A new method and apparatus have been developed which inserts and withdraws
tubing from pipes without bending or kinking the tubing. Beneficially, the
new method and apparatus may be employed to insert and withdraw tubing to
depths greater than ever possible before. The method involves using a
thruster pig to provide force to inject the tubing, and skate apparatuses
to reduce coiling and friction of the tube. Advantageously, the apparatus
is portable, easily handled, and adaptable to handle tubing of differing
diameters.