Anantam IASCurrent Affairs · 29 October 2025

Oil and Petroleum – Prelims Pointers

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Why in News?

As USA imposed new sanctions on two Russian oil companies, effectively making Indian refiners sourcing crude look beyond them, Union Petroleum and Natural Gas Minister Hardeep Singh Puri asserted that there is enough global crude oil supply. The issue of Indian Oil Supplies is quite rife in recent times.

PYQ

2020 Prelims

The term ‘West Texas Intermediate’, sometimes found in news, refers to a grade of ()

(a) Crude oil

(b) Bullion

(c) Rare earth elements

(d) Uranium

2025 Prelims

Consider the following activities:

I. Production of crude oil

II. Refining, storage and distribution of petroleum products

III. Marketing and sale of petroleum products

IV. Production of natural gas

How many of the above activities are regulated by the Petroleum and Natural Gas Regulatory Board in our country?

  1. Only one
  2. Only two
  3. Only three
  4. All the four

Major Global Crude Oil Benchmarks

The most widely recognized global benchmarks are:

Classification of Crude Oil

1. Classification by Density (API Gravity)

ClassificationDensity Relative to Water ( the lighter the better) 
Light CrudeLighter than water
Medium CrudeVaries
Heavy CrudeHeavier than water (may sink)

2. Classification by Sulfur Content (Sweetness)

ClassificationSulfur ContentRefining Difficulty
Sweet CrudeLess than or equal to 0.5%Easier (Less costly refining)
Sour CrudeMore than 0.5%More complex (Requires costly desulfurization)

Largest Crude Oil Producers, Exporters, and Reserves in World

RankLargest Producers (Crude Oil)Largest Exporters (Crude Oil)Largest Proven Reserves (Crude Oil)
1United StatesSaudi ArabiaVenezuela
2Saudi ArabiaRussiaSaudi Arabia
3RussiaIraqCanada
4CanadaUnited StatesIran
5ChinaCanadaIraq

Top Sources of Crude Oil to India

Rank CountryEstimated Share of India’s Crude Oil Imports (FY 2025-2026 est.)Why?
1Russia~34% – 36%Became the largest supplier since 2022, primarily due to discounted prices. However, recent geopolitical developments and US sanctions on Russian oil majors may lead to a future decline in this share.
2Iraq~20% – 23%Traditionally India’s largest supplier for many years, offering stable supplies and competitive terms.
3Saudi Arabia~16% – 18%A long-standing, key strategic partner and major supplier from the Middle East.
4United Arab Emirates (UAE)~8% – 10%Another reliable Middle Eastern supplier, often involved in strategic energy investments in India.
5United States (US)~6% – 7%Volumes have been increasing due to trade diversification and favorable market conditions.

Top Countries by Oil Refining Capacity : 2023

RankCountryCapacity (Thousand Barrels Per Day)
1United States18,620
2China14,180
3Russia6,420
4India4,620
5Japan3,600

Top Countries by Refined Petroleum Exports : 2023

RankCountryExport Value (Billion USD)
1United States$112.9
2India$85.0
3Netherlands$72.0
4Singapore$57.0
5South Korea$50.9

About PNGRB

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