FIELD: oil and gas industry.
SUBSTANCE: invention relates to oil and gas industry, namely to solid phase flocculants providing removal of finely dispersed solid phase in non-aqueous drilling fluids, including under full recycling conditions. The flocculant is an inverse emulsion, in which 60-62 wt.% isoparaffin oil is used as a dispersion medium, 2.5-3.5 wt.% Polyoilchek Stab-KD is used as an emulsifier, and water is used as a dispersion phase, 20 wt.% 25% solution of VPK-402 and 6 wt.% CaCl2.
EFFECT: increase in the volume of drilling fluid returned to the drilling cycle due to effective cleaning of the used drilling fluid, reduction in the volume of drilling waste to be disposed of.
1 cl, 2 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| WEIGHTED DRILLING MUD ON HYDROCARBON BASE | 2019 |
|
RU2733622C1 |
| METHOD OF BREAKING STABLE CONCENTRATED OIL-CONTAINING EMULSIONS (OPTIONS) | 2002 |
|
RU2206367C1 |
| PROCEDURE FOR STRENGTHENING UNSTABLE ROCK DURING DRILLING MAINLY INCLINED AND HORIZONTAL HOLES | 2010 |
|
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| METHOD OF DECOMPOSING AND RECYCLING SPENT INVERT EMULSION DRILLING MUD | 2008 |
|
RU2386657C1 |
| WEIGHTED INVERT-EMULSION DRILLING MUD | 2017 |
|
RU2655035C1 |
| CATIONIC DRILLING MUD | 2015 |
|
RU2614838C1 |
| DRILLING FLUID AND A METHOD FOR PREPARATION THEREOF | 2002 |
|
RU2231534C2 |
| CATIONIC DRILLING MUD | 2015 |
|
RU2614837C1 |
| INVERT-EMULSION DRILLING MUD | 2019 |
|
RU2733590C1 |
| WATER-BASE DRILLING MUD | 0 |
|
SU1758065A1 |
