Natural gas pipeline and storage provider DT Midstream Inc. (DTM), with a portfolio that includes 900 miles of regulated interstate pipelines, said Wednesday it would join a rapidly growing project aimed at better understanding the energy industry’s role in greenhouse gas (GHG) emissions.

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A day later, Houston-based Kinder Morgan Inc. (KMI), one of the largest energy infrastructure companies in North America, jumped aboard as well. 

The companies said they partnered with Cheniere Energy Inc., the largest U.S. producer of liquefied natural gas (LNG), in an effort to study emissions. They also aim to develop new protocols to capitalize on technology and bolster clean energy supplies.

The project, which includes a swelling slate of midstream companies as well as academic...