TECHNOLOGY FOCUS - CHEMICAL ENGINEERING - Preferred Method: The heat sources are installed by drilling openings using a steerable motor and accelerometer, geosteered drilling, or sonic drilling. The controlling step includes controlling, pressure, heat and/or heating rates of a selected section of formation. Heat is transferred by conduction to increase a permeability of the selected section to greater than 100 millidarcy. The produced mixture is separated into an aqueous stream and a non-aqueous stream. Synthesis gas generation is provided at 400-1200 (preferably 700) degrees C. The produced synthesis gas may be passed through a turbine or to a fuel cell to generate electricity. It may also be converted to methanol, gasoline or methane.Preferred Properties: The selected section has a thermal conductivity of 0.5 W/(m degrees C).Preferred Parameters: A heating energy/day provided to a volume of the section is at mostPwr, which is calculated by the equation: Pwr = hxVxcvxrhoB, where Pwr is the heating energy/day, h is an average heating rate of the formation and is less than 10 degrees C/day, and rhoB is formation bulk density.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Compositions: The produced mixture comprises condensable hydrocarbons and non-condensable hydrocarbons, both comprising 0.1-15 wt.% olefins. The condensable hydrocarbon comprises 5-30 wt.% oxygen containing compounds comprising phenols, 5-30 wt.% cycloalkanes, greater than 20 wt.% aromatic compounds, less than 5v wt.% multi-ring aromatics with more than two rings, less than 1 wt.% nitrogen, less than 1 wt.% oxygen, less than 1 wt.% sulfur, and/or less than 0.3 wt.% asphaltenes. The non-condensable hydrocarbons comprises hydrocarbons having carbon number less than 30, less than 25 or less than 5. A weight ratio of the hydrocarbons having carbon numbers 2-4 to methane is greater than approximately 1. The mixture may also comprise hydrogen, carbon dioxide, hydrogen sulfide, and/or greater than 0.05 wt.% ammonia. A mole ratio of ethene to ethane in the non-condensable hydrocarbons is 0.001-0.15. The ratio of H2 to carbon monoxide of the synthesis gas is 2:1.Preferred Properties: The condensable hydrocarbons have an American Petroleum Institute gravity of at least 25. The produced mixture comprises a partial pressure of H2 within the mixture greater than 0.5 bar.    TECHNOLOGY FOCUS - MECHANICAL ENGINEERING - Preferred Components: The heat source comprises electrical heater, surface burner, flameless distributed combustors, or natural distributed combustors. The unit of heat sources comprises a triangular pattern. The conductor provides approximately 650-1650 W/m heat. The formation is a deep hydrocarbon containing formation over 760 m below ground surface.    TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Components: The conductor comprises stainless steel. The synthesis gas generating fluid comprises liquid water or steam. It may comprise water and carbon dioxide removed from the formation.