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US 12,747,740 B2Granted
Stator assembly for electric submersible pump
AssigneeNational Oilwell Varco, L.P.
InventorsJames Rhys-Davies, Mitchell Crane, Jason Myska
Life of this patent
Estimating the term…
Abstract
A stator assembly for an ESP. The assembly can include stators with tabs and corresponding slots that prevent rotation of the stators during use in downhole activities.
Claims16
An electric submersible pump assembly comprising:
- a motor coupled to a pump,
- wherein the pump comprises:
- a housing;
- one or more rotors within the housing;
- and
- stators on the housing and removably attached to the rotors,
- wherein the stators comprise a longitudinal axis, an interior wall, an exterior wall, a first open end, and a second open end, wherein the first open end includes a first chamfer that tapers radially outward from a lip to the exterior wall and the second open end includes a second chamfer that tapers radially outward from a lip recess to the exterior wall, and wherein the exterior wall is a uniform cylindrical surface between the first chamfer and the second chamfer;
- wherein the first open end comprises one or more tabs extending from the lip, wherein the lip comprises an end surface that is completely perpendicular to the longitudinal axis, an interior wall that extends from the lip end surface uniformly parallel to the longitudinal axis, and an exterior wall parallel to the longitudinal axis;
- wherein the lip recess is configured to receive the lip and one or more slots to receive the one or more tabs;
- and
- wherein the one or more tabs and the one or more slots to receive the one or more tabs are internal to the stators.
8 more elements
An electric submersible pump assembly comprising:
- a pump comprising:
- a housing;
- a first stator and a second stator on the housing, wherein the stators are removably attached to corresponding rotors,
- wherein each stator comprises a longitudinal axis, an interior wall, an exterior wall, a first open end, and a second open end, wherein the first open end includes a first chamfer that tapers radially outward from a lip to the exterior wall and the second open end includes a second chamfer that tapers radially outward from a lip recess to the exterior wall, and wherein the exterior wall is a uniform cylindrical surface between the first chamfer and the second chamfer;
- wherein the first open end comprises one or more tabs extending from the lip, wherein the lip comprises an end surface that is completely perpendicular to the longitudinal axis, an interior wall that extends from the lip end surface uniformly parallel to the longitudinal axis, and an exterior wall parallel to the longitudinal axis;
- wherein the lip recess and one or more slots are configured to receive the lip and the one or more tabs;
- wherein the one or more tabs and the one or more slots configured to receive the one or more tabs are internal to the stators.
4 more elements
A stator assembly comprising:
- one or more stators removably attached to one or more rotors,
- wherein the stators comprise a longitudinal axis, an interior wall, an exterior wall, a first open end, and a second open end, wherein the first open end includes a first chamfer that tapers radially outward from a lip to the exterior wall and the second open end includes a second chamfer that tapers radially outward from a lip recess to the exterior wall, and wherein the exterior wall is a uniform cylindrical surface between the first chamfer and the second chamfer,
- wherein the first open end comprises one or more tabs extending from the lip, wherein the lip comprises an end surface that is completely perpendicular to the longitudinal axis, an interior wall that extends from the lip end surface uniformly parallel to the longitudinal axis, and an exterior wall parallel to the longitudinal axis;
- and
- wherein the lip recess is configured to receive the lip and the one or more tabs;
- wherein the one or more tabs and the lip recess configured to receive the lip and the one or more tabs are internal to the stators.
3 more elements
Dependencies are inferred from the claim text.