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Northwest Natuna PSC
The largest undeveloped heavy oil discovery in Indonesia
Ande-Ande Lumut (AAL) is located within the Northwest Natuna block, in shallow waters of approximately 70 meters, with reservoir depths of around 1,100 meters
The Northwest Natuna block covers an area of approximately 461 km² and lies about 260 km (145 nautical miles) north-northwest of Matak in the Anambas Islands, 510 km northeast of Singapore and Batam, and 1,300 km north of Jakarta
Location
Offshore Natuna Sea
Size of working area
461 km²
PSC signed
December 2004
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Asset details
Ande-Ande Lumut Oilfield
Development of the AAL oilfield is currently underway, with first oil targeted by 2028. A Central Processing Platform (CPP) will be installed and connected to a spread-moored Floating Storage Offloading (FSO) vessel
Synergies between Prima Energy and its marine operations group create real operational benefits and significant savings opportunities

Appraisal & Development

Oilfield Appraisal
The AAL area is a seahorse-shaped oil accumulation, approximately 8 km N-S x 4 km E-W and divided into southern, central, and northern segments
Four wells have delineated this discovery: AAL-1X drilled in 2000, AAL-2XR and -3X drilled in 2006, and AAL-4X drilled in 2016
Three of these wells in the central segment have been successfully tested
Ande-Ande Lumut (AAL) Plan of Development
A new AAL Plan of Development (PoD) was approved in 2024. This new PoD will use a Central Processing Platform (CPP) with 20 or more horizontal wells, and a Floating Storage & Offtake (FSO) vessel. As the oil is heavy and the sand is unconsolidated, each horizontal well will utilise sand control, inflow control and electrical submersible pumps
The CPP will start construction in 2026, and first oil is expected in 2028

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