FIELD: oil and gas production. SUBSTANCE: invention, in particular, relates to boring exposure of permafrost under Extreme North and Siberia conditions. Drilling fluid is composed, wt.%: carboxymethylcellulose, 1-5; alkaline caprolactam production effluent, 2-15; sodium chloride, 0-30; and water, 50-97. EFFECT: minimized deleterious effect on permafrost borehole walls and weakened filtration properties. 1 tbl, 1 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| DRILLING FLUID FOR DEVELOPMENT OF EVERFROST SOLIDS (VARIANTS) | 2004 |
|
RU2285030C2 |
| PEAT ALKALINE DRILLING MUD FOR WELL DRILLING IN PERMAFROST ROCKS | 2014 |
|
RU2550704C1 |
| PLUGGING COMPOSITION | 1994 |
|
RU2065923C1 |
| DRILLING FLUID FOR INJECTION AND REPAIR OF WELLS | 2001 |
|
RU2211237C2 |
| REAGENT FOR TREATMENT OF DRILLING FLUIDS ON THE WATER-BASE | 0 |
|
SU1752752A1 |
| REAGENT FOR TREATING DRILLING MUD | 0 |
|
SU1677054A1 |
| 0 |
|
SU1669969A1 | |
| 0 |
|
SU1669965A1 | |
| FROTH-FORMING COMPOSITION | 1993 |
|
RU2061859C1 |
| MUD FLUID FOR USE IN PERMAFROST ROCKS | 2013 |
|
RU2526087C1 |
