Production tubing passes through the wellbore up to the reservoir and is responsible for transporting the reservoir fluids to surface. While selecting production tubing, the wellbore geometry, properties of reservoir fluids and production characteristics of the concerned reservoir have to be considered. Production tubing along with other completion components such as casing makes up the production string.
Production string is the primary conduit for conveying reservoir fluids to surface. The production string is typically consists of production tubing along with completion components in an assembly to suit the wellbore geometry and production method. An important function of the production string is to protect the primary wellbore tubulars, including the casing and liner, from corrosion or erosion by the reservoir fluid.
