In situ thermal processing of a hydrocarbon containing formation using a selected production well spacing

A method of treating a hydrocarbon containing formation in situ, comprising:

• providing heat to at least a portion of the formation from one or more first heaters placed in a pattern in the formation;
• allowing the heat to transfer from the one or more first heaters to a first section of the formation;
• heating a second section of the formation with at least one second heater, wherein the second section is located adjacent to the first section, and wherein at least the one second heater is configured to raise an average temperature of a portion of the second section to a higher temperature than an average temperature of the first section;
• and
• producing a mixture from the formation through a production well positioned in the second section.

A method of treating a hydrocarbon containing formation in situ, comprising:

• providing heat to at least a portion of the formation from one or more first heaters placed in a pattern in the formation;
• allowing the heat to transfer from the one or more first heaters to a first section of the formation;
• heating a second section of the formation with at least one second heater, wherein the second section is located adjacent to the first section, and wherein at least the one second heater is configured to raise an average temperature of a portion of the second section to a higher temperature than an average temperature of the first section;
• producing a mixture from the formation through a production well positioned within in the second section, wherein a majority of the produced mixture comprises non-condensable hydrocarbons and a non-condensable component comprising H2;
• and
• recirculating a portion of hydrogen from the mixture into the formation.