Patent ID: 8973658
Filing Date: 2015-03-10
Classification: E21B,F22D,Y10T

Abstract:
1. A system for recovering heat in wellpad Steam Assisted Gravity Drainage (SAGD) steam generation, comprising: wellpads; at least one steam generator located at or near the wellpads, wherein feedwater is supplied to the steam generator; a produced fluids line conveying produced fluids from the well pad to pad separators, the pad separators located on the wellpads, each of the pad separators having a produced gas line conveying produced gases from the pad separator gas outlet, a produced emulsion line conveying produced emulsion from the pad separator emulsion outlet, and a wellpad heat exchanger located on the wellpads connected to one or more lines on the wellpad wherein produced fluids, produced gases, or produced emulsion provide heat for the wellpad heat exchanger and wherein the feedwater is preheated at the wellpad heat exchanger by the produced fluids before the produced fluids enter the pad separators.