DRILLING MUD Russian patent published in 2005 - IPC

Abstract RU 2243984 C1

FIELD: oil and gas production.

SUBSTANCE: water-based drilling mud contains, wt %: hydroxyethylcellulose or carboxymethylcellulose 0.2-0.3, petroleum product as structuring agent 5-30, alkylsulfonate-series surfactant0.02-0.05, powder-like high-dispersed filler 0.9-1, and additionally air or nitrogen 2-29 vol %.

EFFECT: reduced filtration and enabled penetration of drilling mud into highly fractured producing strata.

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RU 2 243 984 C1

Authors

Takhautdinov R.Sh.

Sidorov L.S.

Sidorov Ju.L.

Popov I.V.

Khuzin R.R.

Khasanov Ja.Z.

Dates

2005-01-10—Published

2003-11-17—Filed