Wells – Processes – With indicating – testing – measuring or locating
Patent
1999-11-04
2000-10-03
Suchfield, George
Wells
Processes
With indicating, testing, measuring or locating
166 66, 7315251, 7315252, E21B 3314, E21B 4706
Patent
active
061259357
ABSTRACT:
A method for monitoring a cementing operation is disclosed for predicting whether an effective formation-to-casing seal has been formed across an annulus of a well. In this method a distributed well monitoring system is installed in the annulus of the well before the cement is pumped. Once pumped, the cement is monitored substantially along the annulus. The pressure in the annulus is determined at cement transition and this pressure is compared to the maximum formation pressure as an indication of whether the cement had set to a strength sufficient to maintain an effective formation-to-casing seal across the annulus.
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Shell Oil Company
Smith Mark A.
Suchfield George
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