Page 43 - Petroleum and Gas Field Processing

Figure 13 Liner completion.

well completion and configuration. Tubing–casing configurations can be
grouped under two main categories: the conventional and the tubingless
completions.
A conventional completion is the completion with a production tubing
inside the production casing. A packer may or may not be used and the
production could be through the tubing, the annulus, or both. Depending
on the number of petroleum formations to be produced through the well,
we may have either single or multiple completion. Figure 14 illustrates a
multiple (triple) conventional completion.
The tubingless completion is a special type of completion where a
relatively small-diameter production casing is used to produce the well
without the need for production tubing. Such completions are low-cost
completions and are used for small and short-life fields. Again, we may
have multiple tubingless completions or single as illustrated in Figure 15.

1.8.2 Tubing Design
Tubing design involves the determination of the size, the grade, and weight
of the production tubing. The size of the production tubing is controlled
by the production rate, the types of flowing fluid, and the pressures at the
bottom of the well and at the surface. The grade and weight of the tubing
reflect its strength and are determined through analysis of the various
loads that act on the tubing under all expected conditions.

Copyright 2003 by Marcel Dekker, Inc. All Rights Reserved.