FIELD: well drilling. SUBSTANCE: method for placing cement bridging plugs in wells includes forced removal of drilling mud from zone of placing cement bridging plug by swabbing with simultaneous cleaning of well walls from mud cake and injection of grouting mortar into formed zone of drilling mud separation. Well is swabbed by self-sealing collar which is fastened to circular piston in the lower part of bailer by means of releasable connection. EFFECT: higher strength and sealing of installed bridging plugs in oil and gas wells. 2 cl, 2 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| DEVICE TO INSTALL BRIDGES IN WELLS | 2011 |
|
RU2480571C2 |
| SQUEEZE CEMENTING TOOL FOR PLACING CEMENT BRIDGING PLUGS | 0 |
|
SU1803537A1 |
| PLUGGING TOOL FOR SETTING BRIDGES IN BOREHOLES | 0 |
|
SU996718A1 |
| PLUGGING APPARATUS | 0 |
|
SU1133378A1 |
| BAILER FOR INSTALLING SEPARATING BRIDGES IN WELL | 1998 |
|
RU2137898C1 |
| LOWER SEPARATING CEMENTING PLUG | 2011 |
|
RU2472920C1 |
| ARRANGEMENT FOR PLACING SEALING MEMBER IN BOREHOLE | 0 |
|
SU723100A1 |
| BAILER FOR ISOLATING FORMATIONS | 0 |
|
SU968332A1 |
| METHOD OF ISOLATING AN ABSORPTION ZONE IN A CONSTRUCTED WELL AND A DEVICE FOR CARRYING OUT INSULATION | 2020 |
|
RU2736742C1 |
| PLUGGING COMPOSITION FOR SETTING BRIDGES IN WELLS | 0 |
|
SU883340A2 |
