Indonesia - Andaman PSC

[Administrator]

Abu Dhabi, United Arab Emirates, 13 May, 2024 –Mubadala Energy, the international energy company headquartered in Abu Dhabi and the operator of the South Andaman Gross Split PSC, today announced another substantial gas discovery from the Tangkulo-1 Exploration well, drilled in South Andaman, about 65 kilometres offshore North Sumatra, Indonesia.

The discovery marks the second deep water well operated by the company. Tangkulo-1 was drilled to a depth of 3,400 meters in 1,200 meters water depth, just a few months after the major discovery at the Layaran-1 well, also in South Andaman.

The Tangkulo-1 well encountered 80 meters of gas column in a good quality Oligocene sandstone reservoir confirmed through an extensive data gathering campaign that includes obtaining a full core of 72 meters, wireline logging, sidewall core, pressure and fluid sampling. Utilizing a new Drill Stem Test (DST) design, the well successfully flowed 47 mmscf/d of excellent gas quality and 1,300 barrels of condensate. Although testing was constrained by testing facilities, the estimated well capacity is 80-100mmscf/d and over 2,000 barrels of condensate.

Mansoor Mohammed Al Hamed, CEO, Mubadala Energy, commented: "When added to our recent success at Layaran-1, this game-changing discovery promises to transform Indonesia's and Southeast Asia's energy landscape and demonstrates that South Andaman is one of the world's most exciting energy plays.

By working with partners and harnessing our world class technical capabilities, I am confident we can realize the full potential of this block, in line with our commitment to support the government's ambitious development timeframes. This news also strengthens our ability to play a proactive role in the energy transition through our gas biased strategy."

With an 80% working interest in South Andaman, Mubadala Energy is the largest net acreage holder in the area. In line with company's gas-biased strategy, Tangkulo-1 is an important pillar in the cluster's development story, with the discovery unlocking further potential in the southern part of the block and indicating an additional multi-TCF of prospective gas resource in nearby structures.

Together with Layaran-1, this discovery adds material contingent volume and provides a platform for Mubadala Energy's continued organic growth in the region through additional exploration and appraisal activities.

[Administrator]

SLB Awarded Multiple Offshore Drilling Contracts by Mubadala Energy for Tangkulo Deepwater Development in Indonesia

Key points:

• SLB awarded multiple offshore drilling services contracts by Mubadala Energy for the Tangkulo deepwater development in the Andaman Sea, offshore Indonesia.
• Scope includes drilling, completion and testing services across the full well life cycle.
• First gas targeted before the end of 2028, supporting Indonesia's long-term energy security

HOUSTON, February 12, 2026 — Global energy technology company SLB (NYSE: SLB) has been awarded multiple offshore drilling services contracts by Mubadala Energy, the Abu Dhabi headquartered international energy company, for the Tangkulo natural gas deepwater development and associated exploration and appraisal drilling activities in the Andaman Sea, offshore Indonesia.

Under the awards, SLB will work with Mubadala Energy to deliver integrated drilling and well services across the full well life cycle. The scope includes directional drilling, drilling fluids, cementing, wireline, slickline, coiled tubing, well testing, mud logging and upper and lower completions. The integrated model is designed to streamline execution while enhancing safety, reliability and operational performance.

"This contract award reflects Mubadala Energy's strategic vision to develop Indonesia's offshore resources responsibly and efficiently," said Abdulla Bu Ali, president director, Mubadala Energy Indonesia. "Through this partnership, we will deploy advanced drilling technologies to support safe, efficient execution and delivery of first gas anticipated by end of 2028. The Tangkulo field is a cornerstone project in our Southeast Asia portfolio and underscores our role in supporting Indonesia's long-term energy security and economic growth."

The project will leverage SLB's offshore and deepwater technologies, including real-time downhole monitoring, to reduce operational risk, improve well placement and strengthen project economics.

"Deepwater developments demand disciplined execution and integrated delivery," said Sherif Shohdy, president, Asia, SLB. "By combining advanced drilling technologies, real-time insights and strong local expertise, we are well positioned to support safe and efficient offshore operations and accelerate progress toward first gas."

The contracts were awarded through a competitive tender process and underscore the strategic importance of the Tangkulo development to Indonesia's long-term energy security.

[Administrator]

Fugro supports Mubadala Energy's deepwater gas development offshore North Sumatra

17 Dec 2025



Fugro has been awarded a large contract with Mubadala Energy (South Andaman) RSC Limited to deliver advanced soil investigation services for the South Andaman Deepwater Development, located offshore Indonesia. This strategic project will inform the Front-End Engineering Design Engineering Procurement and Construction (EPC) award, and guide the detailed design for the development of the Tangkulo Field.

The Tangkulo Field comprises offshore sub-sea wells connected via flowlines to a Floating Production Storage and Offloading (FPSO) vessel, enabling gas processing and export. The treated gas will be transported through a dedicated export pipeline to an Onshore Receiving Facility in Aceh, Indonesia. Geo-data will be acquired using Fugro's deepwater autonomous underwater vehicle (AUV) and the robotic seafloor drill, Seafloor Drill 2, deployed from Indonesian support vessels.

"We are proud to support Mubadala Energy on this deepwater development," said Shalu Shajahan Regional Business Line Director, MSC Asia Pacific. "This project showcases our global expertise in deepwater geology and geohazard assessments, critical for confident decision-making during development. It reflects our commitment to enabling complex offshore developments through high-quality Geo-data insights and technical excellence."