Oil India Limited (OIL) has released the official Deputy Chief Chemist, Deputy Chief Geologist, Deputy Chief Engineer (Reservoir), Deputy Chief Geophysicist, Deputy Chief Engineer (S&E), and Economist Notification 2026 on 28 May 2026 at the official website. A total of 10 vacancies have been announced under the OIL Recruitment 2026. Eligible candidates with the required educational qualifications and relevant post-qualification experience can apply online through the OIL website from the release date up to 28 June 2026. The official notification PDF and online application link are available below.
Oil India Limited Recruitment 2026 Notification PDF
Oil India Limited, a Maharatna Public Sector Undertaking, has officially released Advertisement No. HRAQ/REC-EX-B/2026-01 dated 28/05/2026 for filling up posts of Deputy Chief Chemist, Deputy Chief Geologist, Deputy Chief Engineer (Reservoir), Deputy Chief Geophysicist, Deputy Chief Engineer (S&E) and Economist in Grade D/E/F. The notification includes complete details on vacancies, minimum essential educational qualifications, post-qualification relevant work experience, job descriptions, pay scales, selection process, age relaxation, PwBD eligibility, application instructions and important dates. Candidates are strongly advised to read the full notification before applying online. The notification is available on the official Oil India Limited website.
Oil India Limited Recruitment 2026 Overview
Oil India Limited is recruiting 10 posts across Deputy Chief Chemist, Deputy Chief Geologist, Deputy Chief Engineer (Reservoir/S&E), Deputy Chief Geophysicist and Economist in Grade D/E/F, last date for online application 28 June 2026.
| Organization Name | Oil India Limited (OIL) – Maharatna Central Public Sector Undertaking |
| Advertisement No. | HRAQ/REC-EX-B/2026-01 dated 28/05/2026 |
| Post Names | Deputy Chief Chemist, Deputy Chief Geologist, Deputy Chief Engineer (Reservoir), Deputy Chief Geophysicist, Deputy Chief Engineer (S&E), Economist |
| Grade | Grade D (all posts); Grade E and Grade F additionally for Economist post |
| Total Vacancies | 10 (provisional, subject to actual requirement) |
| Pay Scale | Grade D: Rs. 90,000–2,40,000 | Grade E/F: Rs. 1,00,000–2,60,000 (Approx. Gross: ~Rs. 1,70,000/month in Grade D; ~Rs. 2,00,000/month in Grade E/F) |
| Cut-off Date (Age, Experience, Qualification) | 28-06-2026 |
| Application Mode | Online only via OIL website (https://www.oil-india.com/advertisement-list) |
| Selection Mode | Personal Interview (PI) + Pre-Employment Medical Examination (PEME) |
| Place of Posting | Primarily Field Headquarters, Duliajan, Assam (transferable to any OIL operational area/office) |
| Probation Period | 01 Year |
| Official Website | www.oil-india.com |
Oil India Limited Recruitment 2026 Important Dates
| Event | Date / Time |
|---|---|
| Opening of Online Application Portal | 28-05-2026 at 14:00 hours |
| Last Date for Online Application Submission | 28-06-2026 at 23:59 hours |
| Cut-off Date for Age, Experience and Qualification | 28-06-2026 |
| Personal Interview Date | To be intimated to shortlisted candidates via email only |
Oil India Limited Recruitment 2026 - Vacancy Details
A total of 10 vacancies have been announced across 6 posts in Grade D/E/F. The number of posts is provisional and may vary as per actual requirement. One vacancy is reserved for PwBD candidates. Reservation/relaxation for SC/ST/OBC-NCL/PwBD/EWS is as per applicable Government of India directives.
