US4548272A - Oil recovery process using a polymer gel
A reducing agent is added to an aqueous medium containing a mixture of undried partially hydrolyzed polyacrylamide and an oxidizing agent. The reducing agent and oxidizing agent act as a redox catalyst system to cross link the polymer and form a polymer gel. Gelation time is controlled by maintaining the components of the gel-forming mixture at predetermined concentrations, reaction ratios and pH.
Oil recovery process using a polymer gel . United States Patent 4548272 . Abstract: A reducing agent is added to an aqueous medium containing a mixture of undried partially hydrolyzed polyacrylamide and an oxidizing agent. The reducing agent and oxidizing agent act as a redox catalyst system to cross link the polymer and form a polymer gel.
Oil recovery process using a polyacrylamide gel (Patent
A polymer gel is formulated by adding a cross-linking agent containing a polyvalent metal cation to an aqueous solution of undried partially hydrolyzed polyacrylamide. The resulting gel is dissolved or suspended in an aqueous medium and injected via a well into a subterranean hydrocarbon-bearing formation to improve oil recovery from the formation.
OSTI.GOV Patent: Oil recovery process using a polymer gel. Oil recovery process using a polymer gel. Full Record; Other Related Research
US4706754A - Oil recovery process using a delayed polymer
Oil recovery process using a delayed polymer gel Download PDF Info Publication number US4706754A. US4706754A US06/840,122 US84012286A US4706754A US06/840,122 US84012286A US4706754A
OIL RECOVERY PROCESS USING A DELAYED POLYMER GEL Abstract A process for reducing the permeability of a high permeability region in a subterranean hydrocarbon-bearing formation by preparing an aqueous gelation solution at the surface comprised of a water-soluble polymer, a metal carboxylate crosslinking agent and a carboxylic acid delaying agent.
Production of a polyacrylamide solution used in an oil
A process is described for producing a partially hydrolyzed polyacrylamide having a preselected average molecular weight and molecular weight distribution for use in recovering oil from a subterranean oil-bearing formation, comprising: predetermining the injectivity and mobility properties of a partially hydrolyzed polyacrylamide required to meet the oil displacement demands of an oil-bearing
A polymer gel is formulated by adding a cross-linking agent containing a polyvalent metal cation to an aqueous solution of undried partially hydrolyzed polyacrylamide. The resulting gel is dissolved or suspended in an aqueous medium and injected via a well into a subterranean hydrocarbon-bearing formation to improve oil recovery from the formation.
US4708205A - Brine tolerant polymer for oil recovery
US4708205A US06/813,181 US81318185A US4708205A US 4708205 A US4708205 A US 4708205A US 81318185 A US81318185 A US 81318185A US 4708205 A US4708205 A US 4708205A Authority US United States Prior art keywords solution polymer process branched polymer branched Prior art date 1985-12-24 Legal status (The legal status is an assumption and is not a legal conclusion.
A polymer gel is formulated by adding a cross-linking agent containing a polyvalent metal cation to an aqueous solution of undried partially hydrolyzed polyacrylamide. The resulting gel is dissolved or suspended in an aqueous medium and injected via a well into a subterranean hydrocarbon-bearing formation to improve oil recovery from the formation.
US4708205A - Brine tolerant polymer for oil recovery
US4708205A US06/813,181 US81318185A US4708205A US 4708205 A US4708205 A US 4708205A US 81318185 A US81318185 A US 81318185A US 4708205 A US4708205 A US 4708205A Authority US United States Prior art keywords solution polymer process branched polymer branched Prior art date 1985-12-24 Legal status (The legal status is an assumption and is not a legal conclusion.
A polymer gel is formulated by adding a cross-linking agent containing a polyvalent metal cation to an aqueous solution of undried partially hydrolyzed polyacrylamide. The resulting gel is dissolved or suspended in an aqueous medium and injected via a well into a subterranean hydrocarbon-bearing formation to improve oil recovery from the formation.
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