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Abstract Heavy oil, oil < 17o API, accounts for a growing percentage of the production and reserve portfolios of North American Oil Producing Companies. A key challenge in the production of heavy oil is that its properties provide a greater likelihood of common damage mechanisms and result in a drop in production rates. Historically, operators of heavy oil reservoirs have used several options to address the common damage mechanisms of asphaltene, paraffin and inorganic scale depositions, as well as wettability changes in order to increase the production of their existing wells. However these options are generally limited to costly and resource consuming methods such as cyclic steam injection and workover rig based liner or perforation washes. A cost effective alternative production enhancement process to these types of well interventions has been implemented in the Midway Sunset heavy oil field (Kern County, California). This alternative production enhancement process is based on a combination of candidate selection practices and a unique blend of solvents, surfactants, and acid. To date 2,500+ individual well treatments have been performed in a field wide application of this technology. A 27% average increase in oil production rates was observed for the wells that were treated. On a well by well basis a 73% economic success rate was achieved with an overall project economic return of greater than 500% ROI. This process significantly reduces the reliance solely upon workover rigs and steam for stimulation purposes. Additionally production downtime is limited to twenty four to forty eight hours and repeat applications to maintain increased production are only required every 90-120 days. As with many tools and techniques in the oilfield, proper well selection and application directly affects the effectiveness of the tool or technology. The modifiable, multifunctional treatment fluid allows for the remediation of depositional damage mechanisms such as asphaltenes, paraffin, and inorganic scales and allows for wettability modification to restore the near-wellbore region to a water wet state.