A natural gas certification pilot is set to begin this month at Tokyo Gas Ltd.’s properties in the Haynesville Shale of Texas and Louisiana as part of an agreement with Project Canary.

Under the pact announced Monday, Project Canary would install continuous emissions monitors and carry out its proprietary TrustWell operational certification on several well locations operated by Tokyo Gas subsidiary TG Natural Resources LLC.   

The companies jointly said the project “aims to demonstrate that markets for U.S. natural gas produced with the highest environmental performance standards are expanding.”

TG Natural Resources CEO Craig Jarchow said the agreement builds on the company’s environmental efforts already in place. The company has deployed aerial emissions detection...