| SN | Post Name | Post Code | No. of Posts | Grade | Pay Scale |
|---|---|---|---|---|---|
| 1 | Deputy Chief Chemist | CHEM-01 | 01 UR | D | Rs. 90,000–2,40,000 |
| 2 | Deputy Chief Geologist | GEO-02 | 01 UR | D | Rs. 90,000–2,40,000 |
| 3 | Deputy Chief Engineer (Reservoir) | RES-03 | 01 UR | D | Rs. 90,000–2,40,000 |
| 4 | Deputy Chief Geophysicist | GEOP-04 | 01 UR | D | Rs. 90,000–2,40,000 |
| 5 | Deputy Chief Engineer (S&E) | S&E-05 | 05 - UR-03, OBC(NCL)-01, SC-01 | D | Rs. 90,000–2,40,000 |
| 6 | Economist | ECO-06 | 01 UR | D / E / F | Grade D: Rs. 90,000–2,40,000 | Grade E/F: Rs. 1,00,000–2,60,000 |
| Total | 10 | ||||
Abbreviations: UR – Unreserved, OBC(NCL) – Other Backward Classes (Non-Creamy Layer), SC – Scheduled Caste, PwBD – Persons with Benchmark Disabilities, EWS – Economically Weaker Section. The dual upper age limit (e.g. 37/39) indicates the benefit of 2 additional years available to candidates holding a Postgraduate Degree or Diploma of minimum 2 years' duration as part of their essential qualification.
Oil India Limited Recruitment 2026 - Eligibility Criteria
All candidates must be Indian nationals. Only full-time post-qualification work experience in Executive cadre counts as relevant work experience. Experience from academic, research, fellowship, consultancy, apprenticeship, internship, JRF/SRF, PhD scholar, project-based or part-time roles is explicitly excluded. All essential educational qualifications must be from Universities/Institutions recognized by appropriate statutory authorities in India.
| Post (Post Code) | Essential Educational Qualification | Minimum Post-Qualification Work Experience | Experience Preference |
|---|---|---|---|
| Deputy Chief Chemist (CHEM-01) | PG Degree in Chemistry (min. 2 years) with min. 60% marks or equivalent CGPA; must have studied Physics, Chemistry and Mathematics at graduation level | 09 years as Chemist (Drilling/Workover) or Drilling Fluid Specialist or in-line functional experience in Executive cadre | Oil & Gas Sector experience preferred |
| Deputy Chief Geologist (GEO-02) | PG Degree in Geology/Applied Geology (min. 2 years) with min. 60% marks or equivalent CGPA; must have studied Mathematics at graduation level | 09 years as Geologist or in-line functional experience in Executive cadre | Upstream Oil & Gas Sector experience preferred |
| Deputy Chief Engineer (Reservoir) (RES-03) | B.E./B.Tech in Petroleum Engineering (min. 4 years) with min. 65% marks OR Master's Degree in Petroleum Engineering/Technology (min. 2 years) with min. 60% marks along with B.E./B.Tech in any Engineering discipline (min. 4 years) | 09 years as Reservoir Engineer or in-line functional experience in Executive cadre | Upstream Oil & Gas Sector experience preferred |
| Deputy Chief Geophysicist (GEOP-04) | PG Degree in Geophysics/Applied Geophysics/Exploration Geophysics (min. 2 years) with min. 60% marks or equivalent CGPA (PG in Computational Seismology etc. excluded) | 09 years as Geophysicist or in-line functional experience in Executive cadre | Oil & Gas Sector experience preferred |
| Deputy Chief Engineer (S&E) (S&E-05) | B.E./B.Tech in Fire & Safety Engineering/Fire Engineering (min. 4 years) with min. 65% marks OR Master's Degree/Diploma in Industrial Safety or HSE (min. 2 years) with min. 60% marks along with B.E./B.Tech in any Engineering discipline (min. 4 years) | 09 years in handling Health, Safety and Environment (HSE) matters as an Officer or in-line functional experience in Executive cadre | Oil & Gas Sector experience preferred |
| Economist (ECO-06) – Grade D | PG Degree in Economics or Business Economics with min. 60% marks or equivalent CGPA | 09 years as Economist or in-line functional experience in Executive cadre (exposure in macroeconomic analysis, policy research, econometric modelling, project evaluation, data analysis) | Energy/E&P/PSU sector experience preferred |
| Economist (ECO-06) – Grade E | Same as above | 13 years (same functional criteria) | |
| Economist (ECO-06) – Grade F | Same as above | 17 years (same functional criteria) |
Additional condition for candidates in regular Government/PSU employment: Must have minimum 2 years' experience in the next lower pay scale or equivalent (as per Table-III in the notification - IDA/CDA/PSB pay equivalence chart). Candidates from private sector companies must belong to organizations with a minimum annual turnover of Rs. 500 Crores.
