METHOD FOR REMOVING PART OF DOWNHOLE TUBULAR METAL STRUCTURE AND SYSTEM FOR IMPLEMENTING THE METHOD Russian patent published in 2023 - IPC E21B29/00 

Abstract RU 2805050 C2

FIELD: oil and gas industry.

SUBSTANCE: removal of tubular metal structures in a wellbore. The method comprises inserting a downhole wireline tool having an anchor section and a machining device into the first downhole tubular metal structure, placing the tool opposite the first section of the first tubular structure so that the machining device is located at a distance of 8-12 meters from the first end of the first tubular structure, and the anchor section is placed above the machining device, anchoring the tool opposite the first section, separating the first section, having a length of 8-12 meters, from the second section of the first tubular structure by machining the first tubular structure, removing the first section from the well by pulling the cable together with a tool having a first section 8-12 meters long to create a new first end of the first tubular structure in the well, re-inserting the tool into the first tubular structure, placing the tool against the new first section of the first downhole tubular metal structure so that the machining device is placed at a distance of 8-12 meters from the new first end of the first downhole tubular metal structure, and the anchor section is placed above the machining device, anchoring the tool opposite the new first section, separating the new first section, having a length of 8-12 meters, from the rest of the first tubular construction and extraction of a new first section from the well by pulling the cable along with a tool having a new first section 8-12 meters long.

EFFECT: optimization of the well with the possibility of its further operation.

15 cl, 16 dwg

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RU 2 805 050 C2

Authors

Kruger Christian

Dates

2023-10-11Published

2020-01-07Filed