Abstract: A separator and process for separating a mixture of oil, gas, and water, such as may be received from a hydrocarbon producing well. The separator is in the form of a vessel divided into separation chambers and provided with a dynamic separator device which progressively increases the droplet size of the oil and water of the mixture by flowing the mixture in a spiral, and thereafter flowing the mixture linearly, and thereafter flowing the mixture into the first of the separation chambers where the mixture impacts against an impact member, thereby partially separating the gas from the resultant oil and water mixture. The partially separated gas migrates to the upper end of the first chamber and is further stripped and flows out of a gas outlet. The residual liquid mixture descends into a lower chamber where the liquid separates into a water phase and an oil phase.