Wells – Processes – With indicating – testing – measuring or locating
Reexamination Certificate
2006-10-31
2006-10-31
Suchfield, George (Department: 3676)
Wells
Processes
With indicating, testing, measuring or locating
C166S288000, C166S295000, C166S300000, C175S072000, C507S224000, C507S225000, C507S226000, C507S229000, C507S230000, C507S903000, C523S130000
Reexamination Certificate
active
07128148
ABSTRACT:
The present invention provides a method and treatment fluid for blocking the permeability of an elevated-temperature zone in a reservoir of a subterranean formation penetrated by a wellbore, the method comprising the steps of: a) selecting the zone to be treated, wherein the upper limit of the temperature range of the zone is equal to or greater than 190° F. (88° C.); b) forming a well treatment fluid comprising: water; a water-soluble polymer comprising polymerized vinyl amine units; and an organic compound capable of crosslinking with the vinyl amine units of the water-soluble polymer; c) selecting the water-soluble polymer and the organic compound of the well treatment fluid such that the gel time of the well treatment fluid is at least 2 hours when measured at the upper limit of the temperature range of the zone; and d) injecting the well treatment fluid through the wellbore and into the zone.
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Eoff Larry S.
Szymanski Michael J.
Crutsinger & Booth
Halliburton Energy Service,s Inc.
Kent Robert A.
Suchfield George
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