Jangkrik

Location

The Jangkrik Complex is located within the Muara Bakau block of the Kutei Basin, approximately 70 kilometers off the coast of the Makassar Strait, Indonesia. The fields are situated at water depths ranging from 200 to 500 meters.

Fields and Reserves

The Jangkrik Complex comprises two gas fields: Jangkrik and Jangkrik North-East. These fields hold combined proven reserves of more than 1.3 trillion cubic feet of gas. The reservoirs are located within the sands of the Pliocene age for Jangkrik and within the sands of both Pliocene and Miocene ages for Jangkrik North-East.

Operators and Partners

• Operator: Eni S.P.A.
• Partners: ENGIE E&P (through its subsidiary GDF SUEZ Exploration Indonesia BV, now known as Neptune Energy, holding 33.3%), and PT. Saka Energi Muara Bakau holding 11.67%.

Discovery and Development

• Discovery: The first gas was discovered at Jangkrik in April 2009. Jangkrik North-East was discovered in July 2011.
• Appraisal and Approval: The Plan of Development (POD) for Jangkrik was approved in November 2011, and for Jangkrik North-East in January 2013.
• Production Start: Gas production began in May 2017, ahead of schedule.

Production Capacity

• The project is designed to produce 450 million standard cubic feet of gas per day (mmscf/d) for the first six years, with production expected to continue at a lower capacity for approximately eight more years. This translates to about 83,000 barrels of oil equivalent per day (boed).

Infrastructure

• Floating Production Unit (FPU): A barge-shaped FPU with a treatment capacity of 450 mmscf/d of gas and condensates was constructed. The FPU was built by a consortium comprising Hyundai Heavy Industries, Saipem, Tripatra Engineers & Constructors, and Chiyoda. The topsides were fabricated at Saipem’s Karimun Island Yard, and the hull was fabricated at HHI’s Ulsan yard in South Korea.
• Subsea Systems: The project involves 10 deep-water subsea wells connected to the FPU. The subsea systems include subsea trees, manifolds, jumpers, umbilicals, and other associated equipment supplied by FMC Technologies and fabricated by other contractors like McDermott and Technip.

Pipeline and Export

• The processed gas flows via a 79 km pipeline to the Onshore Receiving Facility and then through the East Kalimantan Transportation System to the Bontang LNG plant, where it is liquefied. The condensates are conveyed to the Senipah Terminal.

Market Supply

• Up to 47% of the produced gas is intended for domestic supply in Indonesia, while the remaining gas is exported to neighboring Asian countries.

Contractors and Contracts

• EPCI Contract: Awarded to a consortium comprising Hyundai Heavy Industries, Saipem, Tripatra Engineers & Constructors, and Chiyoda, valued at $1.1 billion.
• Subsea Systems Contract: Awarded to FMC Technologies for $720 million.
• Other Contractors: Technip, McDermott, and Oceaneering were also involved in various aspects of the project.

Economic and Strategic Significance

• The project is a significant contributor to Indonesia's energy needs and economic development. It also serves as a hub for the development of nearby gas discoveries, such as the Merakes field.

Safety and Innovation

• Gas safety was a priority in the project, with the installation of state-of-the-art gas detectors and other safety measures to prevent gas explosions and ensure crew safety.

The Jangkrik project is a major deep-water gas development that highlights advanced engineering, procurement, and construction capabilities in the offshore oil and gas sector.