Petroleum Engineering Summer School

Petroleum Engineering Summer School The mission is the exchange of knowledge at advance academic and expert level, offering the extensive possibilities for international collaboration.

Petroleum Engineering Summer School (PESS) has been operating within the academic program for advanced studies of the Inter-University Centre Dubrovnik (IUC) for more than twenty five years. The interactive seminars are organized by the Executive Directors of the PESS, professors from the Petroleum Engineering Department of the Faculty of Mining, Geology & Petroleum Engineering (www.rgn.hr), Unive

rsity of Zagreb, and co-directors, distinguished professors from Croatian universities and abroad and professionals
Petroleum Engineering Summer School (PESS) is organized every year in June with two interactive seminars or workshops, each lasting five days, and it is held in the IUC building (www.iuc.hr), in the historic city of Dubrovnik. The topics covered by Petroleum Engineering Summer School are contemporary technical, technological, environmental and economic issues in field of petroleum industry and energy industry in general.

The second week of PESS 2026 has come to a close — five intensive days dedicated to geothermal energy in Dubrovnik.Works...
19/06/2026

The second week of PESS 2026 has come to a close — five intensive days dedicated to geothermal energy in Dubrovnik.

Workshop 60 — Geothermal Energy Exploration and Production ran from June 15th to 19th at IUC Dubrovnik, bringing together international lecturers and participants across many different topics.

Sincere appreciation goes to all participants, lecturers and contributors who made this an inspiring academic environment.

Special thanks to the PESS leadership — Ms. Daria Karasalihović Sedlar (Executive Director) and Mr. Ivan Smajla (Chair of the Organizing Committee) — and to all session chairs who guided the discussions each day.

A heartfelt thank you also goes to SPE Croatian Section, Spe Zagreb Student Chapter and SPE International for their continuous support of the Petroleum Engineering Summer School over the years, and to IUC Dubrovnik for being our home throughout the week.

This week would not be possible without the support from our sponsors: INA · OMV · Levare · LNG Hrvatska · CHA · MET · JANAF · ENSULX · Vis Viva GSM · Fika Eco · Plinacro · Geoda
We would also like to thank our supporters: HUNIG · Energetika Marketing · The Chinese University of Hong Kong, Shenzhen

And the last thanks goes to our co-organizers: PSP and RGN

📸 The full photo and video archive from Workshop 60 is available here: https://drive.google.com/drive/folders/1boNtmLQ2UA9pWdpoViGfkGLOJtmOL9NC

📄 Lecture presentations are available here: https://drive.google.com/drive/folders/1_9Rtfssg6gaeMibhrkZTRNWaLmn4piDW

With Workshop 60, the 39th edition of PESS officially comes to a close.

Thank you to everyone who was part of it — see you again in Dubrovnik next year.

SummerSchool

14/06/2026

The voices behind the first week of PESS 2026.

From June 8th to 12th, Workshop 59A — Drilling, Production & Reservoir Engineering and Workshop 59B — Natural Gas/Hydrogen Market & Emission Management ran in parallel at IUC Dubrovnik.

A heartfelt thank you to PESS Executive Director Ms. Daria Karasalihovic Sedlar and Chair of the Organizing Committee Mr. Ivan Smajla for leading this edition of PESS.

To the lecturers who shared their knowledge and expertise across the week:

Workshop 59A
Vesna Zuzul (Croatian Ministry of Economy) · Emils Lagzdins (IOGP) · Catarina Santos (IOGP) · Lucy Coombe (IOGP) · Dr. Jeff Southwick (JSouth Energy LLC / SNF Consultant) · Alina Ospanova (OMV) · Sayed H. (Halliburton) · Brett Reilly (Halliburton) · Emma Al-Baqir & Ilia Bukhalov (Halliburton) · Simon Fleet (Halliburton) · Cvetic Bojan (Levare Service Serbia) · Dr. Miso Solesa (CMS Prodex)

Workshop 59B
Dr. Andrej Pustisek (HFT Stuttgart) · Dr. Richard Pratt (Precision LNG Consulting) · Ronald Preklushaj (Chart Industries) · Dario Ferenčaba (LNG Hrvatska)

