Verification of a surface controlled subsurface actuating device

Details Verification of a surface controlled subsurface actuating device Verification of a surface controlled subsurface actuating device

1985-05-03

1986-10-21

Cohan, Alan

Fluid handling

With indicator, register, recorder, alarm or inspection means

Position or extent of motion indicator

166250, 340855, 340856, 324323, 1372361, F16K 3700

Patent

active

046179607

ABSTRACT:
A system for verifying the effectiveness of electromagnetic signal control of a subsurface safety valve installed in a well. Signals are transmitted from a surface station to actuate the subsurface installed valve. Signals received at the valve are decoded and information relating to them is stored. A sensor detects actual valve actuation and provides signals indicative thereof which are also stored. After the valve is removed from its downhole installation, the stored signals are read, and the data indicated thereby is compared with data recorded at the time of signal transmission from the surface.

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patent: 3967201 (1976-06-01), Roden
patent: 3975674 (1976-08-01), McEven
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patent: 4216536 (1980-08-01), More
patent: 4337829 (1982-07-01), Banzoli et al.
patent: 4468665 (1984-08-01), Thawley et al.

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