ABOUT PRIME GROUP
An Integrated Energy Group.
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Driving supply chain success
Powering value and growth across the energy value chain — from the Natuna Sea and into Indonesia's energy future.
Established in 1992, Prime Group is a major privately owned Indonesian energy company with proven credentials as both investor and operator across the oil and gas sector. Our operations span upstream exploration and production, gas commercialisation, crude oil trading, and downstream refinery development — all in service of Indonesia’s domestic energy needs and long-term energy security.
OUR STORY
Who We Are
THREE DECADES
of Building Indonesia's Energy Capacity.
“We did not build Prime Group to be the biggest. We built it to be the most trusted — by our people, our partners, and the country we serve.”
— Prime Group Leadership
01
Foundation & Identity
Prime Group is a major Indonesian energy company — established in 1992 and privately owned. From the beginning, we have operated with a clear purpose: to develop Indonesia’s natural energy resources responsibly, to build lasting value for the nation, and to prove that a nationally owned energy company can compete at the highest global standards.
02
Business Model
We operate through two primary business segments — upstream and downstream — with activities spanning oil and gas exploration and production, gas processing, crude oil and condensate trading, and refinery development. This integrated model allows us to create value at every stage of the energy chain, and to support Indonesia’s domestic energy supply with consistency and depth.
03
Growth Track Record
Over three decades, Prime Group has built a strong platform for long-term growth through the disciplined acquisition, integration, and development of a diverse portfolio of energy businesses. Each investment has been made with a long-term lens — not for short-term returns, but for enduring, sustainable contribution to Indonesia’s energy landscape.
04
National Commitment
We are deeply committed to Indonesia — to its people, its communities, and its future. As a privately owned national energy group, we believe that strong, responsible energy development is one of the most meaningful contributions any company can make to a growing nation. That belief drives every decision we make.
WHAT DRIVES US
Built on
Values.
Driven by Purpose.
Deliver Energy, Responsibly
Maximise value from Indonesia's natural resources — upstream and downstream — while upholding the highest standards of safety and environmental stewardship.
Invest in Indonesian Growth
Develop Indonesian talent, build national supply chains, and partner with local communities — growing the nation alongside our portfolio.
Operate with Integrity
Maintain the highest standards of ethics, transparency, and accountability across all subsidiaries, partnerships, and operations.
Expand with Discipline
Pursue organic and inorganic growth that is strategically sound, financially disciplined, and aligned with Indonesia's long-term energy priorities.
OUR VISION
To be Indonesia's most trusted integrated energy group — actively contributing to national energy security, growing with the strength of Indonesian resources and talent, and setting the benchmark for responsible, safe, and agile energy operations across the value chain.
OUR LEADERSHIP
Experienced. Committed. Indonesian.
Our leadership team brings together decades of upstream and downstream experience, deep knowledge of Indonesian energy markets, and an enduring commitment to the national priorities that define our identity as a group.
OUR JOURNEY
Thirty
Years of
Purposeful
Growth.
From our founding in Jakarta to our current position as a multi-asset integrated energy group — this is how Prime Group has grown with Indonesia.
1992
Prime Group is Founded
Established in Jakarta, Prime Group begins with a clear mandate: to develop Indonesia's oil and gas resources with national pride, operational discipline, and a long-term investment horizon.
1979
South Natuna Sea Block B — A Decades-Long Legacy
Oil production first commenced in the South Natuna Sea in 1979 — decades before Prime Group's involvement. By the time Prime Group acquires its 25% interest in Block B through Prime Natuna Inc. (from Chevron), the block has become one of Indonesia's most strategically significant producing assets.
Early 2000s
Gas Commercialisation — A Strategic Pivot
Development pivots to commercialising gas fields in the Natuna Sea, establishing long-dated Gas Sales Agreements with SembCorp and Petronas — connecting Indonesia's natural gas to regional energy markets.
2010s
Block B Peaks — 140,000 BOED
Production in the South Natuna Sea Block B reaches its peak at approximately 140,000 barrels of oil equivalent per day — marking one of Indonesia's most prolific upstream producing periods and establishing Prime Group's operational credentials at scale.
2021
Tuna PSC — Planning the Next Chapter
Prime Tuna EP acquires a 50% participating interest and operatorship in the Tuna PSC from Harbour Energy. Two appraisal wells are drilled on the Kuda Laut and Singa Laut discoveries to evaluate development potential, confirming a world-class resource.
Dec 2022
Tuna PSC — Plan of Development Approved
The Indonesian Government approves the Plan of Development (POD) for the Tuna PSC — a landmark milestone that paves the way for one of Indonesia's most significant new gas developments. First gas production is targeted for 2030.
May 2026
Prime Group's newest frontier — expanding the Natuna Sea footprint with an awarded exploration block at the heart of Indonesia's next energy chapter.
On 20 May 2026, the Ministry of Energy and Mineral Resources (ESDM) officially appointed Prime Natuna EP as the operator of Arwana III — an offshore block situated in the Natuna Sea, one of Indonesia's most strategically significant maritime territories.
Today
An Integrated Group — Four Subsidiaries, One Vision
Prime Group operates across four upstream PSC interests and one downstream refinery — managing approximately 68,000 mboed of production, 228 mmboe of 2P reserves, and 572 mmboe of 2C resources, with an active exploration and development pipeline through 2030 and beyond.
HOW WE OPERATE
Creating Value at Every Stage of the Energy Chain.
