Wells – Processes – Assembling well part
Patent
1985-10-28
1987-05-12
Novosad, Stephen J.
Wells
Processes
Assembling well part
166102, 166321, F21B 3410
Patent
active
046641963
ABSTRACT:
A downhole tool such as a tester valve originally constructed to operate with a compressible gas spring may be modified to operate with a compressible liquid spring. The volume of a spring chamber is increased. A differential area of a power piston is decreased. A flow restriction in a metering cartridge associated with the spring chamber is increased. Also, a relief valve is provided to allow fluid to be relieved from the tool into the well annulus upon expansion of the compressible liquid due to heating as the tool is lowered into a well if the expansion of liquid exceeds the available volume in the tool.
REFERENCES:
patent: 3856085 (1974-12-01), Holden et al.
patent: 4083409 (1978-04-01), Barrington
patent: 4109724 (1978-08-01), Barrington
patent: 4109725 (1978-08-01), Williamson et al.
patent: 4341266 (1982-07-01), Craig
patent: 4346770 (1982-08-01), Beck
patent: 4422506 (1983-12-01), Beck
patent: 4429748 (1984-02-01), Beck
patent: 4444268 (1984-04-01), Barrington
patent: 4448254 (1984-05-01), Barrington
patent: 4489786 (1984-12-01), Beck
patent: 4515219 (1985-05-01), Beck
patent: 4573535 (1986-03-01), Manke
Exhibit A--A drawing entitled "APR-N Tester Valve with Double-Volume Chamber".
Bagnell David J.
Halliburton Company
Novosad Stephen J.
Walkowski Joseph A.
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