FIELD: oil and gas industry.
SUBSTANCE: downhole tool includes a tubular body, a swelling element located around tubular body, and at least one O-ring located around tubular body between tubular body and swelling element, and is harder than the swelling element.
EFFECT: prevention of undesired leakage of downhole fluid medium and improvement of retaining and sealing abilities of downhole tool.
20 cl, 4 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| DEVICE TO BE USED WITH DOWNHOLE TOOL HAVING SWELLING ELEMENT; DOWNHOLE TOOL AND ITS ASSEMBLY METHOD | 2011 |
|
RU2485282C2 |
| ANCHORS OF SWELLING PACKERS | 2011 |
|
RU2477365C1 |
| MULTI-ZONE COMPLETION WITH FORMATION HYDRAULIC FRACTURING | 2012 |
|
RU2601641C2 |
| SEALING SYSTEM AND SEALING METHOD TO BE USED IN WELL BORE (VARIANTS) | 2005 |
|
RU2302512C2 |
| SELF-SEALING PACKER | 2007 |
|
RU2392417C2 |
| EQUIPMENT AND OPERATIONS OF MOVABLE INTERFACE UNIT | 2014 |
|
RU2645044C1 |
| METHODS AND ASSEMBLY FOR ISOLATION OF ZONES IN WELL BOREHOLE | 2012 |
|
RU2535320C2 |
| DEFLECTOR ASSEMBLY WITH A WINDOW FOR A MULTILATERAL BOREHOLE, MULTILATERAL BOREHOLE SYSTEM AND METHOD FOR FORMING A MULTILATERAL BOREHOLE SYSTEM | 2019 |
|
RU2776020C1 |
| MULTIPLE TIMES INSTALLED PRE-INSTALLED MECHANISM FOR WELL TOOLS | 2015 |
|
RU2679197C1 |
| DRIVEN DOWNHOLE TOOLS FOR ATTACHMENT TO TUBULAR STRINGS | 2017 |
|
RU2735172C2 |
