Patent ID: 8631873

Claim:
A suspension arrangement for completing an oil and gas well comprising, a cylindrical tubing hanger housing body ( 120 ) made from non-CRA steel, a production tubing ( 220 ) having an extension sleeve ( 221 ) extending upwardly from an upper portion of said production tubing ( 220 ), said production tubing ( 220 ) and said extension sleeve ( 221 ) made from CRA steel, said extension sleeve ( 221 ) being threadedly connected to said tubing hanger housing body ( 120 ), and a seal sub ( 500 ) of CRA material designed and arranged to be installed within said tubing hanger housing body ( 120 ) and to fit within said extension sleeve ( 221 ), said seal sub ( 500 ) creating a metal to metal seal ( 210 ) with said extension sleeve ( 221 ) whereby production fluid that flows upwardly through said production tubing ( 220 ) and extension sleeve ( 221 ) and said seal sub ( 500 ) does not touch said tubing hanger housing body ( 120 ).