Private 5G Deployment Challenges in Oil & Gas: Architecture, Propagation, and OT Integration

The global energy sector is experiencing a digital transformation, often called “Oil and Gas 4.0,” where operational efficiency and safety rely heavily on dependable wireless connectivity. Private 5G, or Non-Public Networks (NPNs), offers a predictable alternative to traditional Wi-Fi for critical tasks such as autonomous drilling and remote inspections. However, deploying 5G New Radio (NR) in the oil and gas industry presents unique engineering challenges, particularly in dense, metallic environments, including RF propagation issues, spectrum regulatory complexities, and the integration of Layer 2 industrial protocols with Layer 3 cellular networks. This paper provides a technical analysis of these challenges and compares the effectiveness of Standalone NPN (SNPN) and Public Network Integrated NPN (PNI-NPN) architectures. It explores RF scattering in refineries, shared-spectrum management (CBRS), and cybersecurity concerns arising from blending IT and OT domains under IEC 62443. The findings suggest that successful deployment demands a fundamental shift in network design, with a focus on uplink capacity and precise channel modeling rather than traditional downlink-centric planning.