US Patent 7975772 Method and system of hydraulic control line connection

A method of coupling a first control line to a second control line is provided comprising the steps of prepping the first and second control lines to respectively produce a first end and a second end. Prepping may comprise inserting a plug assembly into at least one of the first or second ends prior to facing the end containing the plug assembly. The method may further include butt-welding the first end to the second end to form a splice and providing a protective assembly to cover the splice. The plug assembly may comprise a plug member, a seal, and an end piece to couple the seal to the plug member, in some embodiments. In other embodiments, the plug assembly may comprise a plug member and a seal coupled to the plug member.