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2 139 770

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IPC

(21) (22)

Application

98103704/02, 1998-02-23

(24)

Start date

1998-02-23

(22)

Actual filing date

1998-02-23

(45)

Published

1999-10-20

(72)

Inventor

Volkomich A.A.Temkina V.Ja.Kuz'Min N.N.Lositskaja T.M.Kovaleva N.E.Vendilo A.G.Degtjarenko G.I.Jurasova Ju.V.Kuznetsova A.V.

(73)

Holder

Zakrytoe Aktsionernoe Obshchestvo

MODIFYING ADDITIVE Russian patent published in 1999 - IPC

Abstract RU 2139770 C1

FIELD: clay materials. SUBSTANCE: invention relates to additives affecting mechano-structural properties of clay materials and can be used for sand blends and drilling muds. Additive contains phosphorus substance, namely purified complexing hexamethylenetetramine methylphosphorylation product containing nitrilotrimethylphosphonic acid (20-40%), methyliminodimethylphosphonic acid (5-15%) and water. EFFECT: increased rupture strength in moisture condensation zone, increased flowability of sand blends and decreased their crumbling, increased yield of drilling muds. 3 tbl

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RU 2 139 770 C1

Authors

Volkomich A.A.

Temkina V.Ja.

Kuz'Min N.N.

Lositskaja T.M.

Kovaleva N.E.

Vendilo A.G.

Degtjarenko G.I.

Jurasova Ju.V.

Kuznetsova A.V.

Dates

1999-10-20—Published

1998-02-23—Filed