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2 074 217

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IPC

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Application

93036499/04, 1993-07-14

(22)

Actual filing date

1993-07-14

(45)

Published

1997-02-27

(72)

Inventor

Olenev L.M.Zapeklaja G.N.Sharafutdinova F.V.Zueva T.A.Sadriev Z.Kh.Galeev A.K.Nikolaev V.F.

(73)

Holder

Tovarishchestvo S Ogranichennoj Otvetstvennost'Ju Issledovatel'Sko-Vnedrencheskoe Predprijatie Firma

METHOD OF PREPARING PARAFFIN DEPOSIT INHIBITOR Russian patent published in 1997 - IPC

Abstract RU 2074217 C1

FIELD: oil field engineering. SUBSTANCE: paraffin deposit inhibitor for oil field equipment is prepared by mixing hydroxyalkylated alkylphenol (alkylphenol-ethylene oxide and propylene oxide addition product) with organic phosphate at weight ratio 20:(2-10) and aromatic solvent (xylene fraction), wherein, as organic phosphate, di(alkylpolyoxyethylene) phosphate is used with general formula [CnH2n+1(C2H4O)m]2POOM where n = 8-10, m = 6. In this process, 1-3 wt parts of ethylene oxide and 6-12 wt parts of propylene oxide per 1 wt part of alkylphenol are used, and mixing is carried out at 30-130 C for 3-5 h. EFFECT: enhanced efficiency of inhibitor. 2 cl, 3 tbl

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RU 2 074 217 C1

Authors

Olenev L.M.

Zapeklaja G.N.

Sharafutdinova F.V.

Zueva T.A.

Sadriev Z.Kh.

Galeev A.K.

Nikolaev V.F.

Dates

1997-02-27—Published

1993-07-14—Filed

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