Hydrochloric Acid → HCID 86739559, compound

HRID 1462838Notes

Reaction equation

HRID 1462838 reaction equation
[C:1]([NH2:5])(=[O:4])[CH:2]=[CH2:3].C=O.[NH2:8][C:9]([NH2:11])=[O:10].Cl>>[CH2:1]=[O:4].[NH2:8][C:9]([NH2:11])=[O:10].[C:1]([NH2:5])(=[O:4])[CH:2]=[CH2:3]

Participants

5

Reactant 4

HCID 313Hydrochloric AcidHCID 712FormaldehydeHCID 1176UreaHCID 6579Acrylamide2×

Product 1

HCID 86739559HCID 86739559, compound

Procedure

100 barrels of urea-formaldehyde-acrylamide polymer slug are prepared by combining 50 barrels of 0.5% acrylamide polymer with 50 barrels of 37% formaldehyde solution at ambient temperature. The acrylamide polymer contains 60% unhydrolyzed acrylamide groups and 40% hydrolyzed acrylamide groups. 3805 kilograms of solid urea is added to the above solution and dissolved by passing the mixture through a series of in-line mixers. The pH of the resulting solution is maintained at 4.0 with the addition of hydrochloric acid. The entire volume of the slug is immediately injected into a hydrocarbon-bearing formation via a well in the same manner and under the same conditions as Example 7. After two days the injected fluid precipitates to form a partial plug of the highly permeable zones.

Workup

  1. customat ambient temperature
  2. dissolutiondissolved
  3. customAfter two days the injected fluid precipitates
  4. customto form a partial plug of the highly permeable zones

Sources & evidence

ORD record
ord-bd074b32579c47dc8d4b2871f0c16dd7
Source dataset
uspto-grants-1984_07
Patent number
US04461351

Reaction notes

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