Patent ID: 11971004
Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
Field: Civil engineering (Other fields)
Classification: CPC F  E | IPC E  F

Claim 0:
1. A downhole turbine, comprising:
a hub comprising a wall, the wall comprising an inner surface, an outer surface, and an opening extending from the outer surface to the inner surface; and
a fin coupled to the hub, the fin comprising a first portion and a second portion, wherein:
the first portion is disposed on the outer surface and comprises a leading edge of the fin and a hub locking feature;
the second portion comprises a trailing edge of the fin, a backing, a locating feature, and a fin locking feature, wherein:
the fin locking feature is disposed in the hub locking feature;
the locating feature is disposed in the opening and engaged with a surface of the opening;
the backing is engaged with the inner surface; and
the trailing edge of the fin is movable relative to the backing; and

the second portion is changeable between a first exit angle and a second exit angle, the first exit angle and the second exit angle being different.