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2 208 033

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IPC

(21) (22)

Application

2001105228/03, 2001-02-23

(24)

Start date

2001-02-23

(22)

Actual filing date

2001-02-23

(45)

Published

2003-07-10

(72)

Inventor

Maslov Ju.N.Shchavelev N.L.Lushpeeva O.A.Loseva N.T.Provodnikov G.B.Dinichenko I.K.

(73)

Holder

Otkrytoe Aktsionernoe Obshchestvo

SOLID PHASE-FREE DRILLING FLUID Russian patent published in 2003 - IPC

Abstract RU 2208033 C2

FIELD: oil and gas production. SUBSTANCE: environmentally acceptable, low-component, frost-resistant solid phase-free drilling fluid for exposing producing formations, including exposure via horizontal boreholes, contains, wt %: carboxymethylcellulose 0.8-1.2, sodium chloride 5.0-25.0, naturally occurring high-molecular polysaccharide Kem X 0.3- 0.4, and water 73.4-93.9. EFFECT: increased retention and cutting-carrying capacities. 1 tbl, 5 ex

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RU 2 208 033 C2

Authors

Maslov Ju.N.

Shchavelev N.L.

Lushpeeva O.A.

Loseva N.T.

Provodnikov G.B.

Dinichenko I.K.

Dates

2003-07-10—Published

2001-02-23—Filed