FIELD: welding.
SUBSTANCE: invention relates to a method for connecting casing pipes by laser welding during drilling and well casing. The laser welding of medium-carbon metal pipes is carried out. Before welding, the joint of the pipes to be joined is preheated. Welding is carried out in an environment of independently supplied antioxidant and spark-extinguishing gases with automatic supply of alloyed wire to the joint of the pipes being connected. During welding, the specified temperature is maintained in the working area of the pipe connection using a refrigerant circulation system.
EFFECT: ensuring the possibility of simultaneous drilling of a well and the organization of a casing string, increasing the strength characteristics and durability of the casing string, reducing the material consumption of drilling complexes as a whole, and increasing the safety of work.
5 cl, 3 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD FOR FORMING A MONOLITHIC DRILL STRING FROM CASING PIPES BY ORBITAL LASER WELDING | 2021 |
|
RU2776125C1 |
| METHOD FOR CONNECTION AND DISCONNECTION OF PIPE BY LASER BEAM WELDING | 2020 |
|
RU2752905C1 |
| 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 MOUNTING MONOLITHIC COLUMN OF STEEL PIPES BY ORBITAL LASER WELDING AND DEVICE FOR IMPLEMENTATION THEREOF | 2023 |
|
RU2824906C2 |
| METHOD OF WELL DRILLING | 1998 |
|
RU2147664C1 |
| CASING PIPES CONNECTION ASSEMBLY | 2014 |
|
RU2655137C1 |
| METHOD FOR ORBITAL LASER WELDING OF OIL STEEL PIPES, DEVICE AND SYSTEM IMPLEMENTING IT | 2020 |
|
RU2759457C1 |
| CASING STRING DRILLING DEVICE | 2022 |
|
RU2792480C1 |
| METHOD AND DEVICE FOR LOWERING AND CEMENTING CASING STRINGS | 2021 |
|
RU2765934C1 |
| DRILL BIT WITH CASING PIPE OR CASING-SHANK AND ITS MANUFACTURING | 2017 |
|
RU2719868C2 |
