Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – At least one aryl ring which is part of a fused or bridged...
Patent
1992-04-24
1993-12-14
Henderson, Christopher
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
At least one aryl ring which is part of a fused or bridged...
526240, 526258, 526263, C08K 300, C08F22600
Patent
active
052703827
ABSTRACT:
Polymer compositions and their applications in hostile environments for oil field operations are disclosed. The compositions contains a polymer which is copolymerized by (a) an ampholytic monomer having the formula of: ##STR1## where one and only one of the substituted groups R.sub.1, R.sub.2, R.sub.3 and R.sub.4 must be a vinyl group, the rest can be the same or different and can be hydrogen or a C.sub.1 -C.sub.3 alkyl group; R.sub.5 is a phenyl group; n is .gtoreq.1 and .ltoreq.6; and q is 0 or 1; (b) at least one comonomer having an ethylenic linkage. The compositions further contain crosslinking agents, such as phenol and formaldehyde, for reducing permeability in a high temperature subterranean formation; and water for use in well treating fluids.
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Ahmed Iqbal
Hsieh Henry L.
Moradi-Araghi Ahmad
Patel Bharat
Henderson Christopher
Phillips Petroleum Company
Shay Lucas K.
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