Method to cement a wellbore
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United States of America Patent
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Apr 25, 1995
Grant Date -
N/A
app pub date -
May 23, 1994
filing date -
May 23, 1994
priority date (Note) -
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status (Latency Note)
Importance
Abstract
A method to cement a wellbore is provided wherein two fluids are transported into the wellbore through separate conduits, and combined within the volume to be cemented. The two fluids set to become a hardened cement after a short time period. The two fluids are preferably passed through a static mixer at the ends of the conduits within the wellbore to provide uniform contact between the two fluids. The two fluids are preferably a wellbore cement and an accelerator for that cement. Because the cement sets within a short time period, fluid loss from the wellbore is minimal. Additionally, the static head to which the formation is exposed is not excessive, even if a cement slurry having a density that exceeds the hydraulic fracture gradient of the formation is used.
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