FIELD: oil producing industry; devices for segregation of formations. SUBSTANCE: device has a body consisting of two concentric pipes forming a circular channel with a packer unit installed on its ends. At least one of packer units has flexible sealing members. At least one packer unit is used in the form of a filtering hose provided with split rings. Reinforcing members are located inside the filtering hose. Packer units are installed on the device body with possible change of a distance between them. EFFECT: improved sealing of annular space in wells with complicated wellbores. 3 cl, 2 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF HORIZONTAL WELL COMPLETION | 2000 |
|
RU2171359C1 |
| METHOD OF LOST CIRCULATION CONTROL IN WELL REPAIR AND ISOLATION OPERATIONS (VERSIONS) | 1999 |
|
RU2155858C1 |
| EQUAL-PASSAGE MULTIPLE STAGE CEMENTER | 2001 |
|
RU2203390C2 |
| SLEEVE FOR STEP-BY-STEP CEMENTATION OF CASING STRINGS | 1996 |
|
RU2129207C1 |
| METHOD FOR SELECTIVE ISOLATION OF PRODUCTIVE RESERVOIR AT CEMENTATION OF PRODUCTION STRING | 1993 |
|
RU2087674C1 |
| PACKER | 1999 |
|
RU2162930C2 |
| GEAR FOR SELECTIVE INSULATION OF POOLS AND MECHANISM CONNECTING MODULES OF THIS GEAR | 2000 |
|
RU2184210C2 |
| DEVICE FOR CEMENTATION OF CASING STRINGS IN WELLS | 1995 |
|
RU2104389C1 |
| METHOD OF FORMATION ISOLATION | 2001 |
|
RU2187622C1 |
| METHOD FOR MULTI-STAGE CUFF CEMENTING OF WELLS | 2020 |
|
RU2741882C1 |
