Seneca Resources Co. LLC and NexTier Oilfield Solutions Inc. have begun a comparative carbon emissions assessment for various natural gas- and diesel-fired hydraulic fracturing (frack) equipment. 

Houston-based Seneca, the exploration and production (E&P) arm of National Fuel Gas Co., produces natural gas and oil in California, the Marcellus and Utica shales

The E&P would lead emissions testing on various diesel and dynamic gas blending engines, natural gas-fired turbine engines, and electric frack equipment with gas-fueled reciprocating engines. Independent third-party reviewers are to carry out the tests on each of the technologies. NexTier would perform equipment and completion solutions. 

Results of the study are expected to inform and craft “equipment solutions that ensure our customers achieve their emissions reduction and sustainability objectives,” said NexTier CEO Robert Drummond. 

Seneca also said the real-time well simulation procedures would follow recommended U.S. Environmental Protection Agency procedures. 

“Seneca is keenly focused on limiting our environmental impact, including looking for ways to further reduce greenhouse gas emissions generated by our operations,” said Seneca President Justin Loweth. 

“The testing to be performed over the coming months will provide comparative fact-based emissions data to support Seneca’s efforts to select equipment that best satisfies our commitment to long-term sustainable operations.”