Patent ID: 11859475
Assignee: HALLIBURTON ENERGY SERVICES, INC.
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC E  F  H | IPC E  F

Claim 0:
1. An electric submersible pump, comprising:
a pump;
an electric motor that is coupled to the pump; and
a seal positioned between the pump and the electric motor, the seal having an outer housing and a seal bag internal to the outer housing, the seal bag including an outer layer and an inner layer, the outer layer being made from a first material to retain a structure of the outer layer in a swellable state in a wellbore, the inner layer being made from a second material that is swellable in the wellbore in response to contact with a polar substance to seal a tear in the outer layer, wherein the outer layer has a surface that comprises a third material to prevent friction coupling of the outer layer in the swellable state to an inside surface of the outer housing, the third material different than the first material and the second material.