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2 213 761

(13)

(51)

IPC

(21) (22)

Application

2001124485/03, 2001-09-03

(24)

Start date

2001-09-03

(22)

Actual filing date

2001-09-03

(45)

Published

2003-10-10

(72)

Inventor

Murzagulov G.G.Andreson B.A.Giljazov R.M.Khajrullin V.F.

(73)

Holder

Dochernee Obshchestvo S Ogranichennoj Otvetstvennost'Ju Nauchno-Issledovatel'Skij Institut Nefti" Otkrytogo Aktsionernogo Obshchestva Neftjanaja Kompanija

EMULSION DRILLING FLUID Russian patent published in 2003 - IPC

Abstract RU 2213761 C2

FIELD: oil and gas production. SUBSTANCE: invention provides drilling fluid for boring under complicated mining and geological conditions and for quality exposing of productive reservoirs containing, wt %: hydrocarbon phase 10-20, calcium carbonate 5-30, starch as stabilizer 3-4, magnesium chloride 5-10, potassium chloride 3-5, alldestination surfactant PKD-515 (additionally) 3-4, and mineralized water - the balance. EFFECT: prevented clay rock swelling and increased permeability restoration factor for productive reservoirs. 2 tbl

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RU 2 213 761 C2

Authors

Murzagulov G.G.

Andreson B.A.

Giljazov R.M.

Khajrullin V.F.

Dates

2003-10-10—Published

2001-09-03—Filed