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Oil and Natural Gas Corporation (ONGC) Placement Guide

Oil & Gas Exploration & Production (PSU) · New Delhi / Dehradun, India · ~26,000 employees · Founded 1956

ONGC is India’s largest crude-oil and natural-gas producer and a Maharatna PSU, central to the country’s energy security. Recruits Graduate Trainees largely via GATE-based selection.

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Business Model

India’s strategic upstream energy producer, anchoring domestic oil & gas supply and energy security.

Revenue streams

Key products

Customers

Salary & Roles

₹10 – 16+ LPA CTC (Graduate Trainee via GATE)

Roles typically hiring for

Eligibility criteria

Core engineering (Mechanical, Electrical, Chemical, Petroleum, Instrumentation, Civil) and allied; PSUs often recruit through GATE. Typically 60%+ / 6.5+ CGPA, no backlogs.

Hiring timeline

PSU hiring largely via GATE (annual cycle); private majors recruit on-campus Aug–Dec. Offer to joining: 3–8 months.

Skills to prepare

Core engineering fundamentalsProcess / plant operations knowledgeSafety (HSE) and reliability mindsetProject & maintenance managementDomain software & instrumentationGATE-level technical depth (for PSUs)

SWOT Analysis

Strengths

  • Largest domestic oil & gas producer
  • Maharatna PSU & strategic role
  • Strong reserves & infrastructure
  • Integrated via subsidiaries

Weaknesses

  • Ageing fields & declining output
  • Capex & exploration risk
  • Subsidy/policy exposure
  • Energy-transition pressure

Opportunities

  • Deepwater & new exploration
  • Gas & city-gas demand
  • Green energy diversification
  • Enhanced oil recovery

Threats

  • Oil-price volatility
  • Decarbonisation trend
  • Import dependence dynamics
  • Regulatory/pricing policy

Competitors

Reliance (E&P) Private rival

KG-basin gas.

Oil India PSU peer

Smaller upstream PSU.

Cairn/Vedanta Private rival

Onshore oil.

Global majors Tech rivals

Deepwater expertise.

Industry Intelligence

India imports most of its oil; upstream producers like ONGC are strategic, balancing field decline and exploration with a long energy-transition horizon.

Key trends

Outlook

Energy security keeps ONGC strategic; arresting field decline and diversifying into gas/green energy are the key priorities.

No.1 India
Production
Oil & gas
Maharatna
PSU status
Strategic
Large
Reserves
Domestic + OVL
Via GATE
Hiring
Graduate Trainees

Interview Process

Stage-by-stage, with tips and sample questions

1

GATE Score / Online Test

For PSUs, GATE score is the primary screen; private firms run aptitude + core-technical online tests.

Tips
  • For PSUs, target a strong GATE score
  • Revise core subjects thoroughly
  • Practice aptitude and technical numericals
Sample questions
  • Core-subject technical numericals (GATE-style)
  • Process/plant fundamentals MCQ
  • Aptitude & reasoning set
2

Technical Interview

Core engineering, process/plant understanding, safety, projects and practical reasoning.

Tips
  • Master core subjects and process basics
  • Know HSE and reliability fundamentals
  • Be ready to discuss internships at plants/sites
Sample questions
  • Explain the working of a heat exchanger / pump / turbine.
  • What safety systems exist in a plant?
  • Walk me through a process you studied.
  • Explain your major project.
3

HR / Fit Round

Mobility to plant/field locations, stability orientation and culture fit (especially for PSUs).

Tips
  • Be open to remote plant/field postings
  • Show commitment and stability
  • Know the organisation’s role in the sector
Sample questions
  • Why energy / oil & gas / this PSU?
  • Are you comfortable with remote plant locations?
  • Tell me about yourself.
  • Where do you see yourself in 5 years?

Frequently Asked Questions

Why energy / oil & gas / this PSU?

Structure your answer with a specific example from your resume or coursework, then use the AI Coach on the interactive page below for a tailored practice answer.

Are you willing to work at remote plant/field sites?

Structure your answer with a specific example from your resume or coursework, then use the AI Coach on the interactive page below for a tailored practice answer.

Tell me about yourself.

Structure your answer with a specific example from your resume or coursework, then use the AI Coach on the interactive page below for a tailored practice answer.

Explain the working of a pump / turbine / heat exchanger.

Structure your answer with a specific example from your resume or coursework, then use the AI Coach on the interactive page below for a tailored practice answer.

What are key plant safety (HSE) systems?

Structure your answer with a specific example from your resume or coursework, then use the AI Coach on the interactive page below for a tailored practice answer.

Difference between key concepts in your domain.

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How would you improve plant reliability/uptime?

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Reduce energy losses in a process.

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