New additives for retarding setting of cement from methylenephos

Details New additives for retarding setting of cement from methylenephos New additives for retarding setting of cement from methylenephos

1983-09-02

1984-09-18

Poer, James

Compositions: coating or plastic

Coating or plastic compositions

Metal-depositing composition or substrate-sensitizing...

106315, C04B 735

Patent

active

044722001

ABSTRACT:
Certain methylenephosphonic acid derivatives of aminohydrocarbylpiperazine-urea adducts have been found to be good cement set-retarding additives.

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Chem. Abstracts: 97, 112352a-"Plugging Composition for Cementing Oil and Gas Wells", Dytyuk, L. T. et al.
Chem. Abstracts: 97, 26178a-"Plugging Fluids for Cementing Deep Petroleum and Gas Wells", Alekseev, P. D., et al.
Chem. Abstracts: 98, 58912p-"Improvement of Casing Cementation in Deep and Ultradeep Wells, Part 2, Deep Well Cements and Additives", Arens, K. H. et al.
SU-640-019, "Plugging Mixture for High-Temperature Oil or Gas Wells-Comprises Portland Cement and 1-Hydroxy Ethylidene-Phosphonic Acid Sodium or Potassium Salt", Khariv I YU.
"Additives Tailor Cement to Individual Wells", P. N. Parker, C. Clement, The Oil and Gas Journal, Mar. 14, 1977, vol. 75.

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