What is the primary objective of JAPEX's second exploratory well in Tomakomai?

The primary objective is to evaluate the geological characteristics, storage capacity, and containment integrity of deep subsurface formations in the Tomakomai area to support future commercial-scale offshore CO2 storage.

Why is the Tomakomai area significant for Japan's CCS strategy?

Tomakomai is Japan's premier CCS hub, having previously demonstrated safe sub-seabed injection of over 300,000 tonnes of CO2. The area provides favorable offshore geological storage formations in proximity to major industrial emission sources in Hokkaido.

How does this drilling program align with Japan's broader climate goals?

The project directly supports Japan's target of launching commercial CCS operations by 2030 and reaching net-zero greenhouse gas emissions by 2050, providing an essential pathway to decarbonize heavy manufacturing and power generation.

Offshore Technology · August 17, 2026 (22h ago) · 1 min read

JAPEX begins drilling second exploratory CCS well in Tomakomai

Analysis

AI-assisted analysis · reviewed by Yuri Kan

Japan Petroleum Exploration (JAPEX) has advanced its decarbonization strategy by spudding a second exploratory appraisal well dedicated to carbon capture and storage (CCS) in Hokkaido's Tomakomai region. This operation is critical for assessing sub-seabed geological formations and establishing permanent, commercial-scale CO2 sequestration capacity in northern Japan. The initiative underscores Japan's accelerated drive to decarbonize hard-to-abate industrial sectors while securing domestic energy transition infrastructure.

Key Facts

Japan Petroleum Exploration (JAPEX) has commenced drilling operations on its second CCS exploratory well in the Tomakomai area of Hokkaido.
The exploration program is designed to evaluate deep geological reservoirs for safe and permanent sub-seabed carbon dioxide storage.
The Tomakomai area serves as Japan's flagship demonstration hub for carbon capture and storage technology.
This drilling campaign supports Japan's national target to achieve commercial-scale CCS deployment by 2030.
The appraisal will gather vital subsurface data including reservoir permeability, porosity, and seal integrity of the caprock formations.

Background & Context

Japan has actively developed carbon capture and storage technologies since the early 2010s to meet its net-zero emissions targets by 2050, given the nation's heavy reliance on fossil fuels for power and industry. The Tomakomai CCS Demonstration Project previously achieved a major milestone by successfully injecting over 300,000 tonnes of CO2 offshore between 2016 and 2019. Building on these results, the Japanese government and domestic energy majors are expanding exploratory drilling to de-risk commercial hubs capable of storing millions of tonnes of industrial CO2 annually.

Market Impact

This drilling milestone directly strengthens Japan's positioning as an advanced developer of offshore CCS frameworks in the Asia-Pacific region. For upstream operators like JAPEX, mastering subsurface storage engineering offers a viable pathway to sustain energy operations while mitigating regulatory and carbon pricing risks. Furthermore, successful validation of the Tomakomai offshore reservoirs will provide heavy industry, power utilities, and future blue hydrogen projects with a proven domestic sink for their carbon emissions.

What to Watch

Industry stakeholders will closely monitor logging, core sampling, and flow-test data from the exploratory well over the coming months to confirm storage capacity estimates. Following well completion, JAPEX and its partners are expected to advance engineering studies toward front-end engineering design (FEED) for full-scale commercial storage. The outcome will also influence Japan's regulatory framework and capital allocation for its planned 2030 commercial CCS cluster rollouts.

Frequently Asked Questions

What is the primary objective of JAPEX's second exploratory well in Tomakomai?: The primary objective is to evaluate the geological characteristics, storage capacity, and containment integrity of deep subsurface formations in the Tomakomai area to support future commercial-scale offshore CO2 storage.
Why is the Tomakomai area significant for Japan's CCS strategy?: Tomakomai is Japan's premier CCS hub, having previously demonstrated safe sub-seabed injection of over 300,000 tonnes of CO2. The area provides favorable offshore geological storage formations in proximity to major industrial emission sources in Hokkaido.
How does this drilling program align with Japan's broader climate goals?: The project directly supports Japan's target of launching commercial CCS operations by 2030 and reaching net-zero greenhouse gas emissions by 2050, providing an essential pathway to decarbonize heavy manufacturing and power generation.

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