Educational Qualification (Stream-Wise) Stream Essential Qualification Petroleum Engineering Graduate Degree in Petroleum Engineering (min. 60% marks) OR Graduate Degree in Applied Petroleum Engineering (min. 60% marks) Mechanical Engineering Graduate Degree in Mechanical Engineering with minimum 60% marks Chemical Engineering Graduate Degree in Chemical Engineering with minimum 60% marks Instrumentation Engineering Graduate Degree in Instrumentation Engineering with minimum 60% marks Geology Post Graduate Degree in Geology (min. 60%) OR M.Sc./M.Tech in Petroleum Geoscience (min. 60%) OR M.Sc./M.Tech in Petroleum Geology (min. 60%) OR M.Tech in Geological Technology (min. 60%) Qualifications must be approved/recognized by relevant statutory bodies (e.g. AIU, UGC, AICTE); Distance Learning/part-time qualifications are accepted only if similarly recognized. Qualifications listed are "sacrosanct" - no equivalent qualification is accepted (for example, AMIE is not accepted where a Graduate Degree in Engineering is required). CGPA/OGPA/CPI/DGPA or letter grades must be converted to a percentage as per the university/institute's own conversion norms; a conversion certificate must be submitted at document verification. Only candidates who have already acquired the qualification on or before the last date of application will be considered. BE/B.Tech in Chemical Sciences and Technology will not be accepted for the Chemical Engineering stream. ONGC Age Limit 2026 (as on last date of application) Category Max. Age (Streams 1–4: Engineering) Max. Age (Stream 5: Geology) Unreserved/EWS 26 Years 27 Years OBC (NCL) 29 Years 30 Years SC/ST 31 Years 32 Years PwBD – General/EWS 36 Years 37 Years PwBD – OBC (NCL) 39 Years 40 Years PwBD – SC/ST 41 Years 42 Years Ex-Servicemen – General/EWS 31 Years 32 Years Ex-Servicemen – OBC (NCL) 31 Years 32 Years Ex-Servicemen – SC/ST 31 Years 32 Years Departmental Candidates Relaxation as per respective category, plus further relaxation equal to service rendered in ONGC Ex-servicemen who are also ONGC departmental candidates get whichever age relaxation (Ex-servicemen or Departmental) is higher.

Category Registration Charges GEN/OBC/EWS ₹1000/-* SC/ST/PwBD No charges *The registration fee excludes convenience fee/bank commission plus GST. Registration fee is non-refundable and must be deposited online. ONGC departmental candidates must also pay the applicable fee, which is reimbursable to them.

Selection consists of three stages: Computer Based Test (CBT) Interview Medical Fitness (as per ONGC Medical Examination of Employees Rules) Only candidates who qualify all three stages will be issued an Offer of Appointment. CBT scores are used to shortlist candidates for interview in a 1:5 ratio per category (all candidates meeting the cut-off are shortlisted even if this exceeds the ratio). Shortlisted candidates may also be subjected to a Group Discussion, which is not of qualifying nature. Weightage for Final Selection Parameter Marks CBT Score 85 Interview 15 Total 100 Qualifying Marks CBT: General/EWS/OBC candidates need a minimum of 45%; SC/ST/PwBD candidates need a minimum of 40%. Interview: General/EWS/OBC candidates need a minimum of 60% (9 out of 15 marks); SC/ST/PwBD candidates need a minimum of 40% (6 out of 15 marks).