Dual injection points in SAGD
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United States of America Patent
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Aug 22, 2017
Issued Date -
Oct 4, 2012
app pub date -
Mar 19, 2012
filing date -
Mar 29, 2011
priority date (Note) -
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Abstract
A method for recovering petroleum from a formation, wherein at least two injection wells and at least one production well are in fluid communication with said formation, comprising: introducing a gaseous mixture into a first and a second injection well at a temperature and a pressure, wherein said gaseous mixture comprises steam and non-condens able gas (NCG); and recovering a fluid comprising petroleum from said production well, wherein said injection wells and a production well are horizontal wells, and wherein said first injection well is disposed 1-10 meters above said production well, and said second injection well is disposed at least 5 meters above said first injection well.
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