Wells – Processes – Producing the well
Patent
1979-06-19
1980-10-28
Novosad, Stephen J.
Wells
Processes
Producing the well
166 65R, 166363, 137458, 137488, E21B 4301, F15B 2000, F16K 1736
Patent
active
042301874
ABSTRACT:
This invention relates to methods and apparatus for monitoring fluid pressure in a subsea petroleum installation or other similarly inaccessible system while isolating the well fluid from the production control system. In one particular form of the invention, a body of secondary fluid is pressure-responsively coupled to but isolated from the oil or other primary fluid of interest by a piston, which subjects the secondary fluid to the pressure existing on the primary fluid. In addition, a measuring device is connected to the secondary fluid to derive an electrical signal representation of the pressure on the secondary fluid as a correlative indication of the wellhead or other pressure actually sought to be measured. Further, the isolating device is constructed and arranged to effectively seal off the primary fluid from escape into the environment or into the production control apparatus and the pressure of the primary fluid is maintained in the event of damage to any portion of the chamber enclosing and holding the secondary fluid. It is a particular feature of this invention to provide at least a minimum pressure on the secondary fluid of a magnitude such as to effectively limit the further compression of the secondary fluid by the piston, when the piston is initially subjected to the primary pressure.
REFERENCES:
patent: Re29638 (1978-05-01), Nutter
patent: 3198207 (1965-08-01), Willis et al.
patent: 3252476 (1966-05-01), Page, Jr.
patent: 3338302 (1967-08-01), Hubby
patent: 3389718 (1968-06-01), Johnson et al.
patent: 3452592 (1969-07-01), Voetter
patent: 3712129 (1973-01-01), Rhoades
patent: 3898877 (1975-08-01), McArthur
patent: 3920040 (1975-11-01), Powell
patent: 3963050 (1976-06-01), Theriot et al.
patent: 4046006 (1977-09-01), Dufrene
Haskel Engineering & Supply Co., Bulletin M-38, "Haskel Gauge Isolation Debooster", 1-1977, 2 pages.
Brickman Eugene L.
Fitzgibbons Michael R.
Seto Rodney K. M.
Connors John J.
Novosad Stephen J.
Nyhagen Donald R.
TRW Inc.
LandOfFree
Methods and apparatus for sensing wellhead pressure does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Methods and apparatus for sensing wellhead pressure, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Methods and apparatus for sensing wellhead pressure will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-263815