Kasawari

The Kasawari gas field is located in the South China Sea, offshore Sarawak, Malaysia, within block SK316 of the Central Luconia Province. It is approximately 200km north of Bintulu, Sarawak, at a water depth of about 108 meters.

The Kasawari gas field was discovered by Petronas in November 2011. The field is estimated to contain approximately 3.2 trillion cubic feet (tcf) of recoverable natural gas resources and is known for its relatively high levels of carbon dioxide.

The field is expected to produce up to 900 million standard cubic feet per day (mmscfd) of gas and 3.5 million barrels of condensate per day. Production is scheduled to commence in 2023.

The development of the Kasawari gas field involves several key components:
- A central processing platform (KSCPP) weighing approximately 47,000 tons, which will be the heaviest and biggest offshore platform in Malaysia. It will process up to 900 million cubic feet of gas per day.
- A wellhead platform (KSDP-A) weighing about 8,600 tons with nine drilling slots.
- A flare structure and inter-platform bridges linking the central processing platform to the wellhead platform.
- An 85km-long export pipeline connecting the central processing platform to the existing E11R-A platform, and an additional 80km-long pipeline to the Sarawak riser platform (SKR-D).

The gas produced will be processed to remove hydrogen sulfide (H₂S) and carbon dioxide (CO₂) and will undergo dehydration offshore before being transported to the SKR-D platform. From there, it will be sent to the Petronas LNG Complex in Bintulu for further processing and liquefaction.
The gas will supply the ninth train of the existing LNG terminal owned by PL9SB, a subsidiary of Petronas, with a production capacity of 3.6 million tons per annum (mtpa).

As part of the Kasawari Phase II project, Petronas has initiated the Kasawari Carbon Capture and Storage (CCS) project. This project aims to capture up to 3.3 million tons of CO₂ equivalent emitted by flaring each year and reinject it into the depleted reservoir at the M1 Field via a 138km-long subsea pipeline.
The CCS project includes the construction of a new fixed offshore platform with a 14,000-metric tonne topside and a 15,000-metric tonne eight-legged jacket. The platform will be linked to the Kasawari Phase one central processing platform through a bridge.
The project will utilize membrane separation technology and cryogenic distillation technology (Cryomin) for high CO₂ concentrations. It is expected to start operations by the end of 2025.

The project is being developed in four phases:
- Installation phase: Includes the transportation and installation of materials, components, platforms, flare tripod, and bridge-link.
- Pre-commissioning and commissioning phase: Involves cleaning, gauging, and hydro-testing of pipelines.
- Operations phase: The production and processing of gas.
- Project decommissioning phase: The eventual decommissioning of the facilities.

The Kasawari CCS project is a significant step towards reducing carbon dioxide emissions and supporting Petronas’ goal of achieving Net Zero Carbon Emissions by 2050. The project will contribute to reducing CO₂ emissions by 3.3 million tons per annum.