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Seismicity

Regulators and public sector groups are studying potential links between wastewater disposal and other aspects of oil and gas operations and increased seismic activity in Oklahoma and Texas. Marathon Oil currently does not own or operate any injection wells for wastewater disposal in targeted formations in Oklahoma, and we evaluate third-party water disposal sites to ensure they do not inject into formations that have been linked to seismic activity.

 

In Oklahoma, regulators have issued additional guidelines to oil and gas operators in some areas of the state for management of risks relating to potential anomalous seismicity. Marathon Oil is subject to these guidelines and has all necessary procedures in place to monitor our operations and ensure full compliance. We also continue to monitor regulatory efforts related to seismic activity in all of our operating areas, to assess their potential commercial and operational impacts.

We are evaluating asset-specific recycling and reuse of produced water, and actively working with states to determine any beneficial use of treated produced water. We continue to engage with state governments – both independently and through participation in organizations such as API, the Oklahoma Oil and Gas Association (OKOGA), Texas Oil and Gas Association (TXOGA) and the American Exploration and Production Council (AXPC) – to establish regulations that promote recycling and reuse in our assets where feasible.

We also monitor relevant scientific research through our membership in the Stanford Center for Induced and Triggered Seismicity consortium. The mission of this consortium is to conduct fundamental research on the physical processes responsible for induced and triggered seismicity, and to develop a scientifically based framework for seismic risk assessment and risk management. This research is used by state governments to regulate the oil and gas industry.

 

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