Biochar Use in Capping Abandoned Oil & Gas Wells

Abandoned oil and gas wells may number close to 29 million globally with more than 3 million in the US alone. Many of these are emitting significant amounts of methane, estimated at 2.5M tons per year. Due to methane’s outsized impact on climate change, there is increased urgency to reduce these drastically and rapidly.
Recent pilot projects in the US have demonstrated that biochar can be used to both cap wells and remediate toxins that often contaminate ecosystems around wells. Wells provide a safe, beneficial, long-term sequestration opportunity for biochar. Using biochar to cap wells can also significantly reduce the amount of concrete, the traditional material of choice for capping, thereby further reducing greenhouse gas emissions related to the production of concrete. Using a material such as biochar may also provide a more resilient cap that is less susceptible to degradation caused by seismic activity.
Mark Mersman, a co-founder of OFX EcoSolutions, will outline the process, climate and environmental benefits as well as future possibilities for using biochar to cap abandoned wells and mines.
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