Lead TrainerField experience brought into the classroom
Subash Rajan
Lead Trainer · Senior Drilling & P&A Supervisor
Subash Rajan is Sura Energy Drilling's Lead Trainer and a Senior Drilling and Plug & Abandonment (P&A) Supervisor. He brings 28 years of multinational onshore and offshore experience — most of them with Schlumberger (1996–2020), followed by supervisory roles for PETRONAS, Halliburton and SLB — and has delivered more than 100 courses and workshops.
He began his oilfield career in 1994 through the PETRONAS Apprentice Program at ILPP Batu Rakit (now INSTEP), later earning an HND in Mechatronics from Liverpool John Moores University, a Bachelor of Engineering in Mechanical and Offshore Engineering from Robert Gordon University, Aberdeen, and a specialised certification in Plug and Abandonment from the University of Aberdeen.
His field career spans MWD/LWD and directional drilling services, real-time drilling support for up to 20 rigs across South East Asia and Australia, wellsite leadership for Saudi Aramco and QGC (Australia), and offshore drilling and P&A supervision for PETRONAS in Sarawak and Peninsular Malaysia — including HPHT, PMCD, anti-collision and H₂S well environments.
As a trainer he is engaged by oil and gas companies and academies to deliver stuck pipe prevention, jar workshops, wellbore problems, hole cleaning and HPHT courses to rig crews on site and via virtual platforms — for Velesto Energy, Sapura Energy, PETRONAS, PETROS Sarawak, PTTEP Malaysia and international drilling contractors.
Today he coaches the next generation at Velesto Academy at INSTEP — the same institution where his own career began — and spoke to school leavers about energy-sector careers at the launch of TVET Negara 2026 2.0 in Putrajaya.
- HRD Corp-accredited trainer
- IADC-certified instructor
- IWCF Surface & Subsea well control certified (Velesto Energy Academy)
- Personnel Assessment & Verification (PPV), Ministry of Human Resources — OGP Drilling Operations (OG-012-3-2011)
- Adjunct Lecturer, Petroleum Engineering — Universiti Teknologi PETRONAS (Sep 2026 – Sep 2028)
- 60+ professional licences & certifications
Career highlights
Adjunct Lecturer, Petroleum Engineering
Universiti Teknologi PETRONAS · 2026 – present
Personnel Assessment & Verification (PPV)
Ministry of Human Resources · 2026 – present
Technical Corporate Trainer · HRD Corp Accredited
Freelance — Velesto, Sapura, PETRONAS, PETROS, PTTEP · 2020 – present
Senior Drilling & P&A Supervisor
PETRONAS (contract) — Sarawak & Peninsular Malaysia offshore · 2023 – 2025
Integrated Service Project Offshore Supervisor
SLB (contract) — Shell Timi, Sarawak · 2023
Technical Training Consultant
Aberdeen Drilling School · 2020 – 2023
Drilling Supervisor — iRDC Kasawari
Halliburton Consulting (contract) — PETRONAS Carigali · 2022
Senior Drilling Supervisor — Bokor-F
PETRONAS (contract) — Sarawak · 2021 – 2022
Earlier career · Schlumberger 1996 – 2020
Well Site Leader · Drilling/Completions Supervisor
Schlumberger — Saudi Aramco · 2016 – 2020
Wellsite HSE Project Advisor · Asst. Well Site Supervisor
Schlumberger — PETRONAS Carigali · 2015 – 2016
Wellsite Drilling/Completions Supervisor
Schlumberger — QGC, Australia · 2013 – 2015
D&M Senior Operations Real Time Support Engineer
Schlumberger — SEA, Australia & Qatar · 2008 – 2013
D&M Engineer in Charge · Operations Coordinator
Schlumberger — Thailand · 2007 – 2008
Drilling Services Engineer (MWD/LWD & DD)
Schlumberger — Brunei, Malaysia, India, Philippines, Saudi Arabia, Kuwait · 2002 – 2007
Anadrill MWD/LWD/DD Lead Mechanical Technician
Schlumberger — Malaysia, Singapore & Japan · 1996 – 1999
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Years field
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Courses delivered
IADC
Certified instructor









