Department of Applied Earth Sciences, Uva Wellassa University

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Post of Temporary Demonstrator/ Temporary Lecturer
Department of Applied Earth Sciences
Uva Wellassa University of Sri Lanka

Post of Temporary Demonstrator/ Temporary Lecturer | Uva Wellassa University of Sri Lanka Virtual Learning System or in general, Learning Management System (LMS) is one of the web applications used by the university for the administration, documentation, tracking, reporting and delivery of e-learning education. Students are facilitated to refer e-resources relevant to their academic acti...

Not All Crude Oil Is the Same!

🛢️ Not All Crude Oil Is the Same!
When we talk about “oil,” many people imagine the same black liquid everywhere. But in reality, crude oil varies greatly depending on where it is produced.
🇺🇸 United States – Light Sweet Crude
Light golden in color, low sulfur, and low viscosity. This type of oil is easier and cheaper to refine into fuels like gasoline and diesel.
🇮🇷🇷🇺 Iran & Russia – Heavy Sour Crude
Darker in color with higher sulfur content. It requires more complex refining processes and advanced technology.
🇻🇪 Venezuela – Extra-Heavy Crude
Extremely thick and viscous, almost like tar. Transporting and refining it is much more challenging and expensive.
📊 Why it matters:
The value of crude oil is not just about how much a country has — quality, sulfur content, and API gravity play a major role in determining its economic value.
⚙️ Understanding crude quality helps explain why some oil is easier to produce, transport, and refine than others.
🌍 Follow Oil Gas World 🌎 for more insights into the global energy industry.

Top 8 Crude Oils in the World – Quality Comparison

🛢️ Top 8 Crude Oils in the World – Quality Comparison
Not all crude oil is the same. The quality of crude oil varies depending on its API gravity and sulfur content, which determines how easy it is to refine and how valuable it is in global markets.
Here’s a comparison of eight major crude oil grades from around the world:
🇸🇦 Arab Light – Saudi Arabia
API: 33–35° | Sulfur: ~0.1–0.25%
One of the most widely traded crude oils with balanced quality and strong refinery yields.
🇺🇸 WTI – United States
API: 39–41° | Sulfur: ~0.2–0.4%
A premium light sweet crude, widely used as a global pricing benchmark.
🇬🇧 Brent – North Sea (UK/Norway)
API: 38–39° | Sulfur: ~0.3–0.4%
The global oil pricing benchmark used for about two-thirds of the world’s traded crude.
🇱🇾 Es Sider – Libya
API: ~37° | Sulfur: ~0.4–0.5%
High-quality light crude favored by European refineries.
🇩🇿 Saharan Blend – Algeria
API: 44–46° | Sulfur: ~0.1%
One of the lightest and sweetest crude oils in the world, producing excellent gasoline yields.
🇳🇬 Bonny Light – Nigeria
API: 32–34° | Sulfur: ~0.1–0.2%
A high-quality West African crude with strong global demand.
🇮🇷 Iranian Heavy – Iran
API: 29–30° | Sulfur: 3.5%
An extra-heavy crude that is more difficult and costly to refine.
📊 Key Insight:
Higher API gravity = lighter crude = easier refining
Lower sulfur content = sweeter crude = cleaner fuels
Understanding crude oil quality helps explain pricing differences, refinery preferences, and global oil trade dynamics.
🌍 Follow Oil Gas World 🌎 for more insights into the global energy industry.

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බදුලු ඔයට හුස්මක්

රුදුරු ගං දිය සමග රැගෙන ආ
නොදිරන අපද්‍රව්‍ය
ක්‍රමවත්ව බැහැර කරමින්,
පරිසරයට නැවත හුස්මක් දෙන්නට...

බදුල්ල මහ නගර සභාව මූලිකත්වයෙන් සංවිධානය කරනු ලබන,
ඌව වෙල්ලස්ස විශ්වවිද්‍යාලයීය
GeoPulse සමාජයේ ද සහභාගීත්වයෙන් සිදු කෙරෙන,
මෙම ශ්‍රමදාන වැඩසටහන සමගින්
පරිසර හිතකාමී ඔබත්
අත්වැල් බැඳගන්න....

🎉 Congratulations to Dr. Titus Cooray 🎉

We are delighted to announce that Dr. Titus Cooray, Head of the Department of Applied Earth Sciences, has been conferred the Presidential Award for Scientific Research – 2021 for his outstanding research titled “Profiles of antibiotic resistome and microbial community in groundwater of CKDu prevalence zones in Sri Lanka”.

This prestigious national recognition highlights Dr. Cooray’s significant contribution to scientific research and his continued dedication to advancing knowledge in the field of Earth Sciences. The Department takes great pride in this remarkable achievement, which brings honor to the academic community and inspires both staff and students.

👏 Warmest congratulations on this well-deserved achievement! 👏

National Building Research Organization identifies 1241 landslide locations

ජාතික ගොඩනැගිලි පර්යේෂණ සංවිධානය චන්ද්‍රිකා ඡායාරූප මඟින් නායයෑම් ස්ථාන 1241ක් හඳුනා ගනී...

පිවිසෙන්න: https://nbrosl-my.sharepoint.com/:b:/g/personal/geoailab_nbro_gov_lk/IQBccfYBhtRkQpKh-lBxc5ipAVB6XU5lHeTyCpLLcY9TLWk?e=dlTBf9

Call for Applications -2025
Post of Temporary Demonstrator
Department of Applied Earth Sciences

Post of Temporary Demonstrator – Department of Applied Earth Sciences | Uva Wellassa University of Sri Lanka Virtual Learning System or in general, Learning Management System (LMS) is one of the web applications used by the university for the administration, documentation, tracking, reporting and delivery of e-learning education. Students are facilitated to refer e-resources relevant to their academic acti...