US 175 Engineering Services for the oil and gas drilling; custom design and development of technological solutions for the oil and gas drilling, namely, mechanical and electrical equipment, tools and devices, for use on surface and downhole, with associated hardware, firmware, and software, for telemetric communication and control of downhole and surface devices; oil and gas well logging services; customer support services, troubleshooting in the nature of diagnosing problems with hardware and equipment for oil and gas drilling; providing advice and recommendation to others related to the performance, reliability, location and troubleshooting of hardware and equipment for oil and gas drilling