Chemical analysis; technical project studies; engineering; meteorological information; material testing; bacteriological research; biological research; geological research; physics research; chemical research; analysis for oil-field and gas-field exploitation; underwater exploration; technical research; calibration (measuring); consultation in environment protection; oil-well and gas-well testing; quality control; geological surveys; oil-field and gas-field surveys; geological prospecting; oil and gas prospecting; mineral prospecting on land; chemistry services; surveying