E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
166/51
E21B 17/01 (2006.01) E21B 34/04 (2006.01) E21B 34/10 (2006.01) E21B 34/00 (2006.01)
Patent
CA 1165230
Otis 4-111 TEST TREE Abstract of the Disclosure A subsurface test tree so compact in its vertical dimen- sion that the entire tree can be positioned below the blind rams in a blowout preventer stack. When the stinger is removed the remaining valve section of the tree will be below the blind rams in any conventional blowout preventer stack. The valve operators are split, one carried by the stinger and one carried in the valve housing with the arrangement of operator and valve in the housing providing an extremely small vertical dimension. A dome charge is effective on a piston to drive a ball valve to closed position to cut a line extending through the ball valve and to provide sequential operation between the ball valve on bottom and the valve thereabove which may be a flapper valve so that the lower valve closes and the line is cut before the upper valve closes. In one form the invention includes a subsurface safety valve below the test tree operated by one of control or balance pressure fluid.
397189
Otis Engineering Corporation
Smart & Biggar
LandOfFree
Test tree does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Test tree, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Test tree will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-693650