Method and apparatus to improve the displacement of drilling fluid by cement slurries during primary and remedial cementing operations, to improve cement bond logs and to reduce or eliminate gas migration problems
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United States of America Patent
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-
Jan 3, 1995
Grant Date -
N/A
app pub date -
Jun 24, 1993
filing date -
Jun 24, 1993
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Cement bonding and bond logs in wells are significantly improved by imparting random or periodic, pulsating, oscillating or vibrating pressure to the fluids present during all stages of a cementing operation. The effect is to eliminate gelation of the fluids to improve cement placement and to enable consolidation of the cement slurry. The pressure pulses can also be detected to monitor the condition of the setting slurry.
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Cited Art Landscape
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