FIELD: oil and gas industry.
SUBSTANCE: modification of piston separator design, as a result of which the possibility of load increase at a logging cable is excluded as an elastic collar is separated, unconditional drainage of a sludge pump is carried out in the zone of bridge installation, and separation of a self-sealing collar is provided regardless of the casing string wall condition in the zone of bridge installation. The piston separator of the device is equipped with a pusher weight and a stop installed as capable of interaction in the lower position of the piston separator with a spacer bushing of a ball lock made in a hollow stem, balls of which are placed in a bore of a sliding bushing, which fixes the self-sealing collar.
EFFECT: using the proposed device makes it possible to considerably simplify technology of installation of cement bridges and to increase safety of works.
3 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD FOR PLACING CEMENT BRIDGING PLUGS IN WELLS AND DEVICE FOR ITS REALIZATION | 1991 |
|
RU2049908C1 |
| PLUGGING TOOL FOR SETTING BRIDGES IN BOREHOLES | 0 |
|
SU996718A1 |
| SQUEEZE CEMENTING TOOL FOR PLACING CEMENT BRIDGING PLUGS | 0 |
|
SU1803537A1 |
| PLUGGING APPARATUS | 0 |
|
SU1133378A1 |
| BAILER FOR INSTALLING SEPARATING BRIDGES IN WELL | 1998 |
|
RU2137898C1 |
| PLUGGING COMPOSITION FOR SETTING BRIDGES IN WELLS | 0 |
|
SU883340A2 |
| PLUGGING BAILER | 2001 |
|
RU2196872C1 |
| ARRANGEMENT FOR PLACING SEALING MEMBER IN BOREHOLE | 0 |
|
SU723100A1 |
| ELECTROMECHANICAL BAILER FOR WELL SEPARATING BRIDGE INSTALLATION (VERSIONS) | 2008 |
|
RU2382871C1 |
| BAILER FOR ISOLATING FORMATIONS | 0 |
|
SU968332A1 |
