Analysis for oil-field exploitation, chemical analysis, chemical research, chemistry services, database reconstruction, computer consultancy, computer programming, copying of computer programs, development (design) of software, software installation, maintenance of computer software, updating of computer software, design of computer systems, computer systems analysis; consultation regarding environmental protection; engineering; underwater exploration; weather forecasting services; geological prospecting, geological research, geological surveys; land surveys; materials testing, mechanical research, oil prospecting, oil-field surveys, oil-well testing, physics research, technical project studies, surveying, engineering work