Tool for measuring pressure in an oil well

Details Tool for measuring pressure in an oil well Tool for measuring pressure in an oil well

1987-10-23

1989-02-07

LaRoche, Eugene R.

Measuring and testing

Borehole or drilling

Downhole test

166250, 166319, 166331, E21B 4700

Patent

active

048023590

ABSTRACT:
The invention relates to a tool for measuring pressure in the annular space lying between casing and the production string of an oil well. The tool comprises two sliding elements, with the first element being temporarily locked in a section of the string constituting a circulating valve and with the second element carrying a pressure sensor which receives the pressure reigning in the annular space via a duct and orifices of the circulating valve after they have been brought into register.

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patent: 4403659 (1983-09-01), Upchurch
patent: 4440221 (1984-04-01), Taylor et al.
patent: 4452313 (1984-06-01), McMahan
patent: 4453599 (1984-06-01), Fredd
patent: 4605074 (1986-08-01), Barfield

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