FIELD: oil and gas industry, particularly isolation materials adapted to case wells and to isolate formations.
SUBSTANCE: insulation material comprises spent clay drilling mud having predetermined density, polyacrylamide, gel-forming agent, namely liquid glass, and polyethylenepolyamine. The polyethylenepolyamine includes diethylenetriamine, triethylenetetramine and triethylenepentamine. Above components are taken in the following amounts (% by clay drilling mud weight): polyacrylamide - 0.05-1.00, liquid glass - 0.1-1.5 and polyethylenepolyamine - 0.01-0.2.
EFFECT: increased structural properties, increased stability and reduced filtering ability.
1 ex, 1 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| DRILLING MUD | 0 |
|
SU1155608A1 |
| POLYAMINOPOLYAMIDE-EPYCHLORHYDRINE RESINS DESIGNED FOR USE AS HYDRATION INHIBITORS OF CLAY AND CLAY SHALES FOR DRILLING INDUSTRY | 2014 |
|
RU2643054C2 |
| INSULATION MATERIAL-HYDRAULIC SEAL | 2000 |
|
RU2186937C2 |
| COMPOSITION FOR KILLING OF WELL | 2007 |
|
RU2357996C1 |
| METHOD FOR WATER-PERMEABLE RESERVOIR ISOLATION | 2004 |
|
RU2271444C1 |
| METHOD FOR PRODUCING HORIZONTAL AND OBLIQUE GROUND-CLAY ELEMENT BY JETTING | 2022 |
|
RU2804093C1 |
| MIXTURE FOR PRODUCING CONSTRUCTION MATERIAL | 2009 |
|
RU2439018C2 |
| METHOD FOR REPAIR AND INSULATION WORKS IN WELL | 2014 |
|
RU2580534C1 |
| DRILLING MUD AND METHOD FOR PREPARING THE SAME | 0 |
|
SU1035050A1 |
| COMBINATED-ACTION BUFFER FLUID | 0 |
|
SU939728A1 |
