FIELD: mining.
SUBSTANCE: invention relates to deep drilling, in particular, to the oil gauge oil well tubing repair and restoration. Method for the oil well tubing restoration by laser welding consists in the pipes outer and inner surfaces cleaning of deposits and contaminants, performing flaw detection of pipes, by the results of the inspection cutting off the defective pipe sections, joining the suitable pipe sections together and welding with laser welding. At that, before joining the pipes, the jointing surfaces are cleaned and the edges of the pipes joined ends are sharpened, and the welding is carried out in two passes using a filler wire. Welding is carried out by the laser beam scanning, and also with the use of side air knives.
EFFECT: technical result is an increase in the processability and quality of repair, as well as a significant reduction in the portion of tubing (OWT) being sent to scrap.
26 cl, 3 dwg, 1 tbl
Title | Year | Author | Number |
---|---|---|---|
METHOD FOR ORBITAL LASER WELDING OF OIL STEEL PIPES, DEVICE AND SYSTEM IMPLEMENTING IT | 2020 |
|
RU2759457C1 |
METHOD FOR HYBRID LASER-ARC WELDING OF ANNULAR ROTARY JOINTS OF PIPELINES | 2022 |
|
RU2792346C1 |
METHOD OF HYBRID ARC AUGMENTED LASER WELDING OF PIPE LONGITUDINAL SEAM | 2017 |
|
RU2637035C1 |
METHOD OF DEFECT CORRECTION OF WELDED SEAM OF A FORMED PIPE SHELL MADE WITH THE USE OF LASER | 2017 |
|
RU2668623C1 |
METHOD FOR CONNECTION AND DISCONNECTION OF PIPES FOR BITUMINOUS OIL EXTRACTION AND DEVICE FOR LASER WELDING AND CUTTING WHEN IMPLEMENTING METHOD | 2016 |
|
RU2630327C1 |
METHOD OF DEFECT CORRECTION OF WELDED SEAM OF A FORMED PIPE SHELL MADE WITH THE USE OF LASER | 2017 |
|
RU2668621C1 |
METHOD FOR CONTROLLING THE THERMAL CYCLE OF MULTIPLE-PASS LASER WELDING OF NON-ROTARY ANNULAR CONNECTIONS IN A NARROW-GAP PREPARATION WITH FILLER WIRE | 2020 |
|
RU2754216C1 |
METHOD FOR FORMING A MONOLITHIC DRILL STRING FROM CASING PIPES BY ORBITAL LASER WELDING | 2021 |
|
RU2776125C1 |
METHOD OF REPAIR OF SUCKER RODS | 1989 |
|
SU1725503A1 |
METHOD FOR PREPARING THE EDGE FOR ORBITAL LASER WELDING OF NON-ROTATING BUTT RING JOINTS | 2020 |
|
RU2743131C1 |
Authors
Dates
2018-05-23—Published
2017-02-22—Filed