Blue Dolphin Energy Company, an independent downstream energy company, engages in the refining of petroleum products in the United States. It operates through Refinery Operations, Tolling and Terminaling, and Corporate and Other segments. The company offers finished products, such as jet fuel; and intermediate petroleum products, including naphtha, heavy oil-based mud blendstock, and atmospheric gas oil. It also conducts tolling and terminaling services at the Nixon facility. In addition, the company offers storage tank rental services; ancillary services, such as in-tank blending; and tolling and reservation services. The company serves distributors, wholesalers, and refineries in the lower portion of the Texas Triangle, including the Houston, San Antonio, and Dallas/Fort Worth areas. The company is headquartered in Houston, Texas. Blue Dolphin Energy Company operates as a subsidiary of Lazarus Energy Holdings, LLC.