Injection Down Casing
In this document we describe the load case "Injection down casing"
Last updated
In this document we describe the load case "Injection down casing"
Last updated
Injection down casing is a burst load case, where the unknown is the internal pressure profile of the casing / tubing
Note: In this documentation we denote any tubular as casing or tubing. All calculations however encompass any tubular, such as tubings, casings, liners, tie-backs etc.
This is a load case that models an applied surface pressure to a static fluid column.
The following inputs define the injection down casing load case
The true vertical depth (TVD) along the wellbore as a function of measured depth. Alternatively, the wellbore described by a set of survey stations, with complete information about measured depth, inclination, and azimuth.
The true vertical depth / TVD of
The hanger of the casing / tubing, .
The shoe of the tubing, .
The applied injection pressure, .
The density of the injection fluid, .
The internal pressure profile of the tubing is simply calculated as