Oil India Limited Recruitment 2026 - Age Limit
| Post Name | Upper Age Limit (as on 28-06-2026) |
|---|---|
| Deputy Chief Chemist | 39 years |
| Deputy Chief Geologist | 39 years |
| Deputy Chief Engineer (Reservoir) | 37/39 years |
| Deputy Chief Geophysicist | 39 years |
| Deputy Chief Engineer (S&E) | UR: 37/39 | OBC(NCL): 40/42 | SC: 42/44 years |
| Economist | Grade D: 39 | Grade E: 44 | Grade F: 49 years |
The upper age limit is calculated as on 28-06-2026. After applying all applicable age relaxations (including for internal candidates), the maximum upper age limit shall in no case exceed 54 years for any candidate.
| Category | Age Relaxation |
|---|---|
| Unreserved (UR) / EWS | As per post (39 years for most Grade D posts) |
| OBC (Non-Creamy Layer) | 3 years over UR upper age limit |
| SC / ST | 5 years over UR upper age limit |
| PwBD | As per Government of India Directives |
| Ex-Servicemen | 5 years |
| J&K Domicile (01-01-1980 to 31-12-1989) | 5 years (domicile certificate from prescribed authority required) |
| Candidates with PhD in relevant discipline | 3 years |
| Candidates with PG Degree/Diploma (min. 2 years) as part of essential qualification | 2 years additional upper age (already incorporated in the table; e.g. 37/39 or 39 as indicated) |
| Internal Candidates of OIL (otherwise eligible) | Upper age limit: 54 years |
| Maximum ceiling after all relaxations (all candidates) | 54 years |
Oil India Limited Recruitment 2026 - Application Fee
| Category | Application Fee |
|---|---|
| All Categories | Not mentioned in notification (check official website before applying) |
Oil India Limited Recruitment 2026 - Pay Scale
| SN | Post Name | Pay Scale |
|---|---|---|
| 1 | Deputy Chief Chemist | Rs. 90,000–2,40,000 |
| 2 | Deputy Chief Geologist | Rs. 90,000–2,40,000 |
| 3 | Deputy Chief Engineer (Reservoir) | Rs. 90,000–2,40,000 |
| 4 | Deputy Chief Geophysicist | Rs. 90,000–2,40,000 |
| 5 | Deputy Chief Engineer (S&E) | Rs. 90,000–2,40,000 |
| 6 | Economist | Grade D: Rs. 90,000–2,40,000 | Grade E/F: Rs. 1,00,000–2,60,000 |
Oil India Limited Recruitment 2026 - Selection Process
Selection for all notified posts is through Personal Interview (PI) only - there is no written examination. Shortlisting will be done based on details furnished in the online application. Only eligible/shortlisted candidates will be notified for PI via email. If the number of applications is very large, OIL may raise the minimum eligible standards to restrict the number of candidates called for PI. Provisionally selected candidates must clear Pre-Employment Medical Examination (PEME) at OIL Hospital, Duliajan, Assam or at a Government Medical Officer (Civil Surgeon rank or above) or OIL-empanelled hospital before final appointment.
