US 11,655,685 B2
Downhole welding tools and related methods
Ahmed Al-Mousa, Dhahran (SA); Marius Neacsu, Dhahran (SA); Qadir Looni, Dhahran (SA); and Omar M Alhamid, Dammam (SA)
Assigned to Saudi Arabian Oil Company, Dhahran (SA)
Filed by Saudi Arabian Oil Company, Dhahran (SA)
Filed on Aug. 10, 2020, as Appl. No. 16/989,327.
Prior Publication US 2022/0042390 A1, Feb. 10, 2022
Int. Cl. E21B 29/10 (2006.01); E21B 47/117 (2012.01); E21B 33/12 (2006.01); B23K 37/02 (2006.01); F16B 31/00 (2006.01); F16L 55/1645 (2006.01)
CPC E21B 29/10 (2013.01) [B23K 37/0276 (2013.01); E21B 33/1212 (2013.01); E21B 47/117 (2020.05); F16B 31/00 (2013.01); F16L 55/1645 (2013.01)] 19 Claims
OG exemplary drawing
 
14. A method of repairing a leak in a pipe, the method comprising:
deploying a downhole welding tool to a leak interval that spans an opening in the pipe, the downhole welding tool comprising:
a tool body,
a welding device coupled to the tool body and comprising:
a carrier arm, and
a consumable welding tip secured the carrier arm,
a fastener that is connected to the tool body and to the carrier arm to secure the welding device to the tool body, and
a pivotable actuator coupled to the tool body at a support pin and below the fastener, the pivotable actuator being in contact with the welding device,
wherein the welding device further comprises a shoulder pin that couples the carrier arm to an exterior wall of the tool body;
actuating the downhole welding tool at the pivotable actuator to pivot the welding device from a collapsed configuration in which the welding device is oriented parallel to the tool body and is spaced from an inner surface of the pipe to an extended configuration in which the welding device projects outward from the tool body to the pipe at an acute angle relative to the tool body;
activating the welding device while the welding device is in the extended configuration; and
consuming the welding tip of the welding device while the welding device is in an activated state to form a weld along the opening in the pipe to repair the leak.