Patents Examined by Elieen Dunn Lillis
  • Subsea test tree and methods of servicing a subterranean well
    Patent number: 6026905
    Abstract: A subsea test tree and associated methods of servicing a well provide enhanced safety in testing operations. In a described embodiment, a subsea test tree includes a latch head assembly, a valve assembly, and a ramlock assembly interconnected between the latch head assembly and the valve assembly. The valve assembly includes two safety valves, one of which is operable by displacing a piston within the latch head assembly. The other safety valve is operable by applying fluid pressure to a line connected to the latch head assembly.
    Type: Grant
    Filed: March 19, 1998
    Date of Patent: February 22, 2000
    Assignee: Halliburton Energy Services, Inc.
    Inventor: Virgilio Garcia-Soule