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Application

98120346/03, 1998-11-10

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Start date

1998-11-10

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Actual filing date

1998-11-10

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Published

2000-06-20

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Inventor

Saunin V.I.Kashkarov N.G.Verkhovskaja N.N.Shtol' V.F.Sorokin V.F.Shchukin S.A.

(73)

Holder

Tjumenskij Nauchno-Issledovatel'Skij I Proektnyj Institut Prirodnogo Gaza I Gazovykh Tekhnologij

WELL-KILLING FLUID Russian patent published in 2000 - IPC

Abstract RU 2151162 C1

FIELD: oil and gas production. SUBSTANCE: invention relates to killing and restoring wells and, more specifically, to aqueous fluids employed for killing wells. Fluid contains, wt %: lignin (filler) 2.0, integrated polymer reagent (product of reaction of hydroxymethyl cellulose with carboxymethyl starch) 2.5-3.0, special-type organosilicon reagent 0.4-0.6, a surfactant 0.5, and, additionally, potassium chloride 5.0. EFFECT: improved filtration properties and minimized effect upon bottom zone permeability. 2 tbl

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RU 2 151 162 C1

Authors

Saunin V.I.

Kashkarov N.G.

Verkhovskaja N.N.

Shtol' V.F.

Sorokin V.F.

Shchukin S.A.

Dates

2000-06-20—Published

1998-11-10—Filed

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