To the session chairs who guided the discussions each day:
Dr. Daria Karasalihovic Sedlar · Dr. Domagoj Vulin · Dr. Petar Mijić · Dr. Igor Medved · Filip Milešević · Dr. Richard Pratt · Ronald Preklushaj · Dr. Andrej Pustisek · Dr. Ivan Smajla

A special thank you also goes to SPE Croatian Section, University of Zagreb SPE Student Chapter and Society of Petroleum Engineers International for their continuous support over the years, Inter University Centre (IUC) Dubrovnik for hosting us for the 39th consecutive year, and RGN fakultet with Podzemno skladiste plina d.o.o. for coorganizing PESS year after year.

🎥 Full photo and video archive from Workshops 59A and 59B: https://shorturl.at/EH50G

📄 Lecture presentations: https://shorturl.at/nxi7u

Next up: Workshop 60 — Geothermal Energy Exploration and Production, starting June 15th at IUC Dubrovnik.

SummerSchool

.The first week of PESS 2026 has come to a close — five intensive days of in-depth discussions, technical exchange and i...
13/06/2026

.

The first week of PESS 2026 has come to a close — five intensive days of in-depth discussions, technical exchange and inspiring conversations in Dubrovnik.

Workshop 59A — Drilling, Production & Reservoir Engineering and Workshop 59B — Natural Gas/Hydrogen Market & Emission Management ran in parallel from June 8th to 12th, bringing together international lecturers and participants across regulatory, technical and commercial perspectives.

Sincere appreciation goes to all participants, lecturers and contributors who made this an inspiring academic environment.

Special thanks to the PESS leadership — Ms. Daria Karasalihović Sedlar (Executive Director) and Mr. Ivan Smajla (Chair of the Organizing Committee) — and to all session chairs who guided the discussions each day.

A heartfelt thank you also goes to SPE Croatian Section, SPE Zagreb student Section and SPE International for their continuous support of the Petroleum Engineering Summer School over the years, and to Inter University Centre Dubrovnik for being our home throughout the week.

This week would not be possible without the support from our sponsors: INA · OMV · Levare · LNG Hrvatska · CHA · MET · JANAF · ENSULX · Vis Viva GSM · Fika Eco · Plinacro · Geoda

We would also like to thank our supporters: HUNIG · Energetika Marketing · The Chinese University of Hong Kong, Shenzhen

And the last thanks goes to our co-organizers: PSP and RGN fakultet

📸 The full photo and video archive from Workshops 59A and 59B is available here: https://shorturl.at/EH50G

📄 Lecture presentations are available here: https://shorturl.at/nxi7u

Workshop 60 of the Petroleum Engineering Summer School returns to Dubrovnik this June with a comprehensive five-day prog...
05/06/2026

Workshop 60 of the Petroleum Engineering Summer School returns to Dubrovnik this June with a comprehensive five-day programme on Geothermal Energy Exploration and Production.

18 lecturers and contributors from 15 organisations cover the field's most pressing topics — from geothermal exploration and deep well drilling to underground thermal storage, district heating and next-generation geothermal technologies.

Geothermal Exploration & Resource Assessment: Jadranka Leško (Croatian Ministry of Economy) Dr. Tomislav Kurevija (UNIZG RGNF)
EU Geothermal Policy & Markets: Emil Martini (European Geothermal Energy Council)
Industry Case Studies & Lessons Learned: Boris Vidoš (ENNA Geo) Andrej Pleša (INA) Croatian Hydrocarbon Agency Željka Sladović (GEODA) Tomislav Krsnik (Vis Viva GSM) Levare Service Serbia
Deep Well Drilling & Well Construction: Dr. Damir Zadravec (Fika Eco) Georg Ripperger (OMV)
Underground Thermal Energy Storage: Dr. Keita Yoshioka & Dr. Chaofan Chen (Montanuniversität Leoben) Dr. Marija Macenić (UNIZG RGNF)
District Heating Integration: Dr. Goran Krajačić (UNIZG FSB)
Next-Generation Geothermal Technologies: Dr. Dongxu Ji (CUHK Shenzhen) Filip Milešević (UNIZG RGNF) Domenico Daprocida (E2E Energy Solutions)

Sincere appreciation goes to all participants, lecturers and contributors who make this an inspiring academic environment year after year — and to the session chairs (Dr. Daria Karasalihović Sedlar, Dr. Dongxu Ji, Dr. Karim El Sabeh, Emil Martini, Filip Milešević and Dr. Ivan Smajla) who guide the discussions across the week.