| Stage | Process | Applicable Posts |
|---|---|---|
| Stage 1 | Screening of online applications against prescribed eligibility criteria (shortlisting) | All Posts |
| Stage 2 | Personal Interview (PI) - selection based solely on PI performance, subject to document verification and eligibility compliance | All Posts |
| Stage 3 | Pre-Employment Medical Examination (PEME) - final appointment only after declaration of medical fitness by OIL Medical Board | All Posts (Provisionally Selected Candidates) |
Oil India Limited Recruitment 2026 - Post-wise Job Description Summary
Each post carries a defined technical/functional scope. The table below gives a quick summary to help candidates assess alignment with their background before applying.
| Post | Core Functional Areas | Key Tools / Domain Knowledge Required |
|---|---|---|
| Deputy Chief Chemist | Drilling/workover fluid preparation, testing and quality control; wellsite chemical management; inventory, documentation and chemical operations at drilling/workover sites; cementing, oil spotting, loss control and well kick management support | Drilling fluid rheology; HSE compliance; chemical operations management |
| Deputy Chief Geologist | Geological studies and interpretation; basin analysis; wellsite geology; mud logging; core and cuttings analysis; formation evaluation; well log interpretation; subsurface evaluation and field development planning; technical report and map preparation | Petrel, Kingdom Suite or equivalent geological software; sedimentology; structural geology; geo-statistics |
| Deputy Chief Engineer (Reservoir) | Reservoir characterization and modelling; hydrocarbon reserves estimation (SPE/PRMS); dynamic reservoir simulation; field development planning; well and reservoir performance monitoring; enhanced oil recovery studies | ECLIPSE, CMG or equivalent simulation software; decline curve analysis; material balance methods |
| Deputy Chief Geophysicist | 2D/3D seismic data acquisition and processing; seismic interpretation (AVO, inversion, attributes); gravity/magnetic/EM surveys; integration of geophysical, geological and GIS data; prospect generation and basin modelling | Modern geophysical software; machine learning for interpretation; VSP; quantitative interpretation techniques |
| Deputy Chief Engineer (S&E) | Safety Management Systems (SMS); HSE inspections, audits, risk assessments; incident/accident investigation; statutory compliance (Factories Act, DGMS, OISD, PNGRB, PESO, CPCB/SPCB); EIA/EMP; environmental auditing; ESG/CSR/BRSR/GRI/SBTi/SDG framework integration | ISO 14001; GIS/environmental modelling tools; HSE data analysis; emergency response planning |
| Economist | Business/investment opportunity identification and evaluation; domestic/global economic monitoring; due diligence for ventures; overseas regulatory/compliance coordination; stakeholder relationship management; risk-weighted portfolio management; briefing papers and presentations for Management/Government | Econometric software; SWOT/trend analysis; financial modelling; E&P sector regulatory knowledge |
Oil India Limited Recruitment 2026 - Pay, Benefits and Service Conditions
Oil India Limited offers an Industrial DA pattern salary structure along with a comprehensive benefits package for selected candidates.
| Benefit / Condition | Details |
|---|---|
| Basic Pay Scale – Grade D | Rs. 90,000–2,40,000 (Starting Basic Pay: Rs. 90,000); Approx. Gross ~Rs. 1,70,000/month |
| Basic Pay Scale – Grade E/F | Rs. 1,00,000–2,60,000 (Starting Basic Pay: Rs. 1,00,000); Approx. Gross ~Rs. 2,00,000/month |
| Dearness Allowance | Industrial pattern DA |
| Accommodation | HRA or Company leased/self-lease accommodation as per rules |
| Medical Benefits | Free medical benefits for self and dependents |
| Retirement Benefits | Gratuity, Provident Fund; Post-Retirement Medical Benefits (PRMB) under Defined Contributory Scheme for those superannuating after minimum 20 years of continuous service in OIL/any other CPSE/Govt. |
| Loans | House Building Loan, Vehicle Loan as per Company rules |
| Insurance | Group Insurance |
| Probation Period | 01 Year - confirmation in writing after successful completion |
| Posting | Primarily Field HQ, Duliajan, Assam; transferable to any OIL operational area/office |
| Interview Travel Reimbursement (Grade D/E) | To-and-fro AC-II Tier rail fare (base fare only, excluding Premier Trains) from nearest railway station to interview venue; economy class air fare for travel within Northeast region and up to Kolkata on production of tickets and boarding passes |
| Interview Travel Reimbursement (Grade F) | Economy class air fare on production of tickets and boarding passes |
Who should NOT apply for Oil India Limited Recruitment 2026?
