Optical fiber for pumping and method

Abstract

A fiber optic cable includes at least one optic fiber; and a buoyancy modifying coating on the at least one optic fiber, the coating comprising at least one microballoon and a matrix material.

1 . A method for installing at least one optic fiber cable in a tubular comprising:
 coupling a fluid carrier to an optic fiber cable with viscous drag forces;   pumping the fluid into a tubular structure having a downhole directed leg and an uphole directed leg; and   displacing at least a portion of the mass of the cable independently of the pumping of the cable.   
   
   
       2 . The method for installing as claimed in  claim 1  wherein the displacing includes causing the cable to be buoyant in the fluid. 
   
   
       3 . The method for installing as claimed in  claim 1  wherein the causing the cable to be buoyant in the fluid is by adjusting the density of the fluid to greater than that of the cable. 
   
   
       4 . The method for installing as claimed in  claim 1  wherein the causing the cable to be buoyant in the fluid is by coating the cable at least in part with a coating having a buoyancy greater than that of the cable. 
   
   
       5 . The method for installing as claimed in  claim 1  wherein the coating includes admixing at least one microballoon. 
   
   
       6 . The method for installing as claimed in  claim 1  wherein the displacing includes floating.