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2 030 559

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C1

(51)

IPC

(21) (22)

Application

5043204/03, 1992-05-22

(22)

Actual filing date

1992-05-22

(45)

Published

1995-03-10

(72)

Inventor

Sharipov A.U.Dolganskaja S.I.

(73)

Holder

Zapadno-Sibirskij Nauchno-Issledovatel'Skij I Proektno-Konstruktorskij Institut Tekhnologii Glubokogo Razvedochnogo Burenija

DISPLACEMENT FLUID Russian patent published in 1995 - IPC

Abstract RU 2030559 C1

FIELD: drilling and lining of oil and gas wells. SUBSTANCE: displacement fluid contains cement, polymer reagent and water. Polymer reagent is used in form of deman-product of reaction of polymethyl methacrylate with monoethanolamine in aqueous medium. Initial components are contained in the following amounts, mas.part.: cement 66.6; water 33.4; deman 0.4-1.5. EFFECT: higher quality of cementing due to increased adhesion of cake formed on well walls. 2 tbl

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RU 2 030 559 C1

Authors

Sharipov A.U.

Dolganskaja S.I.

Dates

1995-03-10—Published

1992-05-22—Filed

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