POLYGLYCOL DRILLING FLUID MODIFIER

FIELD: drilling fluids. SUBSTANCE: invention relates to boring oil and gas holes, in particular to additives for drilling fluids used during exposure of oil strata and well completion. Modifier contains 90.0-00.0% polyglycol with molecular weight 100-700 and 0.1-10.0% ethylene oxide/propylene oxide...

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Bibliographische Detailangaben
Hauptverfasser:	GAJFUTDINOV G.SH, ANDRESON B.A, GIBADULLIN N.Z, ASHIKHMIN G.P, SAFIN D.KH, SHARIFULLIN R.R, MAKAROV G.M, GILJAZOV R.M, AKHMETOV R.M, KOSHELEV V.N, VAKHRUSHEV L.P
Format:	Patent
Sprache:	eng ; rus
Schlagworte:	ADHESIVES CHEMISTRY DYES MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS PAINTS POLISHES
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Beschreibung
Zusammenfassung:	FIELD: drilling fluids. SUBSTANCE: invention relates to boring oil and gas holes, in particular to additives for drilling fluids used during exposure of oil strata and well completion. Modifier contains 90.0-00.0% polyglycol with molecular weight 100-700 and 0.1-10.0% ethylene oxide/propylene oxide block copolymer having molecular weight 3000-8000 and content of ethyl oxide blocks. When preparing indicated block copolymer, triethanolamine, triisopropanolamine, tetraisopropanolethylenediamine, and glycerol are used. As above-indicated polyglycol, diethylene glycol and dipropylene glycol production still residues are utilized. EFFECT: imparted required level of inhibiting and surfactant properties and reduced foam formation. 3 cl, 6 tbl