FIELD: process engineering.
SUBSTANCE: invention relates to production of pipes for extraction of gas and gas condensate in sulphur-bearing media. ESR process is used to smelt hollow 470×110×2700 or 430×105x×2700 mm ingots to be bored and turned to hollow 460×100×2700 and 420×95×2700 mm ingots-billets, respectively. Said ingots-billets are heated to ductility temperature and rolled at Pilger mill on taper mandrels to rerolled hot-rolled pipes. The latter are turned, bored and rolled at mill CPR to commercial oil-well tubing sized to 88.9×6.45×9000-10700 mm. Use of hollow ESR ingots allows reducing the metal input.
EFFECT: higher quality of pipes.
4 cl, 1 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| PRODUCTION OF SEAMLESS COLD-FORMED OIL-WELL TUBING SIZED TO 114,3×6, 8×9000-10700 mm FROM CORROSION-RESISTANT ALLOY OF "ХН30МДБ-Ш" GRADE | 2012 |
|
RU2523398C1 |
| METHOD OF PRODUCING COLD-DEFORMED PIPES OF 88,9x6,45x9000-10700 mm SIZE FROM CORROSION-RESISTANT ALLOY OF "ХН30МДБ" GRADE | 2016 |
|
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|
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|
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| METHOD OF PRODUCING SEAMLESS COLD-DEFORMED COUPLING PIPES OF 88,9 × 6,45 mm SIZE FROM CORROSION-RESISTANT ALLOY OF "ХН30МДБ-Ш" GRADE | 2017 |
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RU2613807C1 |
| METHOD OF PRODUCING COLD-DEFORMED COUPLING PIPES OF 114,3x6,88 mm SIZE FROM CORROSION-RESISTANT ALLOY OF "ХН30МДБ" GRADE | 2016 |
|
RU2615925C1 |
