▎ 摘　　要

NOVELTY - A cavity power section comprises rotor, and a stator comprising a metal outer tubular (20) and a graphene-enhanced elastomeric stator inner liner (30). The elastomeric material of the inner liner comprises graphene particles and rubber. USE - Cavity power section is used for mud motor used in downhole drilling operation. ADVANTAGE - The graphene particles can increase polymer to filler interactions in the overall structure of the elastomeric stator, thereby enhancing the structure of the stator and increasing the durability of stator by providing additional structural and thermal dissipation benefits, and provide lower coefficient of thermal expansion for the rubber compound, which can reduce damaging heat build-up and extend the useful life of a power section. The mud motor provided with the cavity power section has excellent downhole drilling reliability. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for formation of graphene-enhanced elastomeric stator, which involves forming metal outer tubular of the stator, and forming graphene-enhanced elastomeric stator inner liner. The formation of elastomeric material of the inner liner involves adding a co-agent to an elastomeric material mixture to bridge peroxide-induced cross-links. DESCRIPTION OF DRAWING(S) - The drawing shows a perspective cross-sectional view of an elastomeric stator assembly. Graphene-enhanced elastomeric stator assembly (10) Metal outer tubular (20) Graphene-enhanced elastomeric stator inner liner (30) Elastomeric stator liner inner wall (32)