FIELD: oil and gas production.
SUBSTANCE: invention relates to compositions of plugging materials used to cement casing strings under longstanding frozen rock conditions. Raw mix containing plugging Portland cement (32.05-41.32%), hollow glass microspheres (1.65-5.98%), and water further contains 5.95-14.9% of dressed hollow glass microspheres.
EFFECT: enhanced crack growth resistance of plugging material and achieved efficient sealing of hole annuity and annular space during fortification of oil-gas wells while simultaneously protecting permafrost rocks against thaw during perforation and running of wells.
2 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| RAW MIXTURE ADAPTED TO OBTAIN HEAT-PROTECTIVE PLUGGING MATERIAL USED IN PERMAFROST ROCK ENVIRONMENT | 2003 |
|
RU2267004C2 |
| RAW MIXTURE FOR OBTAINING LIGHT-WEIGHT GROUTING MORTAR | 2011 |
|
RU2472835C1 |
| RAW MATERIAL MIXTURE FOR PRODUCTION OF FOAM CONCRETE | 2012 |
|
RU2507182C1 |
| LOW-DENSITY GROUTING MORTAR | 2012 |
|
RU2507380C1 |
| GYPSUM CEMENT GROUTING SOLUTION | 2023 |
|
RU2802474C1 |
| CEMENTING SLURRY | 2019 |
|
RU2726754C1 |
| GROUTING MORTAR | 2019 |
|
RU2707837C1 |
| METHOD TO PREPARE LIGHTER MASONRY MORTAR AND COMPOSITION FOR LIGHTER MASONRY MORTAR | 2012 |
|
RU2528323C2 |
| GROUTING MORTAR | 0 |
|
SU1640367A1 |
| VISCOELASTIC STRUCTURE FOR ISOLATION OF THE INTERSTRUCTION SPACE OF WELLS | 2016 |
|
RU2620674C1 |
