FIELD: oil and gas production industry. SUBSTANCE: this relates to packing devices for workover of wells and it improves operational reliability. Device has body which carries two packing units, and located between them is valving unit. Each of packing units is made in the form of body, hollow cylinder and bush with sealing member, radial passage and protrusion. Hollow cylinder forms annular passage with body. Bush is seated in annular passage and forms circular space in combination with its protrusion and protrusion of body. Aforesaid space is connected with well through radial passage of bush. EFFECT: high efficiency. 6 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| PACKER | 1991 |
|
RU2010947C1 |
| PACKER | 0 |
|
SU1788209A1 |
| DEVICE FOR ISOLATION OF STRATA IN BOREHOLE | 1993 |
|
RU2071545C1 |
| BRIDGE PLUG | 1992 |
|
RU2068942C1 |
| DEVICE FOR SUSPENDING AND SEALING OF HIDDEN CASING STRINGS | 1993 |
|
RU2093667C1 |
| DEVICE FOR ISOLATING SEAMS IN A WELL | 1994 |
|
RU2074306C1 |
| EQUIPMENT FOR WELL COMPLETION AND OPERATION | 2002 |
|
RU2194148C1 |
| DEVICE FOR INSULATING BEDS IN A WELL | 1993 |
|
RU2038460C1 |
| DOWNHOLE INJECTION UNIT | 0 |
|
SU1714080A1 |
| BRIDGE PLUG | 1994 |
|
RU2045657C1 |
