Onyx Engineering

Full-discipline engineering for refining and petrochemical projects is Onyx Engineering's core service. Its in-house disciplines include process, mechanical, instrumentation and electrical, and civil and structural engineering, along with estimating and scheduling. The company manages projects from inception through completion and can also provide support when work is outsourced. Project services coordinate disciplines from initial estimates through construction closeout. Safety services include staff, standby, and rescue teams, with safety incorporated into project planning, design, and execution. Onyx serves refining and petrochemical operators across Corpus Christi and the Gulf Coast, with projects also extending into North Texas and Oklahoma. The company has provided this specialized engineering work since 1992, supporting projects from maintenance to major capital work.