Patent ID: 11821265

Abstract:
A modified tubular system for use in connection with the recovery of subsurface minerals and fluids. The tubulars may include drill pipes, risers, production tubing, and tools integrated into such tubulars. Such tubulars may be interconnected using tool joints or threaded tubular sections. Some tool joints may comprise annular shoulders. The shoulders may comprise an annular groove for housing an inductive coupler that may include magnetically conductive electrically insulating (MCEI) trough and an electrically conductive coil laid within the trough. An axial passageway formed in the shoulder may open into the groove. The passageway may comprise flutes. The flutes maybe formed in the wall of the passageway or added to the passageway as an insert or as part of a passageway liner. A fluted transmission line may be disposed within the passageway. The transmission line and liner flutes may mate with the passageway flutes. The liner may be hardened.