Patent ID: 9500058
Filing Date: 2016-11-22
CPC Classification: E21B

Claim Text:
1. A coiled tubing tractor assembly comprising: a hydraulically driven coiled tubing tractor for substantially continuous advancement through a well, said tractor having a first housing about a first head of a piston, the first head for moving responsively to an influx of hydraulic pressure into the first housing, said tractor having a second housing about a second head of the piston to display moveable responsiveness to the moving of the first head relative to the piston; a coiled tubing defining an interior fluid flow path coupled to said coiled tubing tractor, wherein fluid flowing from the surface of the wellbore along the fluid flow path provides the hydraulic pressure for the tractor; a fiber optic tether disposed in the fluid flow path of the coiled tubing to provide a communicative pathway between surface equipment at the well and through the fluid flow path of the coiled tubing, the fiber optic tether negligibly affecting a movement of the hydraulic fluid through the coiled tubing; and a downhole tool coupled to the coiled tubing and positioned downhole of the coiled tubing tractor in the well, said downhole tool communicatively coupled to the fiber optic tether through the coiled tubing tractor by a signal converter for conversion of a fiber optic signal from the surface equipment to an electronic signal understood by said downhole tool.