FIELD: mining.
SUBSTANCE: invention relates to mining industry and is intended for well fixing works. Device consists of lower and upper separation plugs. Lower separating plug consists of a core, on the outer side of which there is a rubber collar. In upper part of core cylindrical bore is made, in which there is a stepped bushing, pressed by nut. In the stepped bushing there is a mounting cone and a groove. Stepped bushing is connected by upper end to drill pipe by shear pins. Upper separating plug consists of connecting rod, collars, which are equipped with embedded and coupling sleeves. Coupling sleeve is provided with collet with blades and O-ring on outer side. Each sleeve is connected by thread with connecting rod. Locking nut is installed on the upper end of the connecting rod.
EFFECT: higher quality of grouting works.
1 cl, 3 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| DEVICE FOR STAGE CEMENTING OF CASING STRINGS | 2015 |
|
RU2584428C1 |
| CEMENTING PLUG | 0 |
|
SU1705548A1 |
| DISCONNECTOR | 0 |
|
SU857438A1 |
| METHOD FOR INSTALLING A ROTATING LINER IN A WELL AND A DEVICE FOR ITS IMPLEMENTATION | 2021 |
|
RU2777240C1 |
| DEVICE FOR STEPWISE CEMENTING OF TAIL PIECE | 2007 |
|
RU2344271C1 |
| METHOD FOR CEMENTING SHANK IN WELL AND DEVICE THEREFOR | 2015 |
|
RU2595122C1 |
| DEVICE FOR CEMENTING CASING STRINGS | 2023 |
|
RU2819027C1 |
| METHOD FOR FIXING A LINER IN A WELL WITH SUBSEQUENT HYDRAULIC FRACTURING AND A DEVICE FOR ITS IMPLEMENTATION | 2021 |
|
RU2773092C1 |
| DEVICE FOR CEMENTING CASING STRING OF LARGE DIAMETER | 2015 |
|
RU2580556C1 |
| DEVICE FOR SETTING SHANK END OF CASING IN WELL | 2009 |
|
RU2415254C1 |
