42 Inspection services in the course of repair, remediation, construction and maintenance of oil and gas wells; Inspection of drilling equipment, well control equipment, downhole drilling tools, tubulars, casings, oil rigs, drilling operations, hoisting and handling tools, in field of oilfield and downhole drilling; Repair and maintenance services in oil and gas well drilling for oil rigs, drilling tools, tubulars, casings, and well control equipment; Mobile inspection, maintenance, and repair services in oil and gas well drilling for oil rigs, drilling tools, tubulars, casings, and well control equipment; Tubular management services to provide tubular inventory visibilty, storage location management, and centralized maintenance in the field of oil and gas; Scientific and technical services related to drilling rig selection and analysis, drill string and bottom hole assembly selection and analysis, well intervention, work over and slot recovery planning, sidetrack optimization, well abandonment planning, open hole and cased hole fishing; Scientific and technical services, namely, evaluation, research, simulation, prediction, modeling, and report preparation related to oilfield and downhole drilling operations; Engineering services in the field of oilfield and downhole drilling, namely, drilling rig selection and analysis, drill string and bottom hole assembly selection and analysis, well intervention, work over and slot recovery planning, sidetrack optimization, well abandonment planning, open hole and cased hole fishing; Engineering services in the field of oilfield and downhole drilling, namely, evaluation, research, simulation, prediction, modeling, and report preparation related to oilfield and downhole drilling operations; Data automation and collection service using proprietary software to evaluate, analyze, simulate, predict, model and collect service data in the field of oilfield and downhole drilling; Technical consultation and engineering services, namely, designing, modeling, simulating, predicting, testing, analyzing and reporting data in the field of oilfield and downhole drilling engineering; Providing online non-downloadable software for evaluating, analyzing, simulating, predicting, modeling, and collecting service data in the field of oilfield and downhole drilling; and Providing online non-downloadable software for simulating, modeling, and predicting size and geometry of milled window in milling operations, and the pass-through capability of follow-up assemblies for the completed window, including portions of drillstring, bottomhole assembly, mud motor, directional drilling and measuring equipment, and casings.