The popularity of horizontal drilling has resulted in a number of new
completion techniques including the use of coiled tubing in the treatm
ent of horizontal wells. This paper presents an overview of the charac
teristics and mechanical properties of coiled tubing in a horizontal e
nvironment. A number of workover methods are examined, including. hori
zontal fill cleanout, gas lifting and chemical treatments. The paper a
lso discusses the development of coiled tubing tools and computer simu
lators.