Tullow Oil said attempts to find more gas at its Mbawa-1 exploration well in Kenya had met with failure.
The FTSE 100 explorer previously announced drilling at the offshore well had encountered 52 metres of net gas pay in the primary target.
However, an attempt to find deeper pockets of hydrocarbons had come to nothing after drilling reached a total depth of 3151 metres.
Try 6 free issues of MoneyWeek today
Get unparalleled financial insight, analysis and expert opinion you can profit from.
Sign up for MoneyWeek’s free twice-daily newsletter.
Join more than 165,000 subscribers and keep yourself informed with latest financial news, insights and expert analysis to help you understand what really matters when it comes to your finances.
Join more than 165,000 subscribers and keep yourself informed with latest financial news, insights and expert analysis to help you understand what really matters when it comes to your finances.
The company said operator Apache was running wireline logs - making records of the geological formations encountered during drilling - after which the well would be plugged and abandoned.
"Although the deeper targets at this location were unsuccessful these results will be vital in evaluating the still significant prospectivity of this block," said Tullow's Exploration Director, Angus McCoss.
The firm's shares were trading down around 1% following the announcement.
Join more than 165,000 subscribers and keep yourself informed with the latest financial news, insights and expert analysis to help you understand what really matters when it comes to your finances.
MoneyWeek is written by a team of experienced and award-winning journalists, plus expert columnists. As well as daily digital news and features, MoneyWeek also publishes a weekly magazine, covering investing and personal finance. From share tips, pensions, gold to practical investment tips - we provide a round-up to help you make money and keep it.