Crude Oil types Explained!


The crude oil is a great resource that is used all over the world every day. In this blog post, we will discuss the crude oil types that are used in the markets all over the world. These types have to be understood so that you can look up the various filtration modes that these crude oil products use. 

Following are the four types that we are discussing:

Light Distillates:


The light distillates are the OIL FIELD ASSISTANT that have high volatility, and that means they are easily combustible and will also evaporate if left in the open air. They are considered the highest quality of oils produced in the crude oil extraction process and are the lightest in chemical composition. The oils such as Kerosene, light and heavy Naphtha, Petroleum Spirit, Petroleum Naphtha, Gasoline, Jet Fuel, and Petroleum Ether are all forms of the light distillates.

Middle Distillates:


The grade 1 and grade 2 fuel oils and diesel that is a part of the middle distillates category include the usual domestic fuels, light, crude marine gas oils, and similar diesel-based products. These oils are also considerably volatile but are less volatile than their lighter counterparts. They are also comparatively less evaporative and their fumes are toxic as well.

Medium Oils:


This is the most extensive category of crude oil with a lot of leftover forms of crude oil being used on more everyday purposes. These are less volatile oils with an increased toxicity level and all the usual oil spills in the oceans are mainly these forms of oils. 

Heavy Crude Oils:

Heavy-Crude-Oils.jpgHeavy crude oils are also known as heavy fuel oils and include grades 3, 4, 5 and 6 fuel OIL ADDITIVES also known as Bunker B & C. The intermediate heavy marine fuels are included in this list. There is minimal evaporation of these oils and they are highly toxic in nature. They have a strong tendency to be toxic for fish, fowl and fur-bearing creatures. They also cause long term contamination of water and soil that they come across. 

There are more than 160 different forms of crude oils but they are usually all falling in one of these categories. 

We would love to know what you find out on the purification of all of these crude oils.

Oil Field Water Injection Corrosion Inhibitor (AD-601)


This product is compound mainly by imidazoline quaternary ammonium salt with some other corrosion additives, surfactants, etc. It has good corrosion resistance, good solubility, low emulsifying tendency and can be used in combination with many other chemical agents. It can inhibit both uniform corrosion and pitting corrosion It is an ideal corrosion inhibitor for water injection system in oil field.

It is suitable for corrosion prevention of sewage treatment and closed water injection system and dissolved pipeline in high mineralization oil field.


  1. Specifications
Item Index
Appearance Orange-yellow to reddish brown liquid
Density (20℃),g/cm3 0.95-1.05
PH      ≥ 7.0
Condensation point    ℃    ≤ -4.5
Solubility Soluble in water
Corrosion rate,mm/a       ≤ 0.076
  1. Usage

The concentration used is usually 50-100 PPM.

  1. Package and Storage

200kg plastic lined iron drum or 25kg plastic drum package.

Store in a cool, dry place indoors with a shelf life of one year.

Compound Crude Oil Demulsifier (AD-501)


After the emulsion formed from crude oil containing water, its viscosity, density and freezing point increases, this makes the liquidity of crude oil worse, oil well production load rising and the energy consumption increasing, at the same time, the storage and transportation energy consumption also getting higher.

A summary treatment of crude oil follows. For full treatment, see petroleum, petroleum production, and petroleum refining.

Crude oil is a mixture of comparatively volatile liquid hydrocarbons (compounds composed mainly of hydrogen and carbon), though it also contains some nitrogen, sulfur, and oxygen. Those elements form a large variety of complex molecular structures, some of which cannot be readily identified. Regardless of variations, however, almost all crude oil ranges from 82 to 87 percent carbon by weight and 12 to 15 percent hydrogen by weight.

Crude oils are customarily characterized by the type of hydrocarbon compound oil that is most prevalent in them: paraffins, naphthenes, and aromatics. Paraffins are the most common hydrocarbons in crude oil; certain liquid paraffins are the major constituents of gasoline (petrol) and are therefore highly valued. Naphthenes are an important part of all liquid refinery products, but they also form some of the heavy asphaltlike residues of refinery processes. Aromatics generally constitute only a small percentage of most crudes. The most common aromatic in crude oil is benzene, a popular building block in the petrochemical industry. And Grill