Oklahoma Studies Biochar to Seal Abandoned Oil Wells

Lawmakers evaluate converting invasive redcedar trees into material for remediation and oil well structural integrity.

Updated on Oct. 26, 2026 in Environmental

Oklahoma Studies Biochar to Seal Abandoned Oil Wells

Live Poll

Should the state fund projects to turn invasive trees into resources for environmental cleanup?

Oklahoma lawmakers recently convened an interim study to evaluate converting invasive eastern redcedar trees into biochar. The proposed process aims to leverage the carbon-rich material for soil remediation and as a sealant for thousands of abandoned oil and gas wells across the state.

Why it matters

Repurposing eastern redcedars, which have spread across the state for 50 years and strain local water supplies, could provide a scalable solution for carbon storage and the mitigation of methane leaks from orphan wells. This research-stage strategy seeks to turn an ecological nuisance into a tool for environmental restoration.

Biochar is produced by heating organic material—in this case, invasive redcedar trees—in a low-oxygen environment to alter its chemical composition. The resulting material can be added to cement to improve the structural integrity of plugs for abandoned oil wells.

The players

Oklahoma Conservation Commission

The state agency responsible for the management of the redcedar removal cost-share program.

Rebellion Energy Solutions

A Tulsa-based firm focused on the energy sector and environmental restoration technology.

The details

The transformation process utilizes pyrolysis, the heating of biomass to create a stable, carbon-rich solid. Beyond its use in well-plugging, the biochar functions as a filter capable of removing heavy metals, pharmaceutical residues, and per- and polyfluoroalkyl substances (PFAS) from water. It also assists in remediating soil contaminated by petroleum hydrocarbons found at historical drilling sites.

The spread of eastern redcedars across Oklahoma has occurred over the last 50 years.
The Terry Peach Watershed Restoration Act was signed into law in 2023.
Lawmakers held an interim study on the use of redcedar biochar in October 2026.

The Tech Race

This proposal aligns with the state's broader mandate under the 2023 Terry Peach Watershed Restoration Act to manage invasive species. It marks a shift from simple removal to an industrial-scale utility model for managing the state's overgrown woodlands.

If adopted, this strategy primarily affects rural landowners and energy operators tasked with mitigating environmental hazards from orphan wells. Future implementation hinges on scaling the pyrolysis technology and integrating biochar-enhanced materials into standard well-plugging workflows.

The takeaway

The study highlights an opportunity to link wildfire-prone brush clearing with the industrial challenge of sealing leaking oil wells. Stakeholders should track the Oklahoma Conservation Commission's future cost-share criteria for updates on biochar adoption.