Appeal No. 97-1403
Application No. 08/275,214
for measuring a differential pressure over a predefined
differential measurement distance.
Claim 1 is illustrative of the claimed invention, and it
reads as follows:
1. A method for validating pressure test data obtained from
a well, said method comprising the step of:
(a) extending a pressure measurement instrument into said
well to a predetermined depth in said well, said pressure
measurement instrument having a pair of gauges, a first gauge for
measuring absolute pressure, and a second gauge for measuring a
differential pressure over a predefined differential measurement
distance;
(b) periodically sending a signal to said pressure
measurement instrument to initiate a measurement of pressure
inside said well;
(c) receiving a set of measurements resulting from said
signal sent in step (b), said set comprising an absolute pressure
measurement from said first gauge and a differential pressure
measurement from said second gauge;
(d) for each of said set of measurements obtained in
step (c), displaying said absolute pressure measurement on a
display device;
(e) for each of said set of measurements obtained in step
(c), using said differential pressure to determine a type of
fluid surrounding said pressure measurement instrument;
(f) when said type of fluid obtained in step (e) differs
from a type of fluid determined from an immediately previous set
of measurements, indicating a fluid boundary on said display
device; and
(g) validating any discontinuties [sic, discontinuities]
which may occur in said absolute pressure measurements by
reference to said fluid boundary.
The references relied on by the examiner are:
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