Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...
Patent
1985-05-24
1986-09-23
Griffin, Ronald W.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Processes of preparing a desired or intentional composition...
106162, 106186, 166246, 166270, 166271, 166275, E21B 33138, E21B 4322, C09K 700
Patent
active
046136312
ABSTRACT:
Polymers used in enhanced oil recovery operations, including polysaccharides, polyamides and cellulose derivatives may be crosslinked by the use of organic nitrogen compounds bearing at least two positively charged nitrogen atoms. Suitable crosslinking agents include the salts of aliphatic and aromatic diamines and bis (quaternary ammonium) compounds. The crosslinked copolymers may be used for mobility and permeability control purposes. The crosslinking agents are effective over a wide range of pH conditions to form stable gel structures with the polymers.
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Espenscheid, deceased Wilton F.
Paul James M.
Gilman Michael G.
Griffin Ronald W.
Keen Malcolm D.
McKillop Alexander J.
Mobil Oil Corporation
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