Earth boring – well treating – and oil field chemistry – Well treating – Contains organic component
Reexamination Certificate
2011-04-19
2011-04-19
Kugel, Timothy J. (Department: 1763)
Earth boring, well treating, and oil field chemistry
Well treating
Contains organic component
C507S225000, C507S244000, C166S305100
Reexamination Certificate
active
07928041
ABSTRACT:
Methods for treating a portion of a well include the steps of: (a) forming a treatment gel comprising a polymer or a polymer system of a mixture of two or more polymers, wherein the polymer or the polymer system is capable of each of the following, when tested at least one concentration in the range of 2-10 times C* in deionized water, at about 22° C., and at about 1 atmosphere pressure: (i) forming a polymer gel of the polymer and water at least one pH in the range of 4-9, wherein a bulk form of the polymer gel has a G′ greater than G″ at all frequencies in the range of 1 rad/sec-100 rad/sec; (ii) dissolving at least one pH in the range of 2-4; and (iii) dissolving at least one pH in the range of 9-12; (b) dispersing the treatment gel in a fluid to form a treatment fluid; (c) introducing the treatment gel in a treatment fluid into a portion of a well; and (d) after the step of introducing the treatment gel, adjusting the pH of the treatment gel to at least one pH in the range of 2-4 or 9-12.
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Bajomo Mike A.
Bismarck Alexander
Robb Ian D.
Steinke Joachim
Booth Albanesi & Schroeder LLC
Halliburton Energy Service,s Inc.
Kent Robert A.
Kugel Timothy J.
Li Aiqun
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