A special thank you goes to SPE Croatian Section and SPE International for their continuous support of the Petroleum Engineering Summer School over the years, and Inter University Centre Dubrovnik for hosting us for 39th consecutive year.

📄 Programme & registration: rgn-pess.com 📩 Questions: [email protected]

Workshop 59B of the Petroleum Engineering Summer School returns to Dubrovnik this June with a focused five-day programme...
04/06/2026

Workshop 59B of the Petroleum Engineering Summer School returns to Dubrovnik this June with a focused five-day programme on Natural Gas/Hydrogen Market & Emission Management.

7 lecturers from 6 organisations cover the field's most pressing topics — from EU methane regulation and carbon capture to natural gas markets, LNG projects and alternative marine fuels.

EU Methane Regulation: Vesna Žužul (Croatian Ministry of Economy) Emils Lagzdins (IOGP)
Carbon Removals, ETS & Carbon Capture: Catarina Santos (IOGP)
European Natural Gas Markets & Pricing: Dr. Andrej Pustišek (HFT Stuttgart)
LNG Shipping & Export Projects: Dr. Richard Pratt (Precision LNG Consulting)
Methane Emissions Management & LNG Capacity: Dario Ferenčaba (LNG Hrvatska)
Alternative Marine Fuels: Ronald Preklushaj (Chart Industries)

Sincere appreciation goes to all participants, lecturers and contributors who make this an inspiring academic environment year after year — and to the session chairs (Dr. Daria Karasalihović Sedlar, Dr. Richard Pratt, Ronald Preklushaj, Dr. Andrej Pustišek and Dr. Ivan Smajla) who guide the discussions across the week.

A special thank you goes to SPE Croatian Section and SPE International for their continuous support of the Petroleum Engineering Summer School over the years, and Inter University Centre Dubrovnik for hosting us for 39th consecutive year.

📄 Programme & registration: rgn-pess.com 📩 Questions: [email protected]

Workshop 59A of the Petroleum Engineering Summer School returns to Dubrovnik this June with a focused five-day programme...
03/06/2026

Workshop 59A of the Petroleum Engineering Summer School returns to Dubrovnik this June with a focused five-day programme on Drilling, Production & Reservoir Engineering.

13 lecturers from 7 organisations cover the field's most pressing topics — from chemical EOR and horizontal drilling to EU climate regulation, artificial lift and AI in production.

EU Methane Regulation & Climate Policy: Vesna Žužul (Croatian Ministry of Economy) Emils Lagzdins (IOGP) Catarina Santos (IOGP) Lucy Coombe (IOGP)
Chemical EOR & Polymer Flooding: Dr. Jeff Southwick (JSouth Energy LLC / SNF Consultant) Sayed Hashimi (Halliburton)
Horizontal Drilling: Alina Ospanova (OMV) Simon Fleet (Halliburton)
Multi-Stage Fracturing: Brett Reilly (Halliburton)
Methane Emission Mitigation: Emma Al-Baqir & Ilia Bukhalov (Halliburton)
Artificial Lift: Bojan Cvetić (Levare Service Serbia)
AI in Production: Dr. Mišo Soleša (CMS Prodex)

Sincere appreciation goes to all participants, lecturers and contributors who make this an inspiring academic environment year after year — and to the session chairs from UNIZG RGNF (Dr. Daria Karasalihović Sedlar, Dr. Ivan Smajla, Dr. Domagoj Vulin, Dr. Petar Mijić, Dr. Igor Medved and Filip Milešević) who guide the discussions across the week.
A special thank you goes to SPE Croatian Section and SPE International for their continuous support of the Petroleum Engineering Summer School over the years, and Inter University Centre Dubrovnik for hosting us for 39th consecutive year.

📄 Programme & registration: rgn-pess.com 📩 Questions: [email protected]

PESS 2026 brings together the full breadth of the energy sector — from regulators and operators to services, technology,...
30/05/2026

PESS 2026 brings together the full breadth of the energy sector — from regulators and operators to services, technology, digital solutions, consultants and academia.

