US 12,496,627 B2
Method, system and signal generator for treating a device to resist formation and build-up of scale deposits
Keith Coutts, Westhill (GB); Graeme Dorrance, Stonehaven (GB); Martin Clark, Lymington (GB); Rahil Joshi, Aberdeen (GB); and Stuart Ferguson, Kingswells (GB)
Assigned to Clearwell Energy Holdings Limited, Aberdeen (GB)
Appl. No. 18/247,792
Filed by Clearwell Energy Holdings Limited, Aberdeen (GB)
PCT Filed Dec. 14, 2021, PCT No. PCT/EP2021/085783
§ 371(c)(1), (2) Date Apr. 4, 2023,
PCT Pub. No. WO2022/129106, PCT Pub. Date Jun. 23, 2022.
Claims priority of application No. 2019833 (GB), filed on Dec. 15, 2020.
Prior Publication US 2023/0330721 A1, Oct. 19, 2023
Int. Cl. B08B 17/02 (2006.01); B08B 7/00 (2006.01); E21B 37/00 (2006.01)
CPC B08B 17/02 (2013.01) [B08B 7/0035 (2013.01); E21B 37/00 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A method for treating an electric submersible pump (ESP) to resist formation and build-up of scale deposits at the ESP, the ESP being located in a fluid-containing conduit, the method comprising:
introducing a variable, pulsed radio frequency (RF) signal into a primary coil of a transformer;
transferring the RF signal to a power line connected to the ESP located in a fluid-containing conduit via a first terminal of a secondary coil of the transformer connected to the power line, a second terminal of the secondary coil being operably grounded, and the power line being for providing power to the ESP; and
propagating the RF signal and an associated electromagnetic field along a signal path defined by the power line to the ESP and throughout the ESP to resist formation and/or build-up of scale deposits at the ESP.