FIELD: well drillings. SUBSTANCE: Casing is run in. Time and degree of cement stone shrinkage is determined. After pumping in cement, design force is applied at the casing top. During waiting on cement time, casing is unloaded for time interval equal to difference between cement stone final set at well head and cement stone initial set at bottom hole. In doing so, rate of unloading is determined by rate of cement stone shrinkage over the entire cementing depth. EFFECT: tightness of well annulus improved due to uniformed stress distribution in cement stone. 2 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD FOR CEMENTING THE CASING STRING OF A BOREHOLE | 2021 |
|
RU2778361C1 |
| METHOD OF CEMENTING OF WELLS WITH ABNORMALLY HIGH FORMATION PRESSURE | 1996 |
|
RU2100569C1 |
| METHOD OF CEMENTING CASING PIPE OF GAS WELL UNDER CONDITIONS OF PERMAFROST ROCKS | 2006 |
|
RU2342517C2 |
| METHOD FOR WELL CASING | 1992 |
|
RU2054527C1 |
| METHOD FOR CEMENTING A FIBERGLASS CASING STRING (OPTIONS) | 2022 |
|
RU2777252C1 |
| PROCEDURE FOR WELL STABILISATION | 2010 |
|
RU2434120C1 |
| METHOD OF WELL STAGE CEMENTING UNDER CONDITIONS OF ABNORMALLY LOW FORMATION PRESSURES IN LOST CIRCULATION ZONE | 2000 |
|
RU2188302C2 |
| METHOD OF CEMENTING OF WELLS | 2006 |
|
RU2335618C2 |
| WELL CEMENTING METHOD UNDER CONDITIONS OF ABNORMALLY LOW RESERVOIR PRESSURES | 2021 |
|
RU2775319C1 |
| METHOD OF CEMENTING WELLS | 0 |
|
SU1002526A1 |
