when moving the casing string within the bore of the subterranean well, the system having:
- a roller bearing assembly including:
- a bearing body;
- and
- a plurality of spherical bearings spaced around an outer diameter of the bearing body, each of the spherical bearing located within a port that extends through a sidewall of bearing body and being secured within the sidewall of the bearing body by an individual plug threaded into an inner diameter surface of the bearing body, such that each of the spherical bearing extends radially outward from the outer diameter surface of the bearing body;
- where
- the bearing body is secured in line with the casing string, the casing string being positionable for cementing within the subterranean well.
A method for reducing friction between a casing string and a bore of a subterranean well when moving the casing string within the bore of the subterranean well, the method including:
- securing a roller bearing assembly in line with the casing string, where the roller bearing assembly includes:
- a bearing body;
- and
- a plurality of spherical bearings spaced around an outer diameter of the bearing body, each of the spherical bearings located within a port that extends through a sidewall of bearing body and secured within the sidewall of the bearing body by an individual plug threaded into an inner diameter surface of the bearing body, such that each of the spherical bearings extends radially outward from the outer diameter surface of the bearing body;
- moving the casing string through the bore of the subterranean well;
- and
- cementing the casing within the subterranean well.
A system for reducing friction between a casing string and a bore of a subterranean well when moving the casing string within the bore of the subterranean well, the system having:
- a roller bearing assembly including:
- a bearing body;
- and
- a plurality of spherical bearings spaced around an outer diameter of the bearing body, each of the spherical bearings being located within a port that extends through a sidewall of bearing body and being secured within the sidewall of the bearing body by an individual plug threaded into an inner diameter surface of the bearing body, such that each of the spherical bearings extends radially outward from the outer diameter surface of the bearing body, where
- the casing string is positionable for cementing within the subterranean well.
Dependencies are inferred from the claim text.