Installation of a small diameter velocity string (VS) is often necessary in tight gas wells to resolve liquid loading problems. Coiled Tubing (CT) is commonly used as a velocity string conduit due to safe live-well installations and speed. A technique is being applied in which wells are cleaned out with coiled tubing which is then hung off as a velocity string in one trip. The wells are left flowing during the entire operation so that the wells are not loaded up completely and off production after the operation. A new coiled tubing hanger was designed and utilized such that two well control barriers are maintained during the operation. This paper will review the equipment package and the installation process.

Keywords:
upstream oil & gas, spe 143298, gate valve, velocity string, completion installation and operations, christmas tree, shell upstream america, master valve, ct hanger, lower master valve
Subjects:
Completion Installation and Operations, Coiled tubing operations
Copyright 2011, Society of Petroleum Engineers
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