Wells – Above ground apparatus – With assembly or disassembly means
Patent
1995-09-19
1997-04-01
Taylor, Dennis L.
Wells
Above ground apparatus
With assembly or disassembly means
166 861, 166 862, 166 951, E21B 3306
Patent
active
056157371
ABSTRACT:
Apparatus for inserting full bore tools into an earth borehole, such as oil and gas wells, includes: a blowout preventer assembly superimposed on the wellhead of the borehole; a seal body having an internal concentric seal diameter, superimposed on the blowout preventer assembly; a tubular mandrel concentrically engaged with the seal diameter of said seal body, with a standpipe attached thereto; a tubular bell nipple connected to the seal body; and a pack-off assembly disposed between the internal diameter of the standpipe and a workstring inserted into the earth borehole.
The blowout preventer assembly, seal body, and bell nipple are typically installed on the wellbore when well operations commence. During ordinary, unpressurized wellbore operations a seal diameter protector may be installed in the seal body. When wellbore pressure is present or may be expected (such as operations conducted during underbalanced conditions), the seal diameter protector is removed, the tubular mandrel and standpipe sealingly engaged with the seal diameter of the seal body, and a pack-off assembly installed between the internal diameter of the standpipe and the workstring. The tubular mandrel and standpipe internal diameters are at least as large as the bore of the wellbore, permitting introduction of full bore tools into the wellbore. As no part of the apparatus extends into the blow-out preventer stack, there is no loss of blow-out preventer redundancy while using the apparatus.
REFERENCES:
patent: 1635749 (1927-07-01), Hosmer
patent: 2889886 (1949-06-01), Gould
patent: 4553591 (1985-11-01), Mitchell
patent: 4828024 (1989-05-01), Roche
patent: 4915178 (1990-04-01), Goldschild
patent: 5178215 (1993-01-01), Yenulis et al.
patent: 5465788 (1995-11-01), Wright
Lambert Jesse D.
Taylor Dennis L.
LandOfFree
Apparatus for insertion of full bore tools into an earth borehol does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus for insertion of full bore tools into an earth borehol, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for insertion of full bore tools into an earth borehol will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-532762