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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Authors
Dates
1995-04-10—Published
1990-10-01—Filed