This is what makes the Petroleum Engineering Summer School unique: a programme that follows the complete energy value chain, with lecturers who shape it every day in their own institutions and companies.

Across two weeks in Dubrovnik, participants will explore advanced technical content through an interdisciplinary approach grounded in academic excellence — combined with hands-on learning, high-level discussions and international networking that extends far beyond the lecture hall.

A special word of appreciation goes to SPE Zagreb Student Chapter and Society of Petroleum Engineers International for their continuous contribution to — their support has helped shape this Summer School into the international platform it is today.

📄 Full programme: rgn-pess.com
📩 Questions: [email protected]

Inter University Centre Dubrovnik Daria Karasalihović Sedlar Ivan Smajla

Behind every edition of the Petroleum Engineering Summer School stands nearly four decades of continuity.As PESS 2026 ap...
29/05/2026

Behind every edition of the Petroleum Engineering Summer School stands nearly four decades of continuity.

As PESS 2026 approaches, here is what this year's edition brings together:

39 years of tradition · 10+ countries represented · 40+ lecturers and contributors · 3 specialised workshops · 2 weeks of programme · 1 international platform.

These numbers reflect more than scale. They reflect decades of trust built between academia, industry and policy — and the people who return to Dubrovnik each year to share what they know and learn what's next.

None of it would be possible without the continued support of our partners across the energy industry: INA · OMV · Levare · LNG Croatia · Agencija za ugljikovodike · MET Group · JANAF · ENSOLX · VIS VIVA GSM · Fika Eco · Plinacro · GeoDa Consulting

Supported by: Croatian Association of Petroleum Engineers and Geologists, HUNIG · Energetika Marketing · The Chinese University of Hong Kong, Shenzhen.

Co-organised by: PSP


See you in Dubrovnik.

📄 Programme & registration: rgn-pess.com

📩 Questions: [email protected]

RGN fakultet, Inter University Centre Dubrovnik, Society of Petroleum Engineers, Daria Karasalihović Sedlar , Ivan Smajla

The 39th Annual Petroleum Engineering Summer School (PESS 2026) is coming soon!Organized by the Faculty of Mining, Geolo...
28/05/2026

The 39th Annual Petroleum Engineering Summer School (PESS 2026) is coming soon!

Organized by the Faculty of Mining, Geology and Petroleum Engineering of the University of Zagreb, PESS continues to serve as a respected international platform for the exchange of advanced academic and professional knowledge — bringing together engineers, researchers, students, and industry professionals from across the energy sector.

This year's edition offers three specialised workshops addressing contemporary issues and challenges in the oil & gas and geothermal industries:

– Workshop 59A (June 8–12, 2026): Drilling, Production & Reservoir Engineering

– Workshop 59B (June 8–12, 2026): Natural Gas / Hydrogen Market and Emission Management

– Workshop 60 (June 15–19, 2026): Geothermal Energy Exploration and Production

The Summer School will once again be held at the Inter University Centre Dubrovnik, with support provided by SPE. Accommodation at the IUC Dormitory is limited and available on a first-come, first-served basis.


Registrations are closing soon.

📄 Preliminary programmes: https://rgn-pess.com/workshops/

📝 Registration: https://rgn-pess.com/registration-fee/

🛏️ Accommodation: https://rgn-pess.com/travel-accomodation/

📩 Questions & accommodation requests: [email protected]


We look forward to welcoming you in Dubrovnik in June 2026.

Daria Karasalihović Sedlar , Ivan Smajla

Address

Pierottijeva Ulica 6
Zagreb
10000

Opening Hours

Monday 08:00 - 16:00
Tuesday 08:00 - 16:00
Wednesday 08:00 - 16:00
Thursday 08:00 - 16:00
Friday 08:00 - 16:00

Telephone

+38515535829

Alerts

Be the first to know and let us send you an email when Petroleum Engineering Summer School posts news and promotions. Your email address will not be used for any other purpose, and you can unsubscribe at any time.

Contact The Organization

Send a message to Petroleum Engineering Summer School:

Shortcuts

Share