Ensuring the separation of two-stage-production-fluid-separation. Dehydration and demineralization of production fluids. Chemical reagent injection through the Chemical Injection Skid. Commercial oil products storage. Commercial oil products dispatch to tank trucks with mass metering of oil products by a) indirect method of static measurements with the use of tank truck full capacity or b) direct method of dynamic measurements with the use of mass flow transducer. On-site well products transport through pump equipment and their delivery to oil loading riser. Gas treatment according with the spec standards. The use of associated gas to heat well products. Smoke-free combustion of associated gas at the flare unit. Real-time metering of oil products, water and gas for each consumer (combustion, consumption, own needs). Oil, water and gas samples analysis (water cut, oil density, chloride salt weight fraction, particles content, solid particles weight content, acid content). Each well production rate individual measurement (oil, water, gas).