초록 ▼

A coal 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. Heat and pressure ap

A coal 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. Heat and pressure applied to the formation may be controlled so that a majority of the hydrocarbons produced from the formation have carbon numbers less than 25. Conditions may be controlled to produce low quantities of olefins in condensable hydrocarbons produced from the formation and low quantities of olefins in non-condensable hydrocarbons produced from the formation.

대표청구항 ▼

A coal 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. Heat and pressure ap

A coal 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. Heat and pressure applied to the formation may be controlled so that a majority of the hydrocarbons produced from the formation have carbon numbers less than 25. Conditions may be controlled to produce low quantities of olefins in condensable hydrocarbons produced from the formation and low quantities of olefins in non-condensable hydrocarbons produced from the formation. hamber and negative pressure is applied to said catheter. 11. The endotracheal suction catheter apparatus of claim 2, further comprising a heat and moisture exchanger having a receiving ridge engaged with said connection member and on said distal end. 12. An endotracheal suction catheter apparatus comprising: a catheter configured for removing fluids from a respiratory tract of a patient by applying negative pressure to a lumen of said catheter; a distal end configured to allow said catheter to be moved through said distal end and into the respiratory tract of a patient, said distal end having a cleaning chamber disposed therein; a flap disposed proximate to said cleaning chamber wherein when a distal tip of said catheter is in said cleaning chamber and negative pressure is applied to said catheter said flap is urge