Question

Ankleshwar oilfield is located in which state?

• A. Assam
• B. Rajasthan
• C. Andhra Pradesh
• D. Gujarat

Hint:

Key Indian oilfields by state:
Gujarat: Ankleshwar, Kalol, Mehsana, Nawagam, Lunej.
Assam: Digboi (oldest in India), Naharkatiya, Moran-Hugrijan.
Rajasthan: Mangala, Bhagyam, Aishwarya (Barmer district).

Answer 1

The Correct Option is D

Concept:
Petroleum and natural gas resources in India occur in sedimentary basins associated with tertiary rock formations.
Major onshore hydrocarbon production is concentrated across specific geographic regions including the Western Coast basin, the Northeastern region, and Western Rajasthan.
The state of Gujarat represents one of India's most prominent onshore and offshore petroleum-producing provinces.

Step 1: Geographic Distribution of Gujarat Oilfields:
The Cambay Basin in Gujarat contains extensive reservoirs of high-grade crude oil and associated natural gas.
Ankleshwar, located in the Bharuch district of Gujarat, is one of the oldest and most prolific commercial oilfields discovered by the Oil and Natural Gas Corporation (ONGC).
Discovered in 1958, Ankleshwar began major commercial crude oil production in the early 1960s and is famously referred to as the "Fountain of Prosperity".

Step 2: Evaluation of Alternative States:
Assam contains major northeastern oilfields such as Digboi, Naharkatiya, and Moran-Hugrijan.
Rajasthan has significant major onshore oilfields located in the Barmer-Sanchore basin, such as Mangala, Bhagyam, and Aishwarya.
Andhra Pradesh contains hydrocarbon reserves along the Krishna-Godavari (KG) offshore and coastal onshore basin.
Final Answer:
Consequently, the Ankleshwar oilfield is situated in the state of Gujarat.