Blowout preventer stacks and method of tensioning stack tie rods

Details Blowout preventer stacks and method of tensioning stack tie rods Blowout preventer stacks and method of tensioning stack tie rods

1984-04-19

1986-04-08

Leppink, James A.

Wells

Above ground apparatus

With assembly or disassembly means

166 751, 166379, 81 5738, 403260, E21B 1900, B25B 2902

Patent

active

045806284

ABSTRACT:
An improved blowout preventer stack including a plurality of ram type blowout preventers, an annular blowout preventer, a plurality of tie rods connecting said blowout preventers into a stack, the upper ends of the rods being secured to the side of the upper member of the stack and the lower end of the rods being secured to the lower end of the stack with securing means to maintain the preset tension in the tie rods. An improved test stump is provided to support the stack and connect to and exert tension on the tie rods responsive to pressure supplied to the test stump to preset the tension therein. The improved method of the present invention includes the step of assembling the components into a stack supported on the test stump, securing the tie rods to the upper member of the stack, connecting the pressure responsive means of the test stump to the lower end of the tie rods, supplying pressure to the pressure responsive means of the test stump to pretension the tie rods and tightening the securing means on the end of the tie rods to maintain the preset tension in the tie rods.

REFERENCES:
patent: 2749078 (1956-06-01), Losey
patent: 3015975 (1962-01-01), Biach
patent: 3391735 (1968-07-01), Schramm et al.
patent: 4007782 (1977-02-01), Nybo et al.
patent: 4246810 (1981-01-01), Keske
patent: 4268011 (1981-05-01), Randall

Affiliated with

Also associated with

Rating

Blowout preventer stacks and method of tensioning stack tie rods does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Blowout preventer stacks and method of tensioning stack tie rods, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Blowout preventer stacks and method of tensioning stack tie rods will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2060782