Corrosion-resistant downhole transmission system
AssigneeIntelliServ, Inc.
InventorsDavid R. Hall, Scott Steven Dahlgren, Pierre A. Smith
Life of this patent
Estimating the term…
Abstract
An apparatus in accordance with the invention may include a downhole tool and a data transmission path incorporated into the downhole tool. The data transmission path may include one or more contact surfaces providing electrical continuity to the data transmission path. To protect the contact surfaces from corrosion while maintaining electrical conductivity, a coating may be attached to one or more of the contact surfaces. The coating may include any of various materials that increase the corrosion-resistance of the underlying base metal, including but not limited to cobalt, nickel, tin, tin-lead, platinum, palladium, gold, silver, zinc, or combinations thereof.
Claims14
An apparatus comprising:
- a downhole tool comprising a pin end, a box end, and an annular recess formed in at least one of the box end and the pin end;
- an annular transmission element comprising an electrically-conductive annular housing, wherein the housing resides in and electrically contacts the annular recess;
- and
- a coating attached to at least one of the annular housing the annular recess, wherein the coating is electrically-conductive and corrosion-resistant,
- wherein the coating comprises a material selected from the group consisting of nickel, cobalt, mixtures thereof, compounds thereof, and combinations thereof.
An apparatus comprising:
- a downhole tool comprising a first end, a second end, and an annular recess formed in at least one of the first end and the second end;
- an annular transmission element comprising an electrically-conductive annular housing, wherein the housing resides in and electrically contacts the annular recess;
- and
- a coating attached to at least one of the annular housing the recess, wherein the coating is electrically-conductive and corrosion-resistant
- wherein the coating comprises a material selected from the group consisting of nickel, nickel alloy, cobalt, and cobalt alloys.
Dependencies are inferred from the claim text.