Patent ID: 11885203
Assignee: HALLIBURTON ENERGY SERVICES, INC.
Field: Civil engineering (Other fields)
Classification: CPC E | IPC E

Claim 7:
8. The controllable downhole scraper of claim 7, wherein:
the gas reservoir is controllable to open upon receiving the control signal and thereby to receive a first portion of the first fluid from the fluid reservoir, and
the pressure reservoir comprises a chamber defined between the sleeve and the tubular, the chamber fluidly coupled to the first portion of the fluid reservoir, the chamber configured to receive a part of a second portion of the first fluid from the fluid reservoir, the chamber being adjustable between an expanded state and a collapsed state, the collapsed state corresponding to a reduction of pressure in the chamber caused by a burst of the gas reservoir, the expanded state corresponding to a restoration of pressure in the chamber caused by a part of the second part of the first fluid received in the chamber, the collapsed state further corresponding to the extended position of the scraper blade, and the expanded state further corresponding to the retracted position of the scraper blade.