Matindok Gas Development Project, Central Sulawesi

The Matindok gas development project comprises the development of the Donggi, Matindok, Maleoraja, Sukamaju and Minahaki fields, which are located in the Banggai basin in Central Sulawesi, Indonesia. First production from the project was in early 2016.

The Donggi and Minahaki fields are siutated in the Toili Barat district whereas the Sukamaju, Maleoraja and Matindok fields are located in Batui district.

PT Pertamina EP is implementing the project. The initial plan of development (POD) for the project was approved in December 2008 and the existing revised POD was approved in March 2011. As of July 2014, 21% of the construction activities for the project had been completed.

Reserves and production

The fields are together estimated to hold 852.75 billion cubic feet (bcf) of gas. Net production from the project is estimated to be 105 million standard cubic feet a day (Mmscfd) and the production life of the project is predicted to be 20 years.

Matindok gas project details

The project involves the drilling of 18 development wells and six work-over wells. Four work-over and four development wells were drilled at Donggi, while seven development wells were drilled at Matindok.

The scheme also includes the drilling of four development wells at Minahaki, two development wells and a work over well at Maleoraja, and a development well and a work over well at Sukamaju.

The project also involved the construction of two central processing plants (CPPs), with a capacity of 50MMscfd and 55MMscfd respectively, at Donggi and Matindok. The construction of the Donggi CPP started in December 2013. The Donggi and Matindok plants came online in April 2016 and April 2017 respectively.

Other project activities included the construction of block stations at Donggi, Sukamaju and Matindok, manifolding stations at Maleoraja and Minahaki, export pipelines connecting the Donggi-Senoro LNG plant, and the development of new roads and improvement of existing roads to facilitate drilling activities.

The gas fuel required for the project facilities is sourced from the project site itself, while the required oil fuel is supplied from one of Pertamina’s refinery.

Gas supply from Matindok gas project

From the overall production, 85MMscfd of gas is supplied to the Donggi-Senoro LNG plant, which was constructed by the Donggi-Senoro LNG joint venture comprising Sulawesi LNG Development (Mitsubishi and Korea Gas Corporation – 59.9%), Pertamina (29%) and Medco (11.1%), whereas 20MMscfd is supplied to PT PLN (Persero).

The $2.8bn Donggi-Senoro LNG liquefaction plant has a nameplate capacity of two million tonnes a year, comprising a single LNG processing train using Air Products’ multi-component refrigerant LNG process technology.

Contractors involved with the Indonesian gas project

The Japan Bank for International Cooperation (JBIC) conducted environmental impact assessment (EIA) for the project.

The $234m engineering, procurement, construction and installation (EPCI) contract for the gas well pads, flowlines, pipelines, the central processing plant at Matindok with gas treatment facilities such as acid gas removal and sulphur removal, and ancillary infrastructure was awarded to the joint venture of Technip and Wijaya Karya (WIKA).

In June 2015, Integraph and its local distributor and partner PT Everest Technology were contracted to provide the former’s proprietary SmartPlant Foundation and SmartPlant Enterprise for Owner Operators (SPO) Core solutions to power a new electronic document management system (EDMS) for the project.

Gas treatment technologies were provided by Shell, while forged fittings and branch outlets for the project were supplied by Delcorte Fittings.