Patent ID: 11939843
Assignee: HALLIBURTON ENERGY SERVICES, INC.
Field: Chemical engineering (Chemistry)
Classification: CPC E  B | IPC B  E

Claim 12:
13. A method for cleaning a wellbore casing, comprising:
lowering a wireline based scraper system into a wellbore casing using a wireline, the wireline based scraper system including:
a hydraulic power pack;
a wellbore scraper assembly hydraulically coupled to the hydraulic power pack, the wellbore scraper assembly comprising:
a tubular housing;
a plurality of hydraulically deployable scraper features associated with the tubular housing, the plurality of hydraulically deployable scraper features in a first retracted state, the plurality of hydraulically deployable scraper features comprising a plurality of linkage arms or a plurality of bow springs; and
a hydraulic deployment system in fluid communication with the hydraulic power pack and coupled to the plurality of hydraulically deployable scraper features, the hydraulic deployment system configured to move the plurality of hydraulically deployable scraper features from the first state to a second radially extended state; and

a wellbore tool coupled proximate a downhole end of the wellbore scraper assembly and hydraulically coupled to the hydraulic power pack;

extending the hydraulically deployable scraper features from the first retracted state to the second radially extended state when the wireline based scraper system reaches a region of the wellbore casing to be cleaned;
moving the wireline based scraper system with the hydraulically deployable scraper features in the second radially extended state uphole and downhole in the region to form a cleaned area of the wellbore casing;
returning the hydraulically deployable scraper features to the first retracted state after forming the cleaned area; and
setting a second wellbore tool in the cleaned area after returning the hydraulically deployable scraper features to the first retracted state.