| 摘要 |
<p>A coal formation may be treated using an in situ thermal process. Heat may be applied to the formation to raise a temperature of a portion of the formation to a pyrolysis temperature. Heat input into the formation may be controlled to raise the temperature of portion at a selected rate during pyrolysis of hydrocarbons within the formation. A mixture of hydrocarbons, H2, and/or other formation fluids may be produced from the formation. The mixture may be separated into condensable hydrocarbons and non-condensable hydrocarbons. The condensable hydrocarbons removed from the formation may be a high quality oil that has a relatively low olefin content and a relatively high API gravity. Synthesis gas 1140 exiting production well 1142 may be supplied to catalytic methanation plant 1144. Methane 1146 may be produced by catalytic methanation plant 1144. Steam 1148 produced by plant 1144 my be supplied to injection well 1141 for production of synthesis gas.</p> |
