Reservoir Properties and Completion Selections


In order to properly design a completion, reservoir rock and fluid properties must be carefully taken into account because they directly influence on equipment selection.  Reservoir properties (rock and fluid properties) which must be considered are as follows;

Rock Properties

Permeability (k)

Low permeability formation may require fracturing operation to enhance production. The completion for tight formations must be able to withstand pumping pressure and allow fracking fluid and proppant to flow through.

Formation Strength

Unconsolidated formations are required to complete a well with a sand control completion; thus, a well can be produced without any damage to downhole and surface equipment.

Formation Pressure

Reservoir pressure directly affects the pressure rating on all completions because all components must be able to work under reservoir condition. What’s more, formation pressure will affect how much flow of the well can produce.

Formation Temperature

High reservoir temperature will quickly degrade some components, especially elastomer, and this will result in well integrity issues due to pressure leakage. This is one of the critical concerns in selecting the right equipment to work under high temperature conditions. Continue reading

Please follow and like us:

Important Mechanical Properties of Materials and Effect of Corrosion on Load Carrying Components


Mechanical properties of material are one of the most important basic concepts in a well design and this section will briefly discuss about key mechanical properties and their applications. Furthermore, there is a discussion about effect of corrosion on the mechanical performance of load carrying components.


Mechanical Properties of Material

Basic mechanical properties are as follows;


Hardness is a resistance of materials to permanent deformation and is sometimes referred to a resistance to abrasion or scratching. The greater of the hardness, the harder it is for the materials to deform. The application of hardness is to inspect if materials have been properly treated during a heat treatment process. The comparison between the actual hardness and the standard hardness of materials will show whether the current batch of material is proper and suitable for use or not.


Strength of material is an ability to work within a load without failure of the material. Tensile and yield strength are critical properties in terms of material strength.

Tensile Strength

Tensile strength or ultimate tensile strength is the maximum stress on an engineering stress-strain curve. At this point, materials are plastically deformed but they may not be broken apart yet depending on types of materials. Continue reading

Please follow and like us:

Important Material Properties of Tubular and Completion String

It is imperative to understand mechanical properties of tubular because it involves the safety structure of the well. Failure in completion can cause major catastrophic problems in people safety, major loss of expenditure and loss of production from a well.

This article will describe the basic mechanical properties which are very essential to understand. Continue reading

Please follow and like us:

Common Crude Oil Properties in Petroleum Industry (Video Training)

Crude oil properties are important for us to understand what they mean and how they will affect us. The most commonly measured properties of crude oil are specific gravity or API gravity, viscosity, color, and odor.

This video training will teach you all basic information about crude oil properties so you will know and be able to quickly differentiate crude oil. Addtionally, we also provide you full video transcript which may help someone to effectively learn from this training material.

Continue reading

Please follow and like us: