Asset report

Sierra Leone Liberia exploration basin

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Report summary

Sierra Leone's history of political and economic instability, combined with the Ebola outbreak in 2014, has resulted in little to no exploration in past couple of years. The country's position along the West African Transform Margin made it attractive to explorers looking to replicate the recent success in countries such as Ghana, however disappointing exploration results offshore Liberia and Sierra Leone have raised concerns with the overall petroleum system and limited yet-to-find volumes. With no commercial fields and no existing infrastructure, early developments with have to support the cost of the country's upstream industry. Sierra Leone has an attractive fiscal regime compared to other deepwater West African countries. However, prospect economics are extremely marginal for investors. High exploration and development costs in a low price environment has resulted in value destruction across the basin.

What's included

This report contains

  • Document

    Sierra Leone

    ZIP 2.62 MB

  • Document

    Sierra Leone Liberia exploration basin

    PDF 3.55 MB

  • Document

    Sierra Leone Liberia exploration basin

    ZIP 6.07 MB

Table of contents

Tables and charts

This report includes 42 images and tables including:


  • Value creation versus investment (TYP period)
  • Value creation versus investment (outlook)
  • Exploration wells by play
  • Licensed exploration acreage
  • Expiry forecast of current licences
  • Exploration and appraisal spend
  • Exploration spend per well and average well depth
  • Commerciality index
  • Drilling activity by well type
  • Cumulative exploration wells by play
  • Discoveries and success rates
  • Discoveries by licence year and drilling year
  • Basin creaming curve
  • Volumes discovered by well
  • Average discovery size and volume per well by year
  • Cumulative discoveries by play
  • Cumulative volumes discovered by play
  • Cretaceous Deepwater
  • Economic analysis: Image 1
  • Economic analysis: Image 2
  • Breakeven price versus prospect size
  • Value creation versus investment
  • Cretaceous Deepwater
  • Value of potential discoveries
  • Unit value of potential discoveries
  • Breakeven price of exploration
  • Discount rate breakeven price sensitivities


  • Key play data
  • Assumptions
  • Price assumptions
  • Key play characteristics
  • Summary of discovery and development costs
  • Key basin data
  • Top discoveries (2006-2015)
  • Forecast data by play (2016-2035)
  • Reserves and resources: Table 4
  • Cretaceous Deepwater
  • Typical fiscal terms
  • Cretaceous Deepwater
  • Full-cycle economic analysis
  • Cretaceous Deepwater
  • Cretaceous Deepwater

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