G - Physics – 06 – F
Patent
G - Physics
06
F
73/102
G06F 17/00 (2006.01) E21B 47/12 (2006.01)
Patent
CA 1261174
ABSTRACT OF THE DISCLOSURE There is described a memory gauge for obtaining information pertinent to an environmental condition in a well bore. The memory gauge can repetitively sample the environmental condition in a well bore at sample rate intervals so that information pertinent to the environmental condition is obtained in correspondence with the sampling. A circuit is connected with the sampling, to sample the environmental condition to obtain information pertinent thereto whenever the environmental condition changes at a rate passing a predetermined threshold irrespective of the sample rate intervals. The circuit can sense the environ- mental condition and provide an electrical signal having a characteristic which changes with changes in the environ- mental condition. It can define a rate-of-change threshold and can determine in response to the electrical signal and the characteristic thereof, whenever the environmental condition changes at a rate passing the defined rate-of- change threshold irrespective of the sample rate intervals. In response to the above, the circuit also provides a control signal to the sampling to cause the latter to sample the environmental condition.
586273
Anderson Terry O.
Dant Ronald E.
Donaghe Charles D.
Duncan Richard L.
Forehand Gilbert H.
Company Halliburton
Norton Rose Or S.e.n.c.r.l. S.r.l./llp
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