The Famous Duri Oil Field

Duri to Dumai Road Construction in 1958

Eighty years ago, CALTEX discovered the huge Duri oil field in the Rokan block in Riau, Sumatera.

Oil was found at a shallow depth of 400 feet when CALTEX began drilling its exploration wells in 1941. After CALTEX managed to obtain the approval from the newly formed government of Indonesia to operate in the Rokan block under a work contract scheme, oil production began in 1954.

The giant Duri field – 10 km wide and 18 km long – is one of the many oil fields discovered in the Rokan block. Minas is another giant oil field discovered in this block.

Oil production peaked at 65,000 BOPD in the 1960s.

Due to the high viscosity of the low gravity oil, to enhance the production, the steam injection was introduced in 1985.

The Duri steam flood project was so successful that it became one of the largest and the best steam floods in the world.

Thanks to the successful steam injection, Duri oil production increased significantly to 185,000 BOPD.

After 30 years of the steam flood, the production had declined to about 50,000 BOPD by 2017.

With more than 2.6 billion barrels of cumulative oil produced, the giant Duri field is still producing today.

Chevron will hand over the operatorship of the Duri field and the Rokan block to Pertamina in August 2021.

Eight Largest Oil Lifting Terminals in Indonesia

oil storage tanks
Oil Storage Tanks

In 2019, the average daily crude oil production in Indonesia was 746,000 barrels.

Here are the eight largest crude oil lifting terminals in Indonesia in 2019 according to SKK Migas of Indonesia.

  1. WIDURI MARINE TERMINAL

Widuri Marine Terminal is operated by Pertamina Hulu Energi OSES which operates the oil fields located in the Offshore South East Sumatera contract area.

The South East Sumatera contract area was initially awarded to IIAPCO in 1968. Many big oil fields were discovered in this block such as Banuwati, Cinta, Intan, Widuri and Zelda.

Crude oil produced from these fields were stored in the Lentera Bangsa FSO – a floating, storage, and offloading vessel – and then offloaded into oil tankers.

The operatorship of this contract area changed hands many times during its 50 years of operation. Previous operators include IIAPCO, Maxus, Repsol, and CNOOC.

The average daily crude oil lifting volume of the Widuri Marine Terminal was 8501 BOPD.

  1. SENORO MARINE TERMINAL

Senoro Marine Terminal is operated by JOB Pertamina  Medco Tomori Sulawesi which is a joint operating body consisting of Pertamina Hulu Energi, Medco E&P and Tomori E&P.

JOB Pertamina Medco Tomori Sulawesi operating in the Tomori-Toili Block located in Central Sulawesi produces gas and condensate from the Senoro gas field and crude oil from the Tiaka oil field.

The gas from the Senoro field is processed into LNG by the Donggi-Senoro LNG plant which started operation in August 2015.

The average daily lifting volume at Senoro Marine Terminal was 14,857 BOPD

  1. TUBAN MARINE TERMINAL

Tuban Marine Terminal located in East Java is operated by PT Pertamina EP. The terminal handles the lifting of crude oil that Pertamina EP produces from the Tuban block. Before 29 February 2018, the Tuban block was operated under Joint Operating Body (JOB) Pertamina Petrochina East Java.

PT Pertamina EP, established on 17 September 2005, came under the supervision of BPMIGAS on 17 September 2005. BPMIGAS became SKK Migas on 13 November 2012.

On average, 16358 BOPD was lifted at the Tuban Marine Terminal.

  1. ARDJUNA TERMINAL

The Ardjuna oil terminal is operated by Pertamina Hulu Energi ONWJ which operates the oil and gas fields located in the Offshore North West Java work area.

The huge Ardjuna oil field was initially discovered by ARCO after it signed the PSC contract in 1971. ARCO later became BP West Java.  Pertamina Hulu Energi ONWJ became the operator of the Ardjuna field in July 2009.

The average crude oil lifting volume from the Ardjuna terminal was 25626 BOPD.

  1. SENIPAH MARINE TERMINAL

Senipah Marine terminal is operated by Pertamina Hulu Mahakam. The terminal was previously operated by Total Indonesie who discovered several big oil and gas fields – Bekapai, Handil, Tunu, Peciko, Sisi, Tunu –  in the Offshore Mahakam block.

On average, 31539 BOPD was lifted at The Senipah Marine terminal.

  1. RU PP7

The RU PP7 terminal is located in the Riau province in Sumatera and operated by Chevron Pacific Indonesia.

The average daily lifting volume at RU PP7 Terminal was 62,337 BOPD.

  1. DUMAI TERMINAL

The Dumai terminal is located in the Riau province in Sumatera and operated by Chevron Pacific Indonesia who holds the operatorship of the prolific Rokan PSC which will soon expire in 2021.

Chevron Pacific Indonesia, also known as CPI, discovered two super-giant oilfields: the Duri field in 1941 and Minas in 1944. Subsequently, CPI continued to discover many smaller oil fields in the Rokan work area.

Due to its low gravity oil, the Duri field underwent steam flooding in 1985 to enhance the recovery of its heavy oil. The Duri field steam flood project is one of the largest in the world.

The average daily lifting volume at the Dumai Terminal was 116,555 BOPD.

  1. BANYU URIP MARINE TERMINAL

At an average daily crude oil lifting volume of 200, 937 barrels, the Banyu Urip Marine Terminal is currently the top crude oil lifting terminal in Indonesia. It handles the lifting of the crude oil produced by Mobil Cepu from the onshore Banyu Urip field located in the Cepu Block contract area.

After the crude is processed in the central processing facilities (CPF) located at the center of the oil field, the oil is transported through a 72 KM long pipeline to the coast of Tuban, and then through a 23 KM long subsea pipeline to the FSO (Floating, Storage and Offloading) vessel. The FSO is named FSO Gagak Rimang.

The crude oil from the Banyu Urip field is lifted by oil tankers from FSO Gagak Rimang for transport to domestic and international refineries. The FSO has storage capacity for 2 million barrels of crude oil.

This article is written by Jamin Djuang based on the information published by SKK Migas. He is the founder of LDI Training which provides oil and gas training and the published author of The Story of Oil and Gas.