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1. (WO2015047399) FIBER OPTIC SLICKLINE AND TRACTOR SYSTEM

Pub. No.:    WO/2015/047399    International Application No.:    PCT/US2013/062643
Publication Date: Fri Apr 03 01:59:59 CEST 2015 International Filing Date: Tue Oct 01 01:59:59 CEST 2013
IPC: E21B 23/14
E21B 47/12
Applicants: SCHLUMBERGER CANADA LIMITED
SERVICES PETROLIERS SCHLUMBERGER
SCHLUMBERGER HOLDINGS LIMITED
SCHLUMBERGER TECHNOLOGY B.V.
PRAD RESEARCH AND DEVELOPMENT LIMITED
SCHLUMBERGER TECHNOLOGY CORPORATION
Inventors: FOUCHER, Pierre-arnaud
BILLINGHAM, Matthew
SHEIRETOV, Todor K.
Title: FIBER OPTIC SLICKLINE AND TRACTOR SYSTEM
Abstract:
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.