- Candidates whose post-qualification work experience does not meet the minimum 09 years (or 13/17 years for Economist Grade E/F) as on 28-06-2026 - even one day short disqualifies.
- Candidates whose experience has been acquired through academic, research, fellowship, JRF/SRF, PhD scholar, project-based, consultancy, internship, apprenticeship or part-time/ad-hoc roles - all such experience is explicitly excluded from "Post Qualification Relevant Work Experience" under this notification.
- Candidates applying for Deputy Chief Geophysicist (GEOP-04) with a PG in Computational Seismology or similar excluded streams - the notification specifically disqualifies such qualifications.
- Private sector candidates from companies with an annual turnover of less than Rs. 500 Crores - they are not eligible under OIL's experience recognition policy.
- Candidates in regular Government/PSU employment who do not have minimum 2 years of service in the next lower pay scale equivalent as prescribed in Table-III of the notification - they will be screened out at document verification.
- Candidates whose educational qualification nomenclature does not exactly match what is prescribed - OIL has explicitly stated that no variation in qualification nomenclature will be accepted.
- Candidates who cannot produce NOC from their current Government/PSU employer at the time of Personal Interview - without NOC they will not be allowed to appear for the interview and travel fares will not be reimbursed.
- Candidates unable to pass Pre-Employment Medical Examination (PEME) as per OIL's physical fitness standards - final appointment will be cancelled if declared medically unfit.
- Candidates whose percentage is arrived at by rounding off - OIL explicitly states rounding off of percentage is not allowed for eligibility determination.
Common Mistakes / What to Check Before Applying Oil India Limited Recruitment 2026?
- Not uploading a separate document detailing roles and responsibilities for each employment claimed - beyond the experience certificate, OIL mandates a separate role/responsibility document from each employer; missing this leads to rejection of experience claim.
- Uploading only an offer letter for past employment without also submitting two mandatory supporting documents from the prescribed list (last pay slip, increment letter, promotion order, PF statement, or appointment letter) - non-submission of both supporting documents can lead to rejection of candidature.
- Claiming CGPA as percentage without converting to percentage as per university/institute norms - CGPA must be converted and the equivalent percentage clearly mentioned; rounding off is not permitted.
- Using the same email ID or mobile number as another candidate - the same email/mobile cannot be shared between candidates; duplicate details will cause registration failure.
- Submitting multiple applications and not ensuring the one with the highest Application Sequence Number is complete - OIL will only process the application with the highest sequence number for each post.
- Uploading documents exceeding 5 MB per file or 200 MB total - applications with oversized attachments may face technical rejection.
- Not applying for each post separately - candidates eligible for multiple posts must register and submit separate applications for each post.
- Candidates applying for Economist post not specifying the Grade (D/E/F) they are applying for clearly - eligibility and experience requirements differ for each grade and applications are scrutinized accordingly.
- OBC candidates submitting an outdated Non-Creamy Layer certificate - the NCL certificate must clearly state that the candidate does not belong to the creamy layer as defined by Government of India for Central Government services; an old or vague certificate will not be accepted.
- Being misled by fraudulent job offers - OIL has specifically warned that unscrupulous individuals are issuing fake appointment letters; all genuine communications come only from the official OIL website and registered email ID.
