All clear after oilfield gas leak SEMINOLE – It was “all hands on deck” for a while after 8 p.m. on Friday when Seminole and Gaines County emergency services and Tabula Rasa Energy officials were called to the scene of a hydrogen sulfide (H2S) gas leak at a Tabula Rasa well 3.5 miles east of Seminole. Mindful of a blowout IN 2015 at the same location – one that displaced at least 160 people from their homes – emergency officials requested the opening of the Gaines County Civic Center, given the possibility of a broadevacuation. Once it was determined that this incident was ...