Apparatus for amorphous bonding of tubulars especially during construction of oil and gas wells characterised by the tubulars are axial in alignment and surrounded by a shield gas

摘要

An apparatus for amorphous bonding of tubulars (110, 111) comprises a double skin jacket (2, 113, 114) which can be placed around tubulars (110, 111). The skins define a sealed inner fluid space (11, 121) which contains shield gas and a heating element (1, 129) and a sealed outer fluid space (9, 119) surrounding the inner fluid space (11, 121) to reduce the risk of explosion during the amorphous bonding process.