How to Apply for Oil India Limited Recruitment 2026
Candidates must apply online only through the OIL website. No other mode of application will be accepted. Printouts of online applications should NOT be sent to OIL by post or hand.
Step I – Sign Up / Registration: Visit https://www.oil-india.com/advertisement-list and click on "Advertisement for Recruitment of Officers in Grade D/E/F in OIL." Select the post, fill in personal details, valid email ID and mobile number. Complete OTP authentication. Note down the Application Number and password received on registered email/mobile.
Step II – Complete Application Form: Fill in Basic Details, Address, Qualification Details, Eligibility Details, Experience Details. Upload photo, signature and scanned certificates. Click "Submit" to finalize.
Documents to be Uploaded Online:
- Recent passport size colour photograph (jpg/jpeg/PNG format, not older than 3 weeks)
- Signature on white paper with black ink pen (jpg/jpeg/PNG format)
- Birth Certificate or Matriculation/10th Admit Card/Pass Certificate/Marksheet showing date of birth - no other document accepted for age proof
- Degree/Diploma certificates and mark sheets for all academic years (or provisional certificate if degree not yet issued)
- Experience Letter/Service Certificate from each employer on official letterhead (with name, designation, dates of joining and relieving)
- Separate document from each employer explicitly detailing roles and responsibilities performed
- Any two supporting documents per employment from the prescribed list: last pay slip, annual increment letter, promotion/transfer order, PF statement, or offer/appointment letter (for past employment); or identity card, increment letter, promotion/transfer order, PF statement (for current employment)
- Caste certificate (SC/ST/OBC-NCL) in Government of India prescribed format, if applicable
- Valid NCL certificate for OBC candidates, if applicable
- Valid EWS Income & Assets Certificate in Government of India format, if applicable
- Valid Disability Certificate (min. 40% disability) for PwBD candidates, if applicable
- Valid Discharge Book/Service and Release Certificate for Ex-Servicemen, if applicable
- Domicile Certificate (J&K, 1980–1989) for age relaxation claim, if applicable
- CGPA/Grade to percentage conversion certificate from university/institute, if marks are in CGPA/Grade format
- NOC from current employer (for Government/PSU employees - mandatory at PI stage)
Apply Online at: https://www.oil-india.com/advertisement-list
Important Instructions for Oil India Limited Recruitment 2026 Candidates
- Only Indian nationals are eligible to apply.
- The Cut-off date for all matters - age, experience, qualification - is 28-06-2026.
- Mere possession of minimum qualifications does not entitle candidates to be called for PI; shortlisting criteria may be raised if the number of applications is large.
- Candidates in permanent Government/PSU employment must produce a valid NOC from their employer at the time of PI - without this they will not be permitted to appear and travel fares will not be reimbursed.
- Appointment of provisionally selected candidates is subject to medical fitness as per OIL's Physical Fitness criteria; candidature is cancelled if declared unfit by OIL's Medical Board.
- Provisionally selected candidates will serve a probationary period of 1 year and will be confirmed in writing after successful completion.
- Any false information or document at any stage - even after joining - will result in cancellation/termination and blacklisting from all future OIL recruitments.
- All future announcements for this vacancy will be published only on www.oil-india.com - not on any other website or medium.
- OIL has warned all candidates about fraudulent fake appointment letters being circulated by unscrupulous elements - OIL does not authorize any person/organization outside OIL to offer jobs on its behalf.
- Any dispute regarding recruitment under this advertisement will be under the jurisdiction of Dibrugarh District Court only.
- Canvassing in any form will result in cancellation of candidature.
- OIL strives to have a gender-balanced workforce and women candidates are encouraged to apply.
Oil India Limited Recruitment 2026 - Important Links
- Apply Online: Click here
- Official Notification PDF: Click here
- Official Website: Click here
- Join Arattai Channel: Click Here
- Join Telegram Channel: Click Here
- Join WhatsApp Channel: Click Here
- Sarkari Result: Click Here
- Download Mobile App: Click Here
