Using heat from produced fluids of oil and gas operations to produce energy

An apparatus for generating a heated working fluid that is capable of converting energy comprising:

• a) a gathering device capable of producing a heat containing fluid comprising one or more hydrocarbons wherein said heat-containing fluid comprises at least a substantially vapor phase and a substantially liquid phase;
• b) a separator operably connected to gathering device wherein said separator is capable of separating said substantially vapor phase from said substantially liquid phase;
• c) a vapor heat exchanger operably connected to the separator to accept the substantially vapor phase from the separator and exchange at least a portion of the heat contained in said substantially vapor phase to a working fluid thereby producing a heated working fluid capable of converting energy;
• d) a liquid heat exchanger operably connected to the separator to accept the substantially liquid phase from the separator and exchange at least a portion of the heat contained in said substantially liquid phase to a working fluid thereby producing a heated working fluid capable of converting energy;
• e) one or more pipes operably connected to the vapor heat exchanger, the liquid heat exchanger, or both to transfer the heated working fluid that is capable of converting energy to a source capable of using said energy.

An apparatus for generating a heated working fluid that is capable of converting energy comprising:

• a) a gathering device capable of producing a heat containing fluid comprising one or more hydrocarbons;
• b) one or more welded plate heat exchangers operably connected to the gathering device to accept the heat containing fluid and exchange at least a portion of the heat contained in said
• heat containing fluid to a useful energy source in a closed loop system;
• e) one or more links operably connected to the one or more heat exchangers to transfer the useful energy source to an apparatus or process in need of energy.