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2 451 042

(13)

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IPC

C08L97/00(2006-01-01)

C09K8/10(2006-01-01)

C09K8/02(2006-01-01)

(21) (22)

Application

2010139529/05, 2010-09-24

(24)

Start date

2010-09-24

(22)

Actual filing date

2010-09-24

(45)

Published

2012-05-20

(72)

Inventor

Kudasheva Florida KhusainovnaMustafin Akhat Gaziz'JanovichBadikova Al'Bina DarisovnaTeptereva Galina AlekseevnaGimaev Ragib NasretdinovichSharipov Tagir Vil'DanovichKuljashova Irina AmirovnaAsfandijarov Lutfurakhman KhabibrakhmanovichAkchurin Khamzja Iskhakovich

(73)

Holder

Gosudarstvennoe Obrazovatel'Noe Uchrezhdenie Vysshego Professional'Nogo Obrazovanija Gosudarstvennyj Universitet" Vpo

METHOD OF PRODUCING DRILLING FLUID Russian patent published in 2012 - IPC C08L97/00 C09K8/10 C09K8/02

Abstract RU 2451042 C1

FIELD: chemistry.

SUBSTANCE: drilling agent is obtained by treating lignosulphonate with sulphuric acid and alkaline metal bichromate to pH 1-1.5, followed by partial neutralisation with sodium hydroxide to pH 4-5 and drying. During treatment, elementary sulphur is fed into the reaction zone in amount of 0.8-1.2 wt % of the weight of the lignosulphonate.

EFFECT: invention enables to obtain a drilling agent with high quality factors, avoid contamination of waste water with hexavalent chromium compounds.

1 ex, 1 tbl

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RU 2 451 042 C1

Authors

Kudasheva Florida Khusainovna

Mustafin Akhat Gaziz'Janovich

Badikova Al'Bina Darisovna

Teptereva Galina Alekseevna

Gimaev Ragib Nasretdinovich

Sharipov Tagir Vil'Danovich

Kuljashova Irina Amirovna

Asfandijarov Lutfurakhman Khabibrakhmanovich

Akchurin Khamzja Iskhakovich

Dates

2012-05-20—Published

2010-09-24—Filed