In situ thermal processing of a hydrocarbon containing formation leaving one or more selected unprocessed areas

摘要

A hydrocarbon containing formation may be treated using an in situ thermal process. A mixture of hydrocarbons, H2, and/or other formation fluids may be produced from the formation. Heat may be applied to the formation to raise a temperature of a portion of the formation to a pyrolysis temperature. An unpyrolyzed section may be left between two substantially pyrolyzed sections to inhibit subsidence of the formation.