This section presents the methods for calculating the following loads on the casing:

- Pressure loads (i.e. burst and collapse)
- Installation loads
- Service loads.
- Specifc cases (stove pipes, foundation piles, (marine) conductors

Service loads

The previous article presented the methods to quantify the installation and as-landed loads. The purpose of this article is to present methods to quantify the changes in stress in the cemented casing…

Stove pipe, foundation pile, marine conductor and conductor string

The load determination for a stove pipe, foundation pile or marine conductor is a complex issue. This determination is usually followed by specialised stress analysis resulting in the involvement of a…

Installation loads

This articel describes the various installation loads and how they are calculated.

  • self-weight (in air) loads
  • pressure (buoyancy) loads
  • bending loads
  • dynamic drag loads
  • shock loads
  • point loads
  • static…

Load bearing capacity

It should be noted that the strengths require down rating to account for the effects of wear, corrosion and fatigue and for the effect of temperature on yield strength.

The appearance of commercial…

Pressure loads (burst and collapse)

The burst and collapse loads are calculated by taking the difference (Pi-Pe) between the internal and external pressure profiles for each load case.

If the resulting load line is mainly positive, it…