SEF Energy, established in 2014, is a private holding company comprised of US-based manufacturing companies, Downing Wellhead and Oso Perforating. We have over 40 years of experience in the energy industry and our roots run deep in Oklahoma. Our mission is to create a culture of excellence, to provide a meaningful work experience for employees and to facilitate the provision of energy to the world. We do this through our key commitments and following our core values.
Oso Perforating is a downhole tool provider specializing in perforating technology. We design and manufacture high-quality perforating products and ancillary equipment. We take pride in providing our customers with industry leading completion tools that are innovative while cost-effective. Our manufacturing capacity coupled with our technical prowess allows us to be highly responsive to our customers.
At our U.S. based manufacturing facility in Oklahoma City, we manufacture casing and tubing heads, casing and tubing hangers, adapters, valves, flanges and other pressure control and casing suspension equipment for Downing Wellhead. For Oso Perforating, we manufacture a high volume of charge tubes, perforating gun bodies and subs, as well as assemble the perforating guns
Our Oklahoma City headquarters features a 100,000 square foot, state-of-the-art, climate-controlled facility manufacturing products for both Downing Wellhead and Oso Perforating. Our organized and clean shop features modern CNC machine tools, measuring and testing equipment.
Take a glimpse inside our facility! We were featured on Fox Business Network’s Manufacturing Marvels!
We hire CNC Machinists, CNC Operators, Assembly/Test Technicians, Quality Inspectors, and Welders who thrive in a fast-paced culture, and who show up for work each day ready to demonstrate excellence in their work enabling us to provide superior service and equipment to our customers.
When you work on the manufacturing team at Downing or Oso, you know you are working for a successful business that invests in its people. You will experience a positive, team-based work culture that values leadership no matter you level in the company.