Well gauging system and method

The well gauging system and method includes two containment vessels, a common inlet line to the vessels with divert control valves on each inlet line of the vessels being controlled by a programmable logic controller (PLC), a common outlet line to the vessels, a common gas line attached to the top of each vessel, which has low and high pressure regulators allowing control of the vessel's internal pressure, a vertical level indication device for controlling level in each vessel, a water cut meter used to report water cut of the production stream, a coriolis meter, valves, gas cylinder, a controller for process control of well testing, storing results, and sending results to a customer's central computer. The method of using two vessels allows more time for the emulsion to separate, thus increasing the accuracy of the oil, water, and gas measurements.