FIELD: oil and gas industry, particularly to repair damaged casing pipes in wells.
SUBSTANCE: method involves determining damaged casing pipe interval; lowering and pressing-out outer longitudinally corrugated patch to depth below damaged interval; lowering inner longitudinally corrugated patch and pressing-out thereof so that inner patch overlaps outer one; lowering additional shifting pipe in well; fixing thereof by resting pipe end onto upper ends of doubled patch and cementing thereof.
EFFECT: increased efficiency, reduced time of repair work performing and reduced material consumption.
3 cl, 1 ex
| Title | Year | Author | Number |
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| WELL EFFICIENCY RECOVERY AND START UP OF STAND BY WELLS WITH COMPLICATED DESIGN COLLECTORS IN ALFP CONDITIONS AND PRODUCTION STRING BOTTOM PART COLLAPSE | 2008 |
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RU2379498C1 |
