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|1. (WO2015047399) FIBER OPTIC SLICKLINE AND TRACTOR SYSTEM|
|Applicants:||SCHLUMBERGER CANADA LIMITED
SERVICES PETROLIERS SCHLUMBERGER
SCHLUMBERGER HOLDINGS LIMITED
SCHLUMBERGER TECHNOLOGY B.V.
PRAD RESEARCH AND DEVELOPMENT LIMITED
SCHLUMBERGER TECHNOLOGY CORPORATION
SHEIRETOV, Todor K.
|Title:||FIBER OPTIC SLICKLINE AND TRACTOR SYSTEM|
A system for delivering a fiber optic slickline through a deviated well with a battery powered tractor. The system includes a tractor having an efficiency rating of at least about 30% so as to adequately serve as a conveyance aid without the requirement of surface supplied power. For example, regulating of drive sections of the tractor may take place through a hydraulic section. Thus, arms of the tractor may be hydraulically locked in an open position without the requirement of continuous power to maintain the arms in an open position. At the same time, however, the hydraulic section may include accumulator capacity so as to allow for temporary responsive collapse of the arms for sake of navigating a restriction in the well.