Exploration & Production
Our upstream business is built around three strategic Production Sharing Contract (PSC) interests in the waters of the Natuna Sea. We hold meaningful stakes — and in two cases, operatorship — across assets that collectively deliver approximately 68,000 mboed of oil and gas production and contain 228 mmboe of 2P reserves.
Our upstream activities span:
▸ Oil and gas exploration and appraisal
▸ Development
planning and capital project execution
▸ Ongoing
production operations and reservoir management
▸ Gas
commercialisation through long-term offtake
agreements
▸ Condensate and crude oil trading
PRIME GROUP
Energy
For
A
Better
Future
OUR SUBSIDIARIES & AFFILIATES
Four Pillars.
One Integrated Energy Group.
Prime Group creates value at every link of the energy chain — through four specialised subsidiaries, each with a distinct mandate, a proven track record, and a shared commitment to powering Indonesia.
NATUNA SEA BLOCK A · 28.67% PARTICIPATING INTEREST + OPERATORSHIP
Prime Natuna EP
Operatorship of Indonesia’s next gas frontier — delivering production today and significant resource upside for tomorrow.
Prime Natuna EP (PNEP), operating through PONS B.V., holds a 28.67% participating interest and full operatorship in the Natuna Sea Block A Production Sharing Contract — acquired from Harbour Energy. Block A is a gas-focused producing asset currently delivering approximately 90 mmscfd of gas production, equivalent to roughly 20,000 boepd.
The block holds 33 mmboe of 2P reserves (2 mmbbl of oil and 190 Bcf of gas) with an additional 190 mmboe of 2C resource upside — representing a compelling growth platform supported by long-term SembCorp Gas Sales Agreements.
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Interest + Operatorship — Natuna Sea Block A PSC
▸ Acquired from Harbour Energy
▸ Operated through PONS
B.V.
▸ ~90 mmscfd gross gas production
▸ ~20,000 boepd
equivalent
▸ 33 mmboe 2P reserves
▸ 2 mmbbl oil + 190
Bcf gas
▸ 190 mmboe 2C resource upside
▸ GSA-1 &
GSA-2 with SembCorp
SOUTH NATUNA SEA BLOCK B · 25% PARTICIPATING INTEREST
Prime Natuna Inc.
Indonesia’s gateway to the Natuna Sea — a 25% stake in one of the country’s most enduring producing assets.
Prime Natuna Inc. (PNInc) holds a 25% participating interest in the South Natuna Sea Block B Production Sharing Contract — acquired from Chevron. Block B is one of Indonesia’s most significant and enduring oil and gas producing assets, with a production history dating to 1979. Today, the block delivers approximately 24,000 bopd of oil and 160 mmscfd of gas — totalling roughly 50,000 barrels of oil equivalent per day.
The block contains approximately 70 mmboe of 2P reserves and is underpinned by long-term Gas Sales Agreements (GSA-1 and GSA-3) with SembCorp, securing a multi-decade supply corridor to Singapore.
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Interest - Natuna Sea Block B PSC
▸ 25% interest — South Natuna Sea Block B PSC
▸ Acquired
from Chevron
▸ ~24,000 bopd gross oil production
▸
160 mmscfd gross gas production
▸ ~50,000 boepd total
gross production
▸ 70 mmboe 2P reserves
▸ 38 mmbbl
oil + 200 Bcf gas
▸ 90 mmboe 2C resource upside
▸
GSA-1 & GSA-3 with SembCorp.
TUNA · 50% PARTICIPATING INTEREST + OPERATORSHIP
Prime Tuna EP
Building Indonesia’s next major gas development — a world-class resource on its path to first gas in 2029.
Prime Tuna EP (PTEP) holds a 50% participating interest and operatorship in the Tuna PSC — acquired from Harbour Energy. The Tuna discovery was originally made by Premier Oil in 2014 through the drilling of the Kuda Laut-1 and Singa Laut-1 exploration wells. Two further appraisal wells were drilled in 2021 to evaluate development potential.
With the Plan of Development submitted and approved by the Government of Indonesia in December 2022, the Tuna PSC is now advancing toward first gas production targeted for 2029. The Kuda Laut and Singa Laut fields hold approximately 124 mmboe of reserves and a further 166 mmboe of 2C resource potential.
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Interest + Operatorship — Tuna PSC
▸ Acquired from Harbour Energy
▸ Originally discovered:
Premier Oil, 2014
▸ Two appraisal wells drilled:
2021
▸ POD approved by GoI: December 2022
▸ First
gas targeted: 2029
▸ 124 mmboe total reserves
▸
166 mmboe 2C resources
▸ 34 mmbbl oil + 566 Bcf gas
(2C)
▸ Kuda Laut and Singa Laut fields
ARWANA III · OPERATORSHIP
Prime Arwana EP
Prime Group’s newest frontier — expanding the Natuna Sea footprint with an awarded exploration block at the heart of Indonesia’s next energy chapter.
On 20 May 2026, the Ministry of Energy and Mineral Resources (ESDM) officially appointed Prime Natuna EP as the operator of Arwana III — an offshore block situated in the Natuna Sea, one of Indonesia’s most strategically significant maritime territories.
Five
Core Values. One Purpose.
5 VALUES PRIME GROUP
Trusted by the Partners Who Matter Most.
Prime Group’s operations are anchored by long-term relationships with world-class energy counterparties — ensuring reliable supply, sustained revenue, and shared standards of operational excellence.
From the Natuna Sea to East Java, Prime Group operates across upstream and downstream energy, producing oil and gas, refining petroleum products, and commercialising resources for regional markets.