THERMAL PULSING PROCEDURE FOR REMEDIATION OF COLD SPOTS IN STEAM ASSISTED GRAVITY DRAINAGE
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United States of America Patent
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Issued Date -
Dec 12, 2013
app pub date -
Jun 7, 2013
filing date -
Jun 8, 2012
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Abstract
A method for remediation of at least one cold spot in a producer well in a Steam Assisted Gravity Drainage (SAGD) process to increase hydrocarbon recovery from a hydrocarbon reservoir, wherein the SAGD process occurs at a site including an injection well, a production well and a steam chamber. The method includes shutting the production well and maintaining or increasing steam injection through the injection well until pressure in the steam chamber increases. The production well is then resumed while continuing steam injection at rates for normal SAGD or greater until reservoir pressure reaches normal operational pressure. Optionally, the injection/production is adjusted to return to normal SAGD operation.
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