FIELD: oil, gas and coke-chemical industries.
SUBSTANCE: invention relates to oil and gas industry, namely, to production of chemical agents for treatment of drilling mud. Method of producing a lignosulphonate reagent for treating a drilling mud, comprising heating while stirring lignosulphonate, formalin, condensation of lignosulphonate with formalin followed by neutralization of the mixture with a caustic soda, characterized in that preliminarily lignosulphonate is mixed with etidronic acid in amount of 10 % of the weight of lignosulphonate in terms of the monohydrate, mixture is stirred, heated to 60-70 °C, adding 3 % formalin in amount of 2.4 % of weight of lignosulphonate in terms of anhydrous formaldehyde.
EFFECT: technical result is intensified effect of lignosulphonate reagent on filtration and structural-mechanical properties of clay solutions.
1 cl, 3 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD FOR OBTAINING REAGENT FOR DRILLING FLUID | 2010 |
|
RU2443747C1 |
| METHOD OF PRODUCING LIGNOSULFONATE REAGENT FOR DRILLING FLUID TREATMENT | 1995 |
|
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| METHOD OF PREPARING REAGENT FOR TREATMENT OF DRILLING MUDS | 1998 |
|
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| METHOD FOR OBTAINING A MODIFIED LIGNOSULFONATE REAGENT FOR THE TREATMENT OF DRILLING MUD | 2020 |
|
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| METHOD OF PRODUCING DRILLING REAGENT FOR CLAY SOLUTIONS | 2018 |
|
RU2708428C1 |
