Patent ID: 9074449
Filing Date: 2015-07-07
Classification: E21B

Abstract:
1. A production apparatus for use with a subsea wellhead comprising: a tubing head spool having an end suitable for connection to the wellhead, said tubing head spool having a production bore extending therethrough, said production bore having a tubing hanger arranged therein, said tubing hanger suitable for securing a pipe therein, said tubing head spool having a tubing head mandrel at an upper end thereof, said tubing head spool having a valve block formed thereon, said valve block having a master flowline in communication with said production bore, said master flowline extending outwardly of a side of said tubing head spool, said master flowline being permanently sealed closed, said tubing head spool having an annulus formed around said production bore, a vertical tree having an annulus flowline in communication with said annulus of said tubing head spool, said annulus flowline being permanently sealed closed, said tubing head spool being a previously-used horizontal Christmas tree; and said vertical tree having a tree connector at a lower end thereof, said vertical tree having a flowline extending therethrough, said tree connector affixed to said tubing head mandrel of said tubing head spool, said flowline being in valved fluid communication with said production bore of said tubing head spool, said flowline extending outwardly of said vertical tree so as to allow a flow of production fluids outwardly of said vertical tree.