Wells – Processes – Distinct – separate injection and producing wells
Reexamination Certificate
2005-02-25
2008-03-25
Suchfield, George (Department: 3676)
Wells
Processes
Distinct, separate injection and producing wells
C166S275000, C166S294000, C166S295000, C166S300000, C166S305100, C507S209000, C507S211000, C507S222000, C507S225000, C507S230000, C507S903000
Reexamination Certificate
active
07347263
ABSTRACT:
A composition includes water having a salinity of at least 1 ppt, at least one hydrophilic polymer containing primary (—NH2) and/or secondary (—NHR) amine groups and at least one saccharide containing a reducible function. A method of changing the permeability of a subterranean formation includes the step of injecting into a subterranean formation a composition comprising water, at least one hydrophilic polymer containing at least two groups which are independently the same or different a primary amine group or a secondary amine group and at least one saccharide containing a reducible function.
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Beckman Eric J.
LoSasso Janice E.
LoSasso Ronald A.
Bartony & Hare, LLP
Suchfield George
University of Pittsburgh - of the Commonwealth of Higher Educati
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