PROCESS FOR OBTAINING VISCOUS MINERAL OIL FROM AN UNDERGROUND DEPOSIT
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United States of America Patent
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Issued Date -
Dec 27, 2012
app pub date -
Jun 21, 2012
filing date -
Jun 22, 2011
priority date (Note) -
Abandoned
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Abstract
The invention provides a process for producing mineral oil from an underground mineral oil deposit into which at least one injection well which is in contact with the mineral oil deposit via at least one perforation zone and at least one production well have been sunk, comprising injecting at least one aqueous urea solution into the injection well and pressure-injecting the aqueous urea solution through the perforation zone into the mineral oil deposit, wherein the aqueous urea solution on pressure injection into the mineral oil deposit is at a temperature of at least 80° C.
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