FIELD: oil and gas production. SUBSTANCE: invention refers to packers sealing hole clearance. Proposed packer has rod, sealing member with cones and shifters. Bushings with spring-loaded internal protrusions are made fast to shifters. Packer includes rests with dies for interaction with conical surfaces. Dies have cones in the form cut cylindrical pipe in their thick parts in small-sized packers and in packers meant for cased wells. EFFECT: increased functional reliability of packer. 2 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| PACKER (VERSIONS) | 2000 |
|
RU2179228C2 |
| PACKER | 1997 |
|
RU2120023C1 |
| PACKER | 1996 |
|
RU2105864C1 |
| OIL WELL DRILLING PACKER | 1992 |
|
RU2039205C1 |
| PACKER | 1992 |
|
RU2044863C1 |
| PACKER | 1996 |
|
RU2101461C1 |
| SET OF SLIDING SUPPORTS FOR PACKER | 2012 |
|
RU2513609C1 |
| HYDROMECHANICAL ANCHOR | 1991 |
|
RU2009309C1 |
| PACKER | 0 |
|
SU883331A1 |
| PACKER | 0 |
|
SU1016484A1 |
