FIELD: oil and gas industry.
SUBSTANCE: group of inventions relates to the oil and gas industry. Downhole expansion tube is designed to be expanded in a well from the first outer diameter to a second outer diameter, to abut the inner surface of the casing or wellbore, wherein the expansion tube extends longitudinally, is made of metal and is manufactured by machining from a single metal tubular blank with at least one circular protrusion on the downhole expansion tube.
EFFECT: improved quality and strength of the expansion tube and the reliability of the seal.
20 cl, 12 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| ANNULAR BARRIER HAVING WELL EXPANSION TUBULAR ELEMENT | 2016 |
|
RU2719855C2 |
| WELL EXPANDING PIPE | 2014 |
|
RU2639344C2 |
| WELL EXPANDING METAL TUBULAR ELEMENT | 2016 |
|
RU2725060C2 |
| ANNULAR BARRIER FOR SMALL-DIAMETER WELLS | 2018 |
|
RU2765939C2 |
| DOWNHOLE EXPANDABLE METAL PIPE | 2015 |
|
RU2697089C2 |
| ANNULAR BARRIER WITH EXTERNAL SEAL | 2012 |
|
RU2590664C2 |
| ANNULAR BARRIER WITH EXPANSION MODULE | 2016 |
|
RU2734470C1 |
| DOWNHOLE METHOD FOR PROVIDING ZONED ISOLATION IN GIVEN POSITION IN ANNULUS AND DOWNHOLE SYSTEM FOR IMPLEMENTING METHOD | 2020 |
|
RU2802509C2 |
| WELL COMPLETION SYSTEM PROVIDING TIGHTNESS RELATIVE TO COATING LAYER | 2016 |
|
RU2726710C2 |
| METHOD FOR REMOVING PART OF DOWNHOLE TUBULAR METAL STRUCTURE AND SYSTEM FOR IMPLEMENTING THE METHOD | 2020 |
|
RU2805050C2 |
