FIELD: oil and gas industry.
SUBSTANCE: invention relates to oil industry and can be used for repair and insulation work in wells, as well as in underground pipelines. Method includes pipes inspection with detection of the leak interval, installation of a sealing device arranged on the surface with the possibility of overlapping leakage of pipes of the sealing device, descent and placement of the sealing device in the interval of leakage with subsequent sealing of pipes leakage. As an encapsulating device, an inner insert is used in the form of a steel pipe which is designed to freely flow inside the pipes and to block leakage, on the outer surface of the ends of which in the circumferences, at a distance exceeding the size of leakage, fixed charges with igniting devices connected to a source of current on the surface. Sealing of pipes leakage is carried out by initiating burning of thermal charges and fixing the inner insert on the inner surface of a non-hermetic pipe section by annular thermite welding.
EFFECT: increased exploitational reliability, maintained repairability.
1 cl, 1 dwg
Title | Year | Author | Number |
---|---|---|---|
METHOD FOR ELIMINATION OF LEAKAGE IN TUBING STRING | 2012 |
|
RU2498044C1 |
METHOD FOR REPAIRING CASING PIPES IN WELLS AND DEVICE FOR ITS IMPLEMENTATION | 2021 |
|
RU2752837C1 |
PROCEDURE FOR REPAIR OPERATIONS IN WELL | 2009 |
|
RU2423599C2 |
PIPE LEAK ISOLATION DEVICE | 2022 |
|
RU2796067C1 |
METHOD OF PHYSICAL ABANDONMENT OF WELLS | 2014 |
|
RU2576422C1 |
METHOD OF GAS AND GAS CONDENSATE WELLS CASING STRING LEAKAGE SEALING | 2008 |
|
RU2382170C1 |
PROCEDURE FOR RECOVERY OF TIGHTNESS IN FLOW STRINGS | 2012 |
|
RU2533470C2 |
METHOD OF OVERRIDING BLOWING DEEP-SEA OIL-AND-GAS WELL AND DEVICE TO THIS END | 2010 |
|
RU2441134C1 |
METHOD OF SEALING CASING PIPES AT SCREWED JOINTS AND AT THROUGH DAMAGES | 2012 |
|
RU2508444C1 |
METHOD FOR EXPRESS-REPAIRS TO RESTORE PRESSURIZATION OF GAS-WATER-OIL SHOWING WELLS | 2005 |
|
RU2287663C2 |
Authors
Dates
2018-06-29—Published
2017-05-22—Filed