Asset Report

Onnagawa tight oil unconventional concept play



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Report summary

The Onnagawa is a middle Miocene-aged, bio-siliceous formation found throughout Japan. The Onnagawa is part of the petroleum system associated with numerous oil and gas fields in the Akita and Niigata districts. It is considered to be the main source rock for the Ayukawa field in northern Honshu in the Akita prefecture along the Sea of Japan coastline. 

What's included

This report contains

  • Document

    Onnagawa tight oil unconventional concept play

    PDF 5.02 MB

Table of contents

    • The Opportunity
    • What to watch
  • Location maps
  • Geology
  • Key companies
  • Fiscal and regulatory
  • Economic analysis

Tables and charts

This report includes 1 images and tables including:


  • Onnagawa Shale - First commercial production started in Ayukawa oil field.

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