FIELD: drilling.
SUBSTANCE: method includes dissolving the slime-lignin in alkali and its further treatment with a chemical composition which allows the well-drilling reagent to be resistant against temperature up to 80oC and calcium attack up to 7.5 g/l. The alkaline slime-lignin is treated with carbamide and is heated up to 35-45oC during 1.5-2 hours. The concentrations of alkaline and carbamide are from 0.28 to 0.35 and from 0.38 to 0.625 fractions by mass, respectively, to one fraction by mass of the slam-lignin.
EFFECT: heightened quality of drilling-in.
4 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD FOR DEVELOPMENT OF OIL DEPOSIT BY FLOODING | 1996 |
|
RU2127358C1 |
| METHOD FOR PREPARING REAGENT FOR CLAY-FREE MINERALIZED DRILLING FLUID BASED ON CELLULOSE CARBOXYLATE | 0 |
|
SU1666507A1 |
| DRILLING MUD AND A METHOD FOR PREPARATION THEREOF | 2003 |
|
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| METHOD OF REAGENT MAKING FOR MINERALIZED DRILLING FLUID | 0 |
|
SU1799896A1 |
| METHOD OF PRODUCTION OF A SALINE CONCENTRATION | 2002 |
|
RU2227122C2 |
| REAGENT FOR TREATING HIGHLY MINERALIZED MUD | 1994 |
|
RU2084487C1 |
| REAGENT FOR TREATING HIGH-MINERALIZED DRILLING MUD | 2001 |
|
RU2213122C2 |
| GAS WELL PAYOUT BED KILLING METHOD | 2007 |
|
RU2348799C1 |
| METHOD FOR STIMULATING BOTTOMHOLE ZONE OF PRODUCTIVE FORMATION | 2002 |
|
RU2261987C2 |
| CLAY-FREE DRILLING FLUID FOR COMPLETION OF FORMATIONS OF CONTROLLED DIRECTIONAL AND HORIZONTAL WELLS IN CONDITIONS OF ABNORMALLY HIGH FORMATION PRESSURES | 2010 |
|
RU2440397C1 |
