Sub-surface safety valves (SSSV)

Sub-surface safety valves (SSSV)

Subsurface safety valves (SSSVs) are installed in the wellbore of hydrocarbon producing wells to shut off the production flow to the surface in case of an emergency. The importance of the correct…

Completion operations - Setting packers

Completion operations - Setting packers

Whatever type of packer is installed, the manufacturer's instruction for setting and the completion programme on setting depth and running must be followed if satisfactory results are to be obtained.…

Packer Setting Mechanism

Packer Setting Mechanism

The following 5 Packer setting mechanisms are discussed in this article:

  1. Compression set anchor packer
  2. Mechanically set compression packers
  3. Mechanically set tension packer
  4. Hydraulic set…

Completion Operations - Gravel Packing Procedures

Perforation prepacking refers to the methods that can be used to pack the perforation tunnels with gravel prior to filling the screen/casing annulus. The main objective of prepacking is to maximise…

Xmas tree installation

this article presents the main operational and safety precautions to be taken when installing a xmas tree.

1. General Precautions

There are many methods of landing the tubing and leading control…

Completion Operations - Perforating

Perforating is a service provided by specialist companies, however, it is common for Production Operations to be involved in the operation to facilitate well production after perforation in completed…

Procedures for Completion Assembly Preparation

This procedure identifies the assembly and test method for all completion sub assemblies.

All assembly and testing shall be performed by persons, who have, as a minimum, undergone indoctrination and…

Tubing running and testing

The following installation considerations apply to all threaded connections if mishaps are to be avoided:

  • drift check and inspect connections before running;
  • properly apply correct thread dope;
  • backout…

Responsibilities during Completion Operations

It is advised that onshore meetings will be held between equipment vendor, Company, wireline contractor and drilling contractor at least 6 weeks prior to the start of operations.

Company…

Completion Operations - Packer (introduction)

Completion Operations - Packer (introduction)

A packer is defined as a sub-surface tool used to provide a seal between the tubing and casing (or wall) of a well, thus preventing the vertical movement of fluids past this sealing point. Packers…

Packers retrievability

Packers retrievability

The following provides information based on past experience of the retrievability of packers, which provides general trends and guidelines for the execution of such activities. However, every well is…