PT Pertamina (Persero) is the national oil company of Indonesia, and also the largest company in Indonesia. It is the parent holding company of all the many Pertamina subsidiary companies.

As an integrated oil company, Pertamina involves in oil and gas exploration and production, refining and petrochemicals, gas distribution through pipelines, distribution of fuels and lube oil to every corner of the land. 

On the upstream side, Pertamina owns many oil fields and work areas and has vast and expansive oil exploration and production operations in Indonesia. It also has oil and gas interests in several other countries.

Pertamina’s upstream oil and gas interests are under the wings of PT Pertamina Hulu Energi (PHE). It is the sub-holding company of PT Pertamina (Persero) in charge of its entire upstream oil and gas assets and operations.

The assets include oil and gas assets that Pertamina itself develops, assets it acquired from BPM (Bataafse Petroleum Maatschappij), assets it acquired from international companies upon the expiry of their production sharing contracts, and its exploration work areas.

As Pertamina’s oil fields are located in many islands of Indonesia covering a vast area of more than 113,000 Km2, its assets and operations are divided into five regions. Each region is further divided into zones.

Here are the five regions including the zones under each region and their leadership teams.

REGION 1- Sumatera

Pertamina’s assets in Sumatera fall under Region 1 and they are managed under PT Pertamina Hulu Rokan (PHR).

Consisting of four zones, Pertamina Hulu Rokan manages the following assets:

• In Zone 1 – North Sumatera Offshore (NSO), North Sumatera Basin (NSB), Rantau, Pangkalan Susu, West Glagah Kambuna, Siak, Kampar, Lirik, Jambi, Jambi Merang, Jabung
• In Zone 2 – North Rokan (Rokan Utara)
• In Zone 3 – South Rokan (Rokan Selatan)
• In Zone 4 – Ogan Komering, Raja Tempirai, Ramba, Corridor, Prabumulih, Limau, Pendopo, Adera 

Here is the current leadership team stewarding Pertamina’s exploration and production activities in Region 1.

• Novy Hendri – VP Exploration
• Tri Sasongko – VP Development and Drilling
• Junizar Harman – VP Operation and Production
• Saptiadi Nugroho – VP Business Support
• Ani Surakhman – General Manager of Zone 1
• Ahmad Miftah – General Manager of Zone 4

REGION 2 – Java and Natuna

Region 2 covers Pertamina upstream activities in West Java and the Natuna Sea, and they are managed under PT Pertamina Eksplorasi dan Produksi (PEP).

Here are the zones in Region 2 and the assets under each zone.

• Zone 5 – Offshore North West Java (PHE ONWJ), Abar, Anggursi
• Zone 6 – Offshore South East Sumatera (PHE OSES)
• Zone 7 – Tambun, Subang, Jatibarang, East Natuna, The Natuna Sea Block A

Here is the new leadership team of Region 2.

• Muharram Jaya – VP Exploration
• Merry Luciawaty – VP Development and Drilling
• Wisnu Hindadari – VP Operation and Productions
• Bongbongan Tampubolon – VP Business Support
• Achmad Agus Miftakhurrohman – General Manager of Zone 5
• Cosmas Supriatna – General Manager of Zone 6
• Astri Pujianto – General Manager of Zone 7

REGION 3 – Kalimantan

Region 3 assets and operations are located in Kalimantan, and PT Pertamina Hulu Indonesia (PHI) is the operation holding company of Pertamina in Region 3.

Here are the zones in Region 3 and the assets in each zone:

• Zone 8 – Pertamina Hulu Mahakam (PHM), Pertamina West Ganal (PHWG), East Sepinggan
• Zone 9 – Pertamina Hulu Sanga Sanga (PHSS), Sangata, Maratua, Tanjung
• Zone 10 – Pertamina Hulu Kalimantan Timur (PHKT), Bunyu, Tarakan, Nunukan, East Ambalat, Simenggaris, Ambalat, Bukat

Here is the leadership team supervising Pertamina’s exploration and production activities in Region 3.

• Bayu Giriansyah – VP Exploration
• Arief Prasetyo Handoyo – VP Development and Drilling
• Rachmad Wibowo – VP Production
• Satya Nugraha – VP Business Support
• Agus Amperianto – General Manager of Zone 8 
• Andri Haribowo – General manager of Zone 9
• Raam Krisna – General Manager of Zone 10

REGION 4 – East Java and Eastern Part of Indonesia

Pertamina’s oil and assets located in the eastern part of Indonesia and East Java are under Region 4.

PT Pertamina Eksplorasi dan Produksi Cepu (PEPC) is the operation holding company in charge of Region 4.

Here are the zones in Region 4 and their assets:

• Zone 11 – Alas Dara Kemuning (PEPC ADK), Cepu, West Madura Offshore (PHE WMO), Randugunting, Sukowati, Poleng, Tuban East Java
• Zone 12 – Jambaran Tiung Biru (JTB), Banyu Urip
• Zone 13 – Donggi Matindok, Senoro Tolidi, Makassar Strait
• Zone 14 – Papua, Salawati, Kepala Burung, Babar Selaru, Semai

Here is the current leadership team of Region 4.

• Ali Sundja – VP Development and Drilling
• Muhamad Arifin – VP Operation and Production
• Fransiono Lazarus – VP Business Support
• Dedy Syam – General Manager of Zone 11
• Iman Nur Akbar – General Manager of Zone 13
• Djudjuwanto General Manager of Zona 14

REGION 5 – International   

Pertamina also has oil and gas interests in several countries outside Indonesia. Its international E&P operations and assets fall under Region 5 and they are under the management of PT Pertamina International Eksplorasi dan Produksi (PIEP).

Here are the zones of Region 5 and their locations:

• Zone 15 – Algeria
• Zone 16 – Iraq
• Zone 17 – Malaysia  

Here is the current leadership team supervising Pertamina’s international exploration and production activities.

• Fuji Koesumadewi – VP Exploration
• Yosi Hiroshiadi – VP Development and Drilling 
• Charles P. Sialagan – VP Operation and Production
• Ria Noveria – VP Business Support
• Edwil Suzandi – Country Manager in Algeria

This article is adapted by Jamin Djuang – Chief Learning Officer of LDI Training – from information published by Pertamina and various other sources.