Deepwater Jangkrik Complex Development Projects at Muara Bakau in Offshore Indonesia

jangkrik complex at muara bakau psc

Jangkrik field and Jangkrik North East field in Muara Bakau working area

Jangkrik fields are located in the Muara Bakau working area, in Makassar Straits offshore Kalimantan, Indonesia, approximately 44 miles (70 kilometers) from Balikpapan.

The natural gas reservoir lies by 2449 m depth in 425m of water depth. (source:

Jangkrik Complex Jangkrik
Operator: Eni
Water Depth: 120 m / 396 ft
Region: Asia – SouthEast
Country: Indonesia
  • WD @ FPU 120 m.
  • WD @ Subsea 500m.

ENI Indonesia Limited is becoming “kontraktor kontrak kerja sama” (KKKS) or production sharing contract (PSC).

In the Muara Bakau natural gas field, the working interests within the joint venture are shared between :

Eni from Italy 55% who is the operator

GDF-Suez from France 45%


Eni discovered hydrocarbons on Jangkrik on April 6, 2009, which was drilled in 1,312 feet (400 meter) of water by the Jack Bates semisub.



During 2011, the gas development plan for the Jangkrik (55% Eni) operated project was approved by the country’s competent authorities.

Operations for developing the offshore area of the Jangkrik field include

  • drilling production wells,
  • installing a floating production unit for treating the gas and condensates and
  • constructing transportation facilities to connect the field to the existing onshore network in order to transport gas to the Bontang gas plant, while the condensates will be transported to existing treatment plants in the area.


During 2011, exploration operations produced positive results with the Jangkrik North East gas discovery in the Muara Bakau block (55% Eni, which is also the operator), in the Kutei Basin.

More specifically, in July 2011 Eni discovered new hydrocarbon deposits in the Indonesian offshore area when it successfully drilled an exploration well in the Jangkrik North East area, situated in the Muara Bakau block, approximately 15 kilometres from the Jangkrik field.

Deepwater EPCI Projects and Offshore Drilling

  • EPCI-1, for the construction and installation of barge floating production unit (FPU),
  • EPCI-2, to build onshore gas reception facilities, pipelines, and supporting equipment.
  • EPCI-3, to build subsea production systems, control systems, and other equipment, (scope of supply includes subsea trees, manifolds, jumpers and connection systems, umbilicals, tooling and associated topside and subsea controls systems.)

EPCI-1 project bidding ($1.1 billion) was won by a consortium of

  • PT Saipem Indonesia,
  • PT Tripatra Engineers and Construction,
  • PT Chiyoda International Indonesia, and
  • Hyundai Heavy Industries Co.. Ltd.

Floating production unit will be 200 meters long and weight 20,000 t with 360 million cf/d capacity.

EPCI-2 project bidding was won by a consortium of

  • PT Technip Indonesia – Technip Geoproduction (M) Sdn. Bhd.

Gas and condensates pipelines should be 86 kilometers long offshore and 6 kilometers long onshore.

EPCI-3 project bidding ($ 720 million)  was won by

  • PT FMC Santana Petroleum Equipment Indonesia

In addition to implementing the above EPCI projects, ENI as PSC will also implement offshore drilling for 11 development wells.

Investment and Expected Revenue

The projects have an estimated value of U.S. $ 4.13 billion.

The projects are expected to contribute up to U.S. $ 5 billion in state revenue.

Gas Production Targets

The Government of Indonesia through Indonesian oil and gas regulator SKK MIGAS targeting the Jangkrik field and Jangkrik North East field can produce 450 million standard cubic feet of gas per day (MMSCFD).

Start production in early 2017, and production peak 450 MMSCFD for 6 years.

After peak production,  then these fields will decline naturally (decline rate).

This field is expected to produce for 14 years.

At present, the corresponding plan of development / POD agreed, about 70% of gas from the block will be exported, while only 30% domestic allocation.

SKK Migas will seek 47% of gas from the block allocated for domestic needs.

Gas from the Jangkrik fields will be used to power sector and industry in

  • East Kalimantan,
  • Java,
  • South Sumatra and central Sumatra,
  • North Sumatra and
  • Aceh

in the form of liquefied natural gas (LNG) and gas pipelines. (Pelaksana Tugas Kepala SKK Migas, Johanes Widjonarko said to Bisnis Indonesia newspaper on 11 Feb 2014).

References /  read more :


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