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2 029 776

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IPC

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Application

5003932/03, 1991-10-04

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Actual filing date

1991-10-04

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Published

1995-02-27

(72)

Inventor

Shatov A.A.Sergeev V.N.Voronin A.V.Lysenko S.A.Mavljutov M.R.Jakimtsev V.V.

(73)

Holder

Sterlitamakskoe Proizvodstvennoe Ob"Edinenie

DRILLING MUD FIELD: used for drilling and plugging wells Russian patent published in 1995 - IPC

Abstract RU 2029776 C1

SUBSTANCE: the saline component of the drilling mud is calcined soda production waste which comprises (wt %): 62-72 CaCl2; 27-37 NaCl; 0.6-0.9 CaSO4; 0.1-0.4 Ca(OH)2; the ratio of the drilling mud components being as follows (wt %): 0.1-2.0 carboxymethyl cellulose; 5.0-20.0 calcined soda production waste from the distillation stage; and water the balance. EFFECT: improved properties of the drilling mud; and water, the balance. 2tbl

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RU 2 029 776 C1

Authors

Shatov A.A.

Sergeev V.N.

Voronin A.V.

Lysenko S.A.

Mavljutov M.R.

Jakimtsev V.V.

Dates

1995-02-27—Published

1991-10-04—Filed

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