WES Enhanced Oil Recovery Technologies
WES injects high temperature, high pressure steam, along with a tailored mix of injectants that can include flue gasses, CO2, and other production-enhancing injectants and processes, to thermally stimulate the reservoir for production improvements. Using these methods, WES changes the character of the formation by effectively improving permeability and porosity through a combination of physical and chemical processes.
Kerogen conversion to oil
Modest incremental oil produced
Kerogen pore space is violated
Improves porosity results
oil heating, swelling
Causes micro-shearing, micro-fracturing
Improved permeability results
Heating improves viscosity, drainage and flow
Surface tension reduction
Miscible displacement, dilation
pressurized steam and gas injection
Thermal fracturing
Hydraulic fracturing
Improved permeability results
WES’ processes to improve production profiles of both newly completed wells and producing, declining wells lie somewhere between a short-term stimulation activity like hydraulic fracturing, and a conventional EOR approach using sustained injection of water, or CO2 for the productive life of the field. Following the stimulation, near-term oil production is strongly enhanced and accelerated. Because of improved porosity and permeability, and lighter, less viscous oil, along with production- enhancing EOR gasses, moderate to long-term production is also enhanced. Improved porosity and permeability make the formation more amenable to conventional EOR techniques such as CO2 injection or waterflood injection (which otherwise could not be injected into tight plays), providing further recovery enhancement options.