COMPLEX REAGENT FOR PLUGGING LIQUIDS ON THE BASIS OF PORTLAND CEMENT Russian patent published in 1995 - IPC

Abstract SU 1839040 A1

FIELD: strengthening of oil and gas holes. SUBSTANCE: complex reagent has, wt. -% : span piece 8-12; 2-hydroxy-1,3-propylenediaminotetramethylenephosphonic acid tetrasodium salt 4-6; triethanolamine 2-5, and water - the rest. EFFECT: enhanced safety of strengthening at moderate temperatures. 1 tbl

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SU 1 839 040 A1

Authors

Perejma A.A.

Pertseva L.V.

Petrakov Ju.I.

Il'Jaev V.I.

Gusmanov R.A.

Jakovenko N.A.

Dates

1995-04-10—Published

1990